annual report 2014 - Universiteit Twente

ANNUAL REPORT 2014

General Preface............................................................................................................................................................................ 7 About MESA+, in a nutshell.................................................................................................................................................... 8

MESA+ Annual Report 2014

MESA+ Strategic Research Orientations........................................................................................................................ 10

Knowledge and Technology Transfer............................................................................................................................. 17 The Nano-landscape.............................................................................................................................................................. 21

International Networks......................................................................................................................................................... 25 NanoLab facilities................................................................................................................................................................... 27

Education and MESA+........................................................................................................................................................... 29 Awards, honours and appointments................................................................................................................................ 32

Highlights AQO Adaptive Quantum Optics................................................. Prof.dr. Pepijn Pinkse.................................. 38 BES

Biomolecular Electronic Structure................................. Prof.dr. Claudia Filippi................................ 39

BIOS BIOS Lab-on-a-chip............................................................. Prof.dr.ir. Albert van den Berg................ 40 BMEL Bioinspired Molecular Engineering Laboratory........ Prof.dr.ir. Pascal Jonkheijm........................ 41 BNT CBP CFE

Biomolecular NanoTechnology....................................... Prof.dr. Jeroen Cornelissen....................... 42 Computational BioPhysics................................................. Prof.dr. Wim Briels....................................... 43 Capillary Flows & Elasticity............................................. Prof.dr.ir. Jacco Snoeijer............................ 44

CMS Computational Materials Science................................... Prof.dr. Paul Kelly........................................ 45 CNS

Control of Nanophotonic Scattering.............................. Prof.dr. Allard Mosk.................................... 46

COPS Complex Photonic Systems............................................... Prof.dr. Willem Vos...................................... 47

CPM Catalytic Processes and Materials................................. Prof.dr.ir. Leon Lefferts.............................. 48 FiF ICE

Films in Fluids...................................................................... Prof.dr.ir. Nieck Benes................................ 49 Interfaces and Correlated Electron systems............... Prof.dr.ir. Hans Hilgenkamp...................... 50

IHNC Inorganic & Hybrid Nanomaterials Chemistry........... Prof.dr.ir. André ten Elshof....................... 51 IM IMS

Inorganic Membranes........................................................ Prof.dr.ir. Arian Nijmeijer.......................... 52 Inorganic Materials Science............................................. Prof.dr.ing. Guus Rijnders......................... 53

LPNO Laser Physics and Nonlinear Optics............................. Prof.dr. Klaus Boller.................................... 54

MaCS Mathematics of Computational Science........................ Prof.dr.ir. Jaap van der Vegt..................... 55

MCS Mesoscale Chemical Systems.......................................... Prof.dr. Han Gardeniers............................. 56 MMS Multiscale Modeling and Simulation............................. Prof.dr.ir. Bernard Geurts.......................... 57

MnF

Molecular nanoFabrication............................................... Prof.dr.ir. Jurriaan Huskens...................... 58

MSM Multi Scale Mechanics....................................................... Prof.dr. Stefan Luding................................. 59 MST MTP

Membrane Science and Technology............................. Prof.dr.ir. Kitty Nijmeijer............................ 60

Materials Science and Technology of Polymers........ Prof.dr. Julius Vancso.................................. 61

NBP NanoBioPhysics.................................................................... Prof.dr. Mireille Claessens........................ 62

NE NanoElectronics................................................................... Prof.dr.ir. Wilfred van de Wiel................. 63 NI NanoIonics............................................................................. Prof.dr. Serge Lemay................................... 64 NLCA Nanofluidics for Lab on a Chip Applications.............. Prof.dr. Jan Eijkel.......................................... 65 OS PCF PCS

Optical Sciences................................................................... Prof.dr. Jennifer Herek................................ 66 Physics of Complex Fluids................................................ Prof.dr. Frieder Mugele...............................67 PhotoCatalytic Synthesis................................................... Prof.dr. Guido Mul........................................ 68

PGMF Physics of Granular Matter and Interstitial Fluids.... Prof.dr. Devaraj van der Meer................. 69 PIN

Physics of Interfaces and Nanomaterials.................... Prof.dr.ir. Harold Zandvliet........................ 70

PMA Physical and Medical Acoustics..................................... Prof.dr. Michel Versluis.............................. 71

PNM Physics of inorganic NanoMaterials.............................. Prof.dr.ir. Gertjan Koster............................ 72 PNS PoF PSP

Programmable NanoSystems........................................... Prof.dr.ir. Hajo Broersma........................... 73 Physics of Fluids.................................................................. Prof.dr. Detlef Lohse.....................................74 Philosophy of Science in Practice.................................. Prof.dr.ir. Mieke Boon................................. 75

QTM Quantum Transport in Matter.......................................... Prof.dr.ir. Alexander Brinkman.................76 SC SFI

Semiconductor Components............................................. Prof.dr. Jurriaan Schmitz........................... 77 Soft matter, Fluidics and Interfaces............................... Prof.dr. ir. Rob Lammertink...................... 78

ST PS Science, Technology and Policy Studies..................... Prof.dr. Stefan Kuhlmann.......................... 79 TST

Transducer Science and Technology............................ Prof.dr.ir. Gijs Krijnen................................. 80

XUV XUV Optics............................................................................. Prof.dr. Fred Bijkerk.................................... 81

Publications 2014 MESA+ Scientific Publications 2014................................................................................................................................ 84

about MESA+ MESA+ Governance Structure........................................................................................................................................ 110 Contact details....................................................................................................................................................................... 110

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[PREFACE]

MESA+ reflecting and inspiring Twente seconds science! Launched in 2014, the initiative “20 Seconds Science” encouraged MESA+ students and researchers to produce creative videos inspired by their research. Two research institutes hosted this initiative: MESA+ institute for Nanotechnology and MIRA institute for biomedical technology and technical medicine. The diversity of submitted videos showed the broad scope of research activities. Additionally, the videos reveal the variety of expected impact of our research on both economy and society. 2014 has been a year of new scientific breakthroughs, reinforced strategic collaboration with industry and academic partners, new infra­structure investments, and a new technical commercial director. Janneke Hoedemaekers was appointed as successor of Miriam Luizink, who is now leading the Strategic Business Development Initiative at the University of Twente. Also, 2014 was a year of self-reflection. A self-evaluation was performed preceding the planned institute assessment over the period 2008-2014. The previous assessment took place 8 years ago. 8 years of growth in every aspect and all numbers.
 With an average of 550 scientists working in the institute, including 44 professors and over 250 PhDs, MESA+ is a mature institute with strong international and national reputation. A time for self-evaluation and reflection immediately drives you to look forward. How do we respond to new challenges in nano­ techno­logy? How do we communicate our successes? How well does the governance structure fit the institute? The national research program NanoNextNL will run until end 2016. Now is the time to discuss (selective) continuation of these investments in research & innovation, people and infrastructure. At the same time, the connection with industry becomes more important: within the Dutch topsector policy and with (inter)national strategic partners. Commercialization of key enabling technologies and their contribution to societal challenges is crucial, which is also emphasized in European programmes like Horizon2020. In 2014, we organized strategic sessions with the academic staff to discuss how to be prepared for the next years. These outcomes, and the institute assessment (beginning 2015), will be implemented in strategic plans for the coming period. This annual report provides an overview of MESA+ current research activities and key achievements. By integrating research areas, attracting and encouraging talent, offering competitive state-of-the-art infrastructure, and pursuing active collaboration with industry and government, MESA+ continues to contribute to harvest the societal and economic potential of key enabling technologies like nanotechnology. Enjoy reading! Janneke Hoedemaekers MSc, Technical Commercial Director Prof. dr. ing. Dave H.A. Blank, Scientific Director, MESA+ Institute for Nanotechnology

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[RESEARCH] “MESA+ Institute for

Nanotechnology is one of the largest nanotechnology research institutes in the world”

About MESA+, in a nut shell MESA+ Institute for Nanotechnology is a leading nanotechnology research institute in the world, and it is the largest research institute in this field in the Netherlands. MESA+ is part of the University of Twente and combines both the research of individual research groups and industry-related activities, aiming for international leadership in its field. Today, the institute employs 578 people of whom approximately 300 PhDs and postdocs. With its NanoLab facilities the institute holds 1250 m2 of cleanroom space and state of the art research research equipment. MESA+ integrates the disciplines of physics, electrical engineering, chemistry, mathematics, social sciences, and humanities in the area of nanotechnology and their applications at the University of Twente. Currently, 36 research groups participate in MESA+. MESA+ has an integral turnover of about 50 million euro per year of which around 60% is acquired in competition from external resources. The MESA+ operational and governance structure supports and facilitates researchers, and actively stimulates collaboration. MESA+ has a solid track record of uniting scientific disciplines and initiating and promoting strategic national and international cooperation. These are crucial conditions for excelling in science and education, and for successful knowledge and technology transfer. MESA+ introduced Strategic Research Orientations, headed by a scientific researcher, that bridge the research topics of a number of research groups working in common interest fields. The SROs’ research topics are an addition to the research topics of the chairs. Their task is to develop these interdisciplinary research areas, which could result in new independent chairs. Internationally attractive research is achieved through this multidisciplinary approach. MESA+ has been the breeding ground for more than 50 MESA+ high-tech start-ups to date. A targeted program for cooperation with small and medium-sized enterprises has been specially created for start-ups. MESA+ offers the use of its extensive NanoLab facilities and cleanroom space under hospitable conditions. Start-ups and MESA+ work together intensively to promote the transfer of knowledge. MESA+ has created a perfect habitat for start-ups in the micro and nano-industry to establish and to mature. MESA+ is a Research School, designated by the Royal Dutch Academy of Science. All MESA+ PhD’s are member of the MESA+ School for Nanotechnology, part of the Twente Graduate School.

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[RESEARCH] Mission and strategy MESA+ conducts research in the strongly multidisciplinary field of nanotechnology and nanoscience. MESA+ mission: n Excel in Research Area through collaboration; n Contribute to global Societal Challenges, for instance energy and health; n Excel in innovative and successful Knowledge and Technology Transfer; n Provide competitive open-access infrastructure; n Provide excellent education and career development opportunities. MESA+ has defined the following key performance indicators for achieving its mission: n publish in high ranked journals; n 1:1 balance between university funding and externally acquired funds; n scalable spin-off activities. MESA+ focuses on three issues to pursue its mission: n to create a top environment for international scientific talent; n to create strong multidisciplinary cohesion within the institute; n to be a national leader and international key player in nanotechnology.

Organizational structure University Board

Scientific Advisory Board

Governing Board

Scientific Director/ Technical Commercial Director Management Support

NanoLab

Advisory Board: • Strategic Research Orientations • Research Groups

MESA+ is an institute of the University of Twente and falls under the responsibility of the board of the university. The scientific advisory board assists the MESA+ management in matters concerning the research conducted at the institute and gives feedback on the scientific results of MESA+. The governing board advises the MESA+ management in organizational matters. The scientific director accepts responsibility for the institute and the scientific output. The managing director is responsible for commercialization, central laboratories, finance, communications and the internal organization. The participating research groups and SRO program directors form the MESA+ advisory board.

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[strategic RESEARCH orientations] Prof. dr. Pepijn W.H. Pinkse:

NanoPhotonics: seeing tomorrow in a new light" "Applied

Applied NanoPhotonics Optics has revolutionized fields as various as data storage and long-distance communication. Optical systems are likely to become ubiquitous in other areas, like today’s smart devices, but this step requires further miniaturization. The example of electronics shows us that miniaturization will sooner or later hit physical limitations. In the case of optics this will be in the nanodomain. Working with optics on this scale requires new concepts to be developed and many questions to be answered: How can we shrink the dimensions of optical structures to, or even below, the wavelength? To what extend can we nanostructure waveguides, beam splitters, antennas and resonators to make the optical equivalent of electronic integrated circuits? How can we miniaturize lasers and increase their yield? How can one make high-sensitivity optical detectors, e.g. for medical applications, and integrate them in low-cost labs on a chip? Can we use nanophotonics to study complex (molecular) systems and can we tailor light to efficiently steer their behavior? Can we improve existing imaging systems or construct entirely new ones by cleverly taking the scattering of light on nanometer sized scatterers into account? And on the more fundamental side: Can single emitters be controlled efficiently and embedded into nanophotonic structures? How can we exploit the quantum character of light for new functionality? The goal of our Strategic Research Orientation Applied Nanophotonics (ANP) is to address these and related questions by exploiting the expertise in MESA+ groups. Therefore, ANP fosters new research and develops new expertise in a few key areas. ANP scientists meet on a monthly basis in ANP meetings to lively debate the latest nanophotonic developments. By means of these ANP group meetings, ANP colloquia and workshops (see picture), ANP stimulates cooperation between the research

HIGHLIGHTED PUBLICATIONS: [1] Y. Fan [LPNO], R.M. Oldenbeuving, M.R.H. Khan, C.G.H. Roeloffzen, E. Klein, C.J. Lee [XUV], H.L. Offerhaus [OS], K.J. Boller [LPNO], Q-factor measurements through injection locking of a semiconductor-glass hybrid laser with unknown intracavity losses, Opt. Lett. 39 (2014) 1748.

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[2] S.A. Goorden [COPS], M. Horstmann [COPS & LPNO], A.P. Mosk [COPS], B. Škoric, ´ P.W.H. Pinkse [COPS], Quantum-secure authentication of a physical

[strategic RESEARCH orientations]

groups at MESA+ that have a strong optics focus, including COPS, LPNO, MaCS, NBP, OS & XUV, as evidenced by our joint publications. In ANP, the light of tomorrow is developed today! Program director: Prof. dr. P.W.H. Pinkse, phone +31 53 489 5904, [email protected], www.utwente.nl/mesaplus/nanophotonics

ANP scientists and guests on the annual workshop in June 2014 in Tecklenburg (Germany).

unclonable key, Optica 1 (2014) 421-424. [3] S.R. Huisman [COPS & OS], T.J. Huisman [COPS], S.A. Goorden [COPS], A.P. Mosk [COPS], P.W.H. Pinkse [COPS], Programming balanced optical beam splitters in white paint, Opt. Express 22 (2014) 8320-8332. [4] T.L. Chen [OS], D.J. Dikken [OS], J.C. Prangsma [NBP & OS], F. Segerink [OS], J.L. Herek [OS], Characterization of Sierpinski carpet optical antenna at visible and near-infrared wavelengths, New J. Phys. 16 (20014) 093024.

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[strategic RESEARCH orientations] Dr. ir. Séverine Le Gac:

"Nanotechnology is to play a decisive role in this revolution in the field of medicine”

Nanomedicine While populations are generally ageing and life expectancy continues to increase in developed countries, healthcare is facing new challenges. New classes of diseases related to ageing must be addressed, and tissue/organ failure is becoming more recurrent. Subsequently, a new paradigm of “healthy ageing” has been identified as a priority by the EU. This paradigm includes development of policies towards more effective disease prevention as well as fundamental studies to understand biological factors playing a key-role in disease onset. Next, novel approaches must be developed for early disease detection, personalized treatment, and tissue repair. Finally, the healthcare system must become more competitive, and drastically reduce its overall expenses. Nanotechnology is to play a decisive role in this revolution in the field of medicine. Nanoparticles and nanodrugs allow targeted and localized treatment and imaging. Nanosensors hold great promises for early disease detection and the development of point-of-care and home therapy monitoring devices. Nanostructured materials are drawing much interest for regenerative medicine. Finally, nanometer-sized tools are taking prominent places in the investigation of molecular processes, allowing for more insightful understanding of what causes a disease. The goal of this Strategic Research Orientation (SRO) Nanomedicine is to explore the potential of micro- and nanotechnology to develop innovative strategies to solve the aforementioned issues linked to ageing of society. To foster multidisciplinary research, the SRO Nanomedicine further works to strengthen collaborations within MESA+, as well as with research groups at the MIRA and IGS Institutes at the University of Twente, through the organization of monthly meetings.

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[strategic RESEARCH orientations]

In vitro development of human embryos in a microfluidic platform: a randomized controlled trial In 2013, MESA+ researchers together with colleagues at the Max-Planck Institute for Molecular Biomedicine and CeRA (Center for Reproductive Medicine and Andrology) in Muenster (Germany) demonstrated the net advantage of a confined and highly controlled environment, as found in microfluidic devices, for the pre-implantation culture of individual mouse embryos leading to viable full-term development (Esteves et al, 2013, RSC Adv.). After this first stage validation on an animal model, the performance of the proposed microfluidic culture platform was assessed on human embryos for its eventual application in a clinical setting for IVF treatments. For that purpose, a randomized clinical trial was performed in collaboration with the VUMC (Amsterdam) using donated human embryos that were already at day 4 of their development. In total, 120 human embryos were included, cultured individually either in a microfluidic platform or using droplets of medium (control) for 72 h, and graded at different time points. As for the animal model, microfluidics was found to support the in vitro development of human embryos, but here equal development rates and similar embryo quality were recorded for both platforms (Kieslinger et al., 2015, Fertil. Steril.). Future studies are therefore required using earlier stage human embryos, who have not been yet through important steps of their development, to clarify whether a confined and microfluidic culture environment can benefit human embryos as observed with their mouse counterparts. Furthermore, the microfluidic platform will be upgraded for parallel culture of single embryos, medium refreshment, and implementation of built-in sensors for in situ embryo scoring. Program director: Dr. ir. Séverine Le Gac, phone +31 53 489 2722, [email protected], www.utwente.nl/mesaplus/nanomedicine

HIGHLIGHTED PUBLICATIONS: [1] T.C. Esteves, F. van Rossem, V. Nordhoff, S. Schlatt, M. Boiani, S. Le Gac, Microfluidic system supports single mouse embryo culture leading to full-term development, RSC Adv., 3 (2013) 26451-26458. [2] D.C. Kieslinger, Z. Hao, C.G. Vergouw, E.H. Kostelijk, C.B. Lambalk, S. Le Gac, In vitro development of donated frozen-thawed human embryos in a prototype static microfluidic device: a randomized controlled trial, Fertil. Steril., 103 (2015) 680-686.

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[strategic RESEARCH orientations] Dr. ir. Mark Huijben:

Breakthroughs in energy

applications can only be accomplished by creation of novel materials on the nano scale”

NanoMaterials for Energy The worldwide energy demand is continuously growing and it becomes clear that future energy supply can only be guaranteed through increased use of renewable energy sources. With energy recovery through renewable sources like sun, wind, water, tides, geothermal or biomass the global energy demand could be met many times over; currently however it is still inefficient and too expensive in many cases to take over significant parts of the energy supply. Innovation and increases in efficiency in conjunction with a general reduction of energy consumption are urgently needed. Nanotechnology exhibits the unique potential for decisive technological breakthroughs in the energy sector, thus making substantial contributions to sustainable energy supply. The goal of the Strategic Research Orientation (SRO) NanoMaterials for Energy is to exploit and expand the present expertise of the MESA+ groups in the field of nano-related energy research. Through multidisciplinary collaboration between various research groups new materials with novel advanced properties will be developed in which the functionality is controlled by the nanoscale structures leading to improved energy applications. The range of new research projects for nano-applications in the energy sector comprises gradual short and medium-term improvements for a more efficient use of conventional and renewable energy sources as well as completely new long-term approaches for energy recovery and utilization.

Energy harvesting from waste heat by thermoelectric conversion Thermoelectric energy conversion is currently gaining interest because of the potential to convert waste heat into electrical energy. However, the search for new and improved materials remains the key factor for enhancement of the overall efficiency of this conversion process. Engineering of improved thermoelectric materials is challenging because of the direct interplay between the relevant material properties. To improve the overall thermoelectric performance of a material, the electrical conductivity and Seebeck coefficient have to be increased, whereas the thermal conductivity should simultaneously be suppressed. Among a wide

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[strategic RESEARCH orientations]

variety of thermoelectric materials, oxides are studied as promising candidate materials because of their good thermal and chemical stability, making them ideal for high-temperature applications. Among the most promising materials for high-temperature applications are the layered cobaltites, such as Na xCoO2, due to the high temperature stability of complex oxide materials. We have shown that by structural engineering in chemically stable Na xCoO2 thin films the thermoelectric properties can be controlled and enhanced as compared to bulk samples. By changing the single crystalline substrate material we can control the structural properties and as a consequence the electronic and thermal properties of the thermoelectric thin films. Tuning of the grain size within the Na xCoO2 thin films significantly influences the achievable Seebeck coefficient. We demonstrated that preservation of the crystallinity in these thin films with enhanced Seebeck coefficient results in minimal reduction of the electrical conductivity and, therefore, leads to a doubling of the thermoelectric power factor at room temperature. Program director: Dr. ir. Mark Huijben, phone +31 53 489 4710, [email protected], www.utwente.nl/mesaplus/nme

Figure: X-ray Photoelectron Diffraction (XPD) oxygen 1s intensity maps of NaxCoO2 thin films deposited on Al 2O 3, LaAlO 3 and LSAT single crystal substrates. Schematic representation of the in-plane ordering of the crystal structure of NaxCoO2 thin film on the specific substrate. The substrate and film structures are shown in black and red.

HIGHLIGHTED PUBLICATIONS: [1] P. Brinks, B. Kuiper, E. Breckenfeld, G. Koster, L.W. Martin, G. Rijnders, M. Huijben, Enhanced Thermoelectric Power Factor of NaxCoO2 Thin Films by Structural Engineering, Advanced Energy Materials 4 (2014) 1301927. [2] P. Brinks, G. Rijnders, M. Huijben, Size effects on thermoelectric behavior of ultrathin NaxCoO2 films, Applied Physics Letters 105 (2014) 193902.

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Impression of MESA+ meeting

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[Knowledge and Technology Transfer]

Knowledge and Technology Transfer Nanotechnology offers opportunities for technologies in a wide range of application domains. MESA+ researchers collaborate effectively with complementary academic and industrial partners. For instance in public-private partnerships and research programs, like NanoNextNL and the Dutch Topsector High Tech Systems and Materials. Stimulated by a dynamic entrepreneurial environment, nuclei of spin-off companies arise. The number of new businesses based on nanotechnology is growing rapidly. MESA+ plays an important role nationwide, being at the start of more than 50 spin-offs. Access to state-of-the-art nanotech infrastructure, shared facilities functioning in an open innovation model, is of crucial importance for both creation and further development of spin-off companies. These spin-off companies are important for the national and regional economy; SMEs will become increasingly important for employment and turnover. MESA+ intensifies and strengthens its commercialization activities to further increase the number of patents, the number and size of spin-offs and, consequently, its national and international position. MESA+ is active in several commercialization projects and networks like MinacNed (national) and MANCEF (international).

MESA+ Knowledge and Technology Transfer policy MESA+ promotes transfer of knowledge by collaboration with industry and encourages entrepreneurship. MESA+ has proven to be successful in this approach. The University of Twente implements an active IP policy through its Business Development team. Entrepreneurial researchers are supported to commercialize research results, for example by coaching and a workshop Early Business Development. With support of the university and the region, a perfect habitat has been created or start-ups in the micro- and nanoindustry to establish and to mature. Through the University of Twente’s Strategic Business Development (SBD) initiative, opportunities for cooperation with the business community are strengthened. One of the actions concerns an impulse for facilitating new PhD positions (“100 aio plan”), a co-funding action with industrial partners.

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[Knowledge and Technology Transfer]

High Tech Factory MESA+ established High Tech Factory, a shared production facility for products based on micro- and nanotechnology. High Tech Factory is designed to ensure that companies involved can concentrate on business operations and focus their energies on growth rather than on realizing basic production infrastructure required for achieving that growth. In 2014, 12 companies are located in High Tech Factory and use the production area of cleanrooms and labs, and offices.

High Tech Fund The technical infrastructure fund High Tech Fund offers a lease facility for companies in micro- and nanotechnology. Equipment is located in production facility High Tech Factory. The 9 M€ fund, supported by ministry of Economic Affairs, province of Overijssel and region of Twente, was launched in June 2010. In 2014, investments have been realized for the companies Mimetas and Satrax.

Kennispark Twente Commercialization of nanotechnology research is one of the very strong drivers of MESA+. As illustrated in the topics above, key aspects of the MESA+ agenda encompass business development, facility sharing, area development, and growth towards a production facility. With these key commercialization projects MESA+ contributes strongly to the Kennispark agenda and the provincial and regional innovation systems.

Outreach MESA+ is involved with a number of outreach activities. Researchers of MESA+ present yearly over 80 (popular) lectures on nanotechnology, including lectures at festivals. Since the opening of NanoLab over 3000 interested visitors have made a round trip through the laboratory. On regular basis there are special events for students from high school as well as basic schools. Each quarter MESA+ publishes a magazine for a broad audience.

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The Nano-landscape The Nano-landscape The Nano-landscape The Nano-landscape

The Nano-landscape

The Nano-landscape The

Nano-landscape

The Nano-landscape

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The Nano-landscape

[the nano-landscape]

The Nano-landscape Netherlands Nano Initiative The nanotechnology research area is comprehensive and still extending. The Netherlands continually makes decisions based on existing strengths complemented with arising opportunities, as is described in the NNI business plan ‘Towards a Sustainable Open Innovation Ecosystem’ (2009) in micro and nanotechnology. Generic themes in which the Netherlands excels are beyond Moore and nanoelectronics, nanomaterials, bionanotechnology and instrumentation. Application lies within the areas of water, energy, food, health and nanomedicine. These generic and application areas are covered by risk analyses and technology assessment of nanotechnology. NanoLabNL provides the infrastructure for the implementation of the NNI strategic research agenda. MESA+ is one of the lead partners of the Netherlands Nano Initiative (2009-2020).

NanoNextNL NanoNextNL is a 250 M€ innovation program that started in 2011. NanoNextNL, a collaboration of 120 partners, proposed to apply micro- and nanotechnologies to strengthen both the technology base and competitiveness of the high tech and materials industry and to apply them in support of a variety of societal needs in food, energy, healthcare, clean water and the societal risk of certain nanotechnologies. This National program was a selective continuation of NanoNed. The main economic and societal issues addressed in this initiative are: n the societal need for risk analysis of nanotechnology; n the need for new materials;
 n ageing society and healthcare cost;
 n more healthy food; n need for clean tech to reduce energy consumption, waste production and provide clean water; n advanced equipment to process and manufacture products that address these issues. NanoNextNL covers all relevant generic, application and social themes.

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[the nano-landscape]

MESA+ is initiator and one of the lead partners of NanoNextNL (2011-2016). Blank is chair of the executive board of NanoNextNL. Furthermore, researchers of MESA+ have been selected as Program Directors. MESA+ hosts a total of 42 PhDs participating in NanoNextNL. MESA+ Program Directors NanoNextNL: Prof.dr. Vinod Subramaniam Prof.dr.ir. Albert van den Berg Prof.dr.ing. Guus Rijnders
 Prof.dr. Serge Lemay Prof.dr. Arie Rip

Dutch Topsector Policy Within the Dutch Topsector innovation policy, nanotechnology is mostly present in the Topsector High Tech Systems and Materials (HTSM) and Chemistry. Since 2012, a specific Nanotechnology roadmap is hosted by the topsector HTSM. The roadmap, which is updated yearly, forms the basis for additional grants based on cash industrial investments. Examples of key Dutch industrial players in nanotechnology are Philips, NXP, ASML, DSM, Océ and FEI. Dave H.A. Blank is one of the four members of the board of HTSM, representing science.

3TU collaboration The three Dutch universities of technology (TU Delft, Eindhoven University of Technology and University of Twente) join forces to strengthen and pool their technical knowledge with the aim of "producing sufficient numbers of highly qualified engineers and technical designers, of conducting outstanding and socially relevant research of an international standard, and of promoting cooperation between research institutes and businesses.” (3TU.nl)


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International Networks International Networks International Networks International Networks International Networks

International Networks

International Networks International

International Networks

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Networks

International Networks

[International Networks]

International Networks (Inter)national position and collaborations MESA+ has a strong international position, numerous strategic collaborations, and is active in a variety networks and platforms. There are many and intensive collaborations between MESA+ research groups and national and international partners, resulting in – among others – a high number of joint publications. MESA+ has strategic collaborations with: NINT (Canada), Ohio State, Materials Science Nano Lab (US), Stanford, Geballe Lab of Advanced Materials (US), Berkeley, nanoscience lab Ramesh group (US), California NanoSystems Institute at UCLA (US), JNCASR (India), NIMS (Japan), University of Singapore, and the Chinese Academy of Science CAS, and in Europe with: Cambridge, IMEC, Karlsruhe, Munster, Aarhus, and Chalmers University.

Participation in EU programmes Between 2007 and 2013, MESA+ attracted ~30m€ from EU funding resources (Framework Programme 7), of which 19 m€ was achieved through individual grants by the European Research Council (ERC). MESA+ researchers participate in collaborative projects and in obtaining international individual grants. The EU office of the University of Twente advises on international collaboration and covers the full width of Horizon2020: Excellent Science, Industrial Leadership, and Societal Challenges. MESA+ is active member of the High Level Group Nanoscience and Nanotechnology.

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NanoLab facilities NanoLab facilities NanoLab facilities NanoLab facilities NanoLab facilities

NanoLab facilities

NanoLab facilities

NanoLab facilities

NanoLab facilities

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NanoLab facilities

NanoLab facilities

[nanolab facilities]

NanoLab facilities MESA+ NanoLab MESA+ NanoLab has extensive laboratory facilities at its disposal, offering a wide spectrum of opportunities for researchers in the Netherlands and abroad: n 1250 m2 fully equipped cleanroom, with a focus on microsystems technology, nanotechnology, CMOS and materials and process engineering;
 n a fully equipped central materials analysis laboratory;
 n a number of specialized laboratories for chemical synthesis and analysis, materials research and analysis, and device characterization. In 2010-2013 MESA+ has invested largely in realizing its new BioNanoLab, part of the MESA+ NanoLab, for research in bio­nano­ technology, nanomedicine and risk analysis.
The MESA+ NanoLab facilities play a crucial role in the research programs and in collaborations with industry. MESA+ has a strong relationship with industry, both through joint research projects with the larger multinational companies, and through a commercialization policy focused on small and medium sized enterprises. The total number of users at MESA+ NanoLab (incl. BioNanoLab) is 500 people (2013), who together use the facilities for about 28,000 hours per year. The turnover related to industrial users is about 40%. The central research facilities NanoLab are headed by ing. Gerard Roelofs. NanoLab has approximately 21 full-time-equivalent technician positions. The MESA+ Nanolab is part of national foundation NanoLabNL.

NanoLabNL NanoLabNL is listed on the ’The Netherlands’ Roadmap for Large-Scale Research Facilities’ as one of 29 large-scale research facilities whose construction or operation is important for the robustness and innovativeness of the Dutch science system. NanoLabNL provides access to a coherent, high-level, state-of-the-art infrastructure for nanotechnology research and innovation in the Netherlands. The NanoLab facilities are open to researchers from universities as well as employees from companies. Nano­LabNL seeks to bring about coherence in national infrastructure, access, and tariff structure. Since its establishment in 2004 the NanoLabNL partners invested about 110 M€ in nanotech facilities through their own funding and additional public funding. The partners in NanoLabNL are:
 n Twente: MESA+ Institute of Nanotechnology at University of Twente;
 n Delft: Kavli Institute of Nanoscience at Delft University of Technology and TNO Science & Industry;
 n Groningen: Zernike Institute for Advanced Materials at Groningen University;
 n Eindhoven, Technical University Eindhoven and Philips Research Laboratories (associate partner).
 Together, these four locations cover most of the country and offer the widest possible spectrum of nanotechnology facilities for researchers in the Netherlands to use. The 3 Dutch technical universities (3TU) are involved. MESA+ is initiator of national roadmap plans (2010-2020) for continuation and strengthening of the national nanotechnology facility NanoLabNL. MESA+ is lead partner for the national investment program for infrastructure for bionanotechnology, nanomedicine and risk analysis (2009-2014), and lead partner for the national investment program for infrastructure for quantum, materials and energy (QUEEN, 2014-2018). MESA+ is founder of the NanoLabNL foundation and chair (Prof.dr.ing. Guus Rijnders) of the board of NanoLabNL.

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[Education and MESA+]

Education and MESA+ Access to the best students worldwide is a requirement for success. MESA+ students cover a wide variety of nationalities and disciplinary backgrounds. In 2014, 69 PhDs graduated at MESA+.

Twente Graduate School/ MESA+ School for Nanotechnology MESA+ is a research school, designated by the Royal Dutch Academy of Science that was recognized by the Dutch Science Foundation in 2012. All PhD students are member of the MESA+ School for Nanotechnology, which is part of the University of Twente’s “Twente Graduate School” (TGS). The Graduate School is aiming to strengthen education and improve the skills of PhD students.

Education at University of Twente Within the University of Twente, MESA+ researchers are involved in various courses and educational programs, providing skills for nanotechnology research and development. Primarily, MESA+ related education is offered by the faculties Science & Technology (S&T) and Electrical Engineering, Mathematics, and Computer Science (EEMCS). MESA+ provides information to students of MSc (and Bsc) programs, and brings relevant programs to the attention of its international cooperation partners. A masters degree of these programs below offers access to a PhD trajectory in a MESA+ research group. The main BSc and MSc educational programs that are embedded in MESA+ research are:

Educational program

Faculty

BSc (3yrs)

Advanced Technology

S&T

V

MSc (2yrs)

Applied Physics

S&T

V

V

Chemical Engineering

S&T

V

V

Electrical Engineering

EEMCS

V

V

Nanotechnology

S&T

V

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[Education and MESA+]

Master of Science Nanotechnology In 2005, the master track nanotechnology was established. It was the first accredited master’s program at the University of Twente. The master Nanotechnology is incorporated into the MESA+ School for Nanotechnology. Since 2005, in total 56 students have received their master degree in Nanotechnology. In 2014, 11 new students enrolled, of which 6 students from abroad. About 70% of NT graduates continued with a PhD. MESA+ is involved in increasing the amount of new students in the master program, through international marketing activities as well as improving the connection with the BSc program Advanced Technology. In 2013, an international external committee has reviewed the master and accreditation for the new period has been guaranteed. The committee wrote on the program and its relation to MESA+: “The programme succeeds in offering a varied and challenging set of courses, reflecting the focus areas of research institutes MESA+ and (to a lesser extent) MIRA. The committee is aware of the fact that the range and the level of the courses are very much determined by the research groups that participate in the programme. The presence of internationally renowned research groups ensures that students are able to benefit from excellent research expertise. In this respect, the committee is also enthusiastic about the fact that students can participate in activities organized by MESA+, such as the Workshop Fundamentals of Nanotechnology, the MESA+ colloquia and the Annual Meeting.” (Accreditation report MSc NT)

Fundamentals of Nanotechnology Since Nanotechnology is a multidisciplinary research field, it requires expertise from the field of electrical engineering, applied physics, chemical technology and life sciences. The course ‘Fundamentals of Nanotechnology’ is annually organized by MESA+ and provides an initial introduction to the complete scope of what nanotechnology is about. The course is set up for graduate students, postdoctoral fellows and students in the MSc Nanotechnology that are starting to work, or are currently working, in the field of nanotechnology. The workshop is given in an intensive one-week format; participants attend about 20 lectures and lab tours on different subfields of nanotechnology. Each year about 25 students participate.

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Awards, honours and appointments

Dr. Chao Sun

VIDI awards

Professor De Winter award

Dr. Chao Sun of the Physics of Fluids group, dr. Anthony Thornton of the Multiscale

Dr. Severine Le Gac, program director of the SRO Nanomedicine has received

Mechanics group and dr.ir. Mark Huijben of the Inorganic Materials Sciences

The Professor De Winter Award for female top talent for her article ‘A micro­fluidic

group and program director of the SRO NanoMaterials for Energy have received

system supports single mouse embryo culture leading to full-term development’

a VIDI grant from NWO, the Netherlands Organization for Scientific Research.

that has been published in the scientific journal Royal Society of Chemistry

This grant of up to 0.8 M€ is earmarked for talented researchers, giving them

Advances/ RSC Advances. The award consists of € 2,500 and a certificate.

the opportunity to develop their own line of research and to create their own research team. Sun's research is concerned with the reduction of friction caused

Beller Lectureship award

by turbulence, Huijben is carrying out research into the spontaneous formation

Prof.dr.ir. Bene Poelsema of the Physics of Interfaces and Nanomaterials group

of complex batteries and Thornton is examining granular segregation.

received the prestigious Beller Lectureship award for his contribution to surface

VENI award

Dr. Anthony Thornton

Dr.ir. Mark Huijben

Dr.ir. Mathieu Odijk of the BIOS Lab-on-a-chip group has received a VENI

David A. Karnofsky Memorial award

Award from The Netherlands Organisation for Scientific Research (NWO) for

The US organization ASCO has granted the David A. Karnofsky Memorial Award

the research project ‘Microprobe for more accurate measurements in the brain’.

2014 to prof.dr. Bob Pinedo, affiliated with MESA+ as part-time professor at

The 0.25 M€ grant is part of NWO’s Innovational Research (Vernieuwingsimpuls)

the BIOS Lab-on-a-chip group. Pinedo is honoured for, among other things,

program and is awarded to excellent recent PhD graduates to develop research

important discoveries within the biology of cancer and the effect of medication

ideas over a three-year period.

on patients.

ERC Proof of Concept grants

FOM Grant

Prof.dr.ir. Pascal Jonkheijm of the Molecular NanoFabrication group and Prof.

In a joint initiative of the universities of Delft, Nijmegen, Groningen and the

dr.ir. Wilfred van der Wiel of the NanoElectronics group both gained an ERC

University of Twente, headed by prof.dr.ir. Harold Zandvliet, the Physical of

Proof of Concept grant of 0.15 M€ from the new European Horizon 2020 funding

Interfaces and Nanomaterials group received a FOM grant of 1.6 M€ to realize,

program. Jonkheijm can use this grant to test a new coating developed by him

study and understand two-dimensional semiconductor structures made from

for implants like heart valves. Van der Wiel will use it to develop nanoelectronic

silicon, germanium of phosphor, in order to ultimately produce a field-effect

biosensors for early-stage detection of cancer.

transistor.

FOM Valorization award

FOM-Industrial Partnership Programme (IPP)

The prestigious “Valorization Award 2014” of the Dutch FOM Foundation of 0.25

In an IPP, fundamental research is carried out over a period of several years

M€ has been awarded to prof.dr.ing. Dave H.A. Blank (scientific director of

in close contact with industrial researchers in areas with a good potential for

MESA+) and prof.dr.ing. Guus Rijnders of the Inorganic Materials Science group

innovation and challenging scientific questions. It is therefore collaborative

for successfully building bridges between various scientific disciplines, between

research that could deliver groundbreaking innovations.

science and business and between science and society.

MESA+ received two FOM IPP programmes:

Descartes-Huygens award

Dr.ir. Mathieu Odijk

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physics.

• FOM-NWO-Shell program on Computational Science (2014-2018): Prof.dr. Detlef Lohse (PoF group) has received 266 K€ for the program Solar steam

Prof.dr. Willem Vos of the Complex Photonic Systems chair was awarded the

nanobubbles regarding solar energy conversion. The program will study the

Descartes-Huygens Prize by the French Academy of Sciences. He has been

underlying physics of a newly discovered phenomenon of direct conversion of

granted the award for his excellent research and his contributions to the French-

sunlight into steam by combining molecular dynamics simulations and level

Dutch collaboration. The award worth € 23,000 is intended for a stay as guest

set methods for vapor bubbles.

researcher in France and to foster Franco-Dutch collaborations.

• FOM-IPP program Heat, Mass Transport and Phase Transition in Dense Bubbly

Flows (2014- 2019). With this program, Prof.dr. Detlef Lohse (PoF group) has

M€ from the STW Technology Foundation. The grant is intended to translate

received 1.758 M€ together with Shell, Akzo, Tata Steel, Sabic and DSM. The

research results into a demonstration model. This model represents an important

objective of the proposed programme is to study the fundamentals of heat

first step in bringing the technology to market. Pinkse and Mosk are receiving

& mass transport and phase transitions in dense bubbly flows, inspired by

the grant to demonstrate that an uncrackable security system that they have

questions from the industrial practice, through a concerted action of three

developed also works well in practice.

groups with a considerable expertise in the study of multiphase flows, with the aid of experimental, theoretical, and numerical techniques.

‘Projectruimte’ funding

BP Investment In the next five years, BP will invest 2 M€ in fundamental research by the department of Physics of Complex Fluids. The purpose of the research is to obtain

Prof.dr.ir. Wilfred van der Wiel of the NanoElectronics group has been

a better understanding of how oil is attached to the porous bedrock of an oil field

awarded 'Projectruimte' funding to the amount of 0.4 M€ by the Foundation for

at the molecular level. Application of this knowledge ought to make it possible to

Fundamental Research on Matter (FOM) to conduct his new research project. The

extract increased quantities of oil from existing fields.

'Projectruimte' funds small-scale projects in fundamental research that have an innovative character and a demonstrable scientific, industrial or societal urgency.

NanoLabNL Project QuEEn

Van der Wiel will make use of the funding to conduct his research on unraveling

As part of the Dutch large scale infrastructure, NanoLabNL (consortium of 3TU,

the spin dynamics responsible for the extremely high magnetoresistance (MR) in

University of Groningen and TNO (Nether­lands Organisation for Applied Scientific

one-dimensional molecular wires.

Research)) received 17 M€ for the program Quantum Electrical Engineering.

NWO-CW New Chemical Innovations program

Russian grant

Prof.dr. Detlef Lohse (PoF group)/Prof.dr.ir. Harold Zandvliet (PIN group) together

Dr. Alexander Golubov of the Interfaces and Correlated Electron Systems group

with Prof.dr.ir. Bert Weckhuyzen (University of Utrecht) have received 1.05

received a grant of 2.5 M€ by the Russian government for building a new

M€ for the program Unravelling the mystery of solar steam nanobubbles. The

laboratory at the Moscow Institute of Physics and Technology.

project aims to understand the chemistry and physics of the phenomenon of solar steam nanobubble creation and growth, in order to optimize this process

FOM Physics Thesis Prize 2014

for various technologically extremely relevant and topical applications, including

The 2014 FOM Physics Thesis Prize has been won by dr. Hanneke Gelderblom.

process technology, solar fuels generation, and medicine. By bringing together

She receives this prize worth € 10,000 for her thesis entitled 'Fluid flow in drying

the expertise described, this project will put the Netherlands knowledge

drops' with which she gained her doctorate with distinction from the University

infrastructure in a leading role for further development of this most exciting

of Twente. Her supervisors were prof.dr. Detlef Lohse and prof.dr. Jacco Snoeijer

new field.

of the Physics of Fluids group.

STW HTSM grants

2014 Milton van Dyke Award

Dr. Alexey Kovalgin and Prof.dr. Jurriaan Schmitz received two grants from

The video ‘Laser impact on a drop’ of Physics of Fluids members Alexander

the Dutch Technology Foundation STW HTSM program. One project deals with

Klein, Claas Willem Visser, Wilco Bouwhuis, Henri Lhuissier, Chao Sun, Jacco

the lifetime of Bragg mirrors for extreme ultraviolet mirrors, a study in close

Snoeijer, Emmanuel Villermaux, Detlef Lohse and Hanneke Gelderblom) has won

collaboration with ASML and several other companies. The second involves the

a 2014 Milton van Dyke Award from the American Physical Society’s Division of

growth of two-dimensional semiconductors, and is carried out with the group

Fluid Dynamics.

NanoElectronics and several industrial partners. The total amount involved is 1.2 M€.

STW Demonstrator Start-up funding

Prof.dr.ir. Pascal Jonkheijm

Prof.dr.ing. Guus Rijnders [left] and prof.dr.ing. Dave H.A. Blank

Prof.dr. Willem Vos

Nature image of the year 2014 The picture ‘Drop everything’ which shows picolitre-sized silicone-oil droplets snapped by researchers of the Physics of Fluids group has been elected as one of

Prof.dr. Pepijn Pinkse (program director SRO Applied Nano­Photonics) and prof.dr.

the Nature Images of the year 2014. Lighting up the droplets with 8-nanosecond-

Allard Mosk (both Complex Photonic Systems group), together with a colleague

long laser-induced fluorescence light pulses, the team took images 600 nano­

from the TU/e, have received Demonstrator start-up funding to the value of 0.14

seconds apart to capture how the falling droplets formed.

Nature image of the year 2014

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New FOM group at ASML

nanocapacitor arrays’. Second prize (€ 500) was for Shrikrishnan Sankaran

FOM and ASML have signed a collaboration agreement for a new FOM research

(Molecular NanoFabrication group) for his poster ‘Supramolecular Bacterial

group in the field of fluid dynamics, located at ASML in Veldhoven. The group

Systems’ and third prize (€ 250) was awarded to Qing Pan (Optical Sciences

will focus on the behaviour of small tin droplets, which emit extreme UV light

group) for the poster ‘Ultrafast Optical Sciences: real-time detection of light-

(EUV) under the influence of laser light. ASML uses the tin droplets for EUV

induced processes in materials for energy’.

lithography, a technique used in the production of computer chips. The new group is associated with the Physics of Fluids group of prof.dr. Detlef Lohse at

Appointments

the University of Twente and consists of group leader dr. Hanneke Gelderblom

n P rof.dr.ir. Albert van den Berg (BIOS Lab-on-a-chip group) has been

(former PhD at the PoF group) and three PhD students. Dr. Hanneke Gelderblom

CSER program

Research Institute for Biomedical Techno­logy and Technical Medicine from May 1, 2014.

The Computational Sciences for Energy Research (CSER) program that is funded

n I r. Miriam Luizink (former technical commercial director of MESA+) has

by Royal Dutch Shell, and administered by FOM, has granted a new project to

been appointed Director Strategic Business Development of the University

the MESA+ groups Mathematics of Computational Systems and Complex Photonic Systems. The project aims to obtain a breakthrough in the 3D modeling of the absorption of interfering light in solar cells.

Cum laude distinctions To obtain a cum-laude distinction at the University of Twente the thesis has to belong to the top 5%, including a very successful defense. In 2014 the following PhDs received this distinction: n D r. Sander Huisman (Physics of Fluids group) for his thesis ‘Taylor-Couette turbulence’.

of Twente. n Janneke Hoedemaekers MSc. has been appointed as the new technical commercial director of MESA+ and director High Tech Fund from 1 August 2014. n P rof.dr.ing. Guus Rijnders (Inorganic Materials Science group) has been appointed as chair of NanoLabNL foundation from 1 July 2014. n P rof.dr. Willem Vos (Complex Photonics Systems chair) has been elected a Fellow of the American Physical Society. n D r.ir. Roy Kolkman, business development MESA+, has been appointed as director High Tech Factory.

n D r. David Vermaas (Membrane Science & Technology group) for his thesis

n F rom April 1, 2014 prof.dr. Allard Mosk of the Complex Photonic Systems chair

‘Energy generation from mixing salt water and fresh water: Smart flow

has been appointed Professor in the research field Control of nanophotonic

strategies for reverse electrodialysis’.

Scattering.

n D r. Sven Krabbenborg (Molecular NanoFabrication group) for his thesis ‘Surface gradients under electrochemical control’. n D r. Harmen Droogendijk (Transducers Science & Technology group) for his thesis ‘Bio-inspired MEMS flow and inertial sensors’. n Dr. Wojciech Ogieglo (Membrane Science & Technology group) for his thesis ‘In-Situ Spectroscopic Ellipsometry for Studies of Thin Films and Membranes’.

n D r. Nathalie Katsonis has been appointed as new member of the Young Academy from March 2014. n P rof.dr. Jens Harting has been announced as part-time professor in the group Physics of Fluids. n P rof.dr. Carsten Fallnich has been appointed as part-time professor in the group Laser Physics and Nonlinear Optics.

n Dr. Jolet de Ruiter (Physics of Complex Fluids group) for her thesis ‘An Airbag

n P rof.dr. Detlef Lohse was appointed as Member of the Max Planck Society

for Drops – High speed interferometry studies of air film lubrication in drop

and External Member of the Max-Planck Institute for Dynamics and Self

impact’.

Poster prize MESA+ meeting 2014 On Monday September 22nd, the annual meeting of MESA+ was held in Cinestar

Organization in Göttingen. n P rof.dr.ir. Wilfred van der Wiel (NanoElectronics Group) has been appointed as member of the Executive Committee of the Global Young Academy (GYA) from May 23rd 2014.

Enschede. This symposium gives an overview of activities within MESA+, among

n P rof.dr. Ad Lagendijk (Complex Photonic Systems chair) has been appointed

which their collaboration in various fundamental and applied research projects

as a visiting professor at the leading ESPCI Paris Tech (“Ecole Supérieure de

and programs. The annual meeting also hosts the David Reinhoudt Poster Award.

Physique et de Chimie Industrielles de la ville de Paris”).

The first prize of € 1,000 was awarded to Cecilia Laborde (NanoIonics group) for her poster ‘Real-time imaging of microparticles and living cells with CMOS

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announced as the new Scientific Director of MIRA, the University of Twente’s

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MESA+ Annual Report 2014

[highlights] COPS-Adaptive Quantum Optics (COPS-AQO) combines adaptive methods to counteract or even exploit disorder in nanophotonic systems at the level of single quantum particles. Adaptive systems can react on an external stimulus, can compensate for fluctuations and inevitable randomness in nanophotonic structures. Examples of such structures are multiplescattering photonic media or engineered nanophotonic structures. Working with spatial light modulators, we can control the path of single photons

Prof. dr. Pepijn Pinkse

through the nanophotonic system, mimicking photonic networks such

“Adaptive Quantum Optics:

as beam splitters and more complex networks. Applications of Adaptive

Adapting to tomorrow’s light.”

Quantum Optics in security are being investigated.

Adaptive Quantum Optics Quantum Secure Authentication Modern society strongly relies on authentication methods to provide trust in transactions. Authentication typically relies on “what you know, what you have or what you are”, i.e., a code key, a physical key or a biometric signature. Code keys must be kept secret. Most physical keys and biometric signatures can be copied. Quantum Secure Authentication (QSA), in contrast, is secure against copying of the key, because it uses a key consisting of millions of randomly organized nanoparticles impossible to copy with existing technology. QSA is secure against imitating the key with alternative means by virtue of quantum physics: while the illumination pattern of the readout contains only a small number of photons, it is impossible for an attacker to determine. Therefore he cannot generate the correct response. QSA is secure even when attackers obtain all possible information about the key. Moreover, QSA does not involve unproven mathematical assumptions and is relatively straightforward to implement; we are therefore exploring applications of QSA in high-security access systems and banking.

Figure: Cover of the December issue of Optica showing our artist’s impression of Quantum Secure Authentication [1].

HIGHLIGHTED PUBLICATIONS: [1] S.A. Goorden, M. Horstmann, A.P. Mosk, B. Skoric, P.W.H. Pinkse, Quantum-secure authentication of a physical unclonable key, Optica 1 (2014) 421-424. [2] S.R. Huisman, T.J. Huisman, S.A. Goorden, A.P. Mosk, P.W.H. Pinkse, Programming balanced optical beam splitters in white paint, Opt. Express 22

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(2014) 8320-8332.

[HIGHLIGHTS] The Bio-molecular Electronic Structure (BES) group is a computational group in the field of electronic structure theory and focuses on the methodological

Prof. dr. Claudia Filippi

development of novel and more effective approaches for investigating the

“Electronic-structure theory has dramatically

electronic properties of materials. Our current research centers on the problem

expanded the role of computational modeling,

of describing light-induced phenomena in biological systems, where available

enabling a detailed atomistic understanding of

computational techniques have limited applicability. Deepening our physical

real materials. Our research focuses on the

understanding of the primary excitation processes in photobiological systems

challenge to further enhance the predictive

is important both from a fundamental point of view and because of existing and

power of these approaches while bridging to the

potential applications in biology, biotechnology, and artificial photosynthetic

length-scales of complex (bio)systems.”

devices.

Biomolecular Electronic Structure How to interface correlated quantum calculations of excited states with complex environments? In hybrid multi-scale methods, embedding potentials are frequently used to describe the effect of an environment on the electronic structure of molecules in larger systems, including their excited states. If the excitation is accompanied by significant rearrangements in the electron density of the embedded molecule, the environment is expected to strongly respond to this perturbation. These differential polarization effects must therefore be accounted for and different embedding potentials for the different electronic states are required for an accurate theoretical description of the excitation. We show that straightforward strategies to include environmental effects in terms of effective state-specific potentials break down, and develop a novel embedding scheme that leads to significantly improved excitation energies as demonstrated for prototypical molecules in a solvent.

Figure: Capturing the effect of a solvent on a solute. Easier said than done.

HIGHLIGHTED HIGHLIGHTED PUBLICATION: PUBLICATION:C. O.Daday, Valsson, C. P. Konig, Campomanes, J. Neugebauer, I. Tavernelli, C. Filippi,U.Wavefunction-in-density Rothlisberger, C. Filippi,functional J. Chem. Theory theory embedding Comput. 9 (2013) for excited 2441. states: Which wavefunctions, which densities?, Chem. Phys. Chem. 15 (2014) 3205.

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[highlights] The BIOS Lab-on-a-Chip (LOC) group carries out research

Prof. dr. ir. Albert van den Berg

and develop­ment of LOC systems. Our mission is to further

“We try to do do top-level research

it to companies and spin-offs, develop new micro- and nano-

on micro- and nanofluidics, micro-

techno­logies for LOC systems, and bridge the gap between

analytical chemical systems and

users from physical, chemical, medical and life-science

new nanosensing principles, and

fields.

the know­ledge of nanofluidics and nanosensing and transfer

to integrate that into real-life Labon-Chip systems for biomedical and sustainable applications.”

Figure 1: Schematic representation of the microfluidic

BIOS Lab-on-a-Chip

design, in which the Yin-Yang shaped alternating curved microchannels are shown.(A) Overview of the double T-junction with single-cell encapsulation in picoliter droplets

High-throughput single cell experimentation in picoliter-sized microdroplets

and automatic droplet pairing. (B) Electrocoalescence of the paired droplets, due to the electric field produced by the

High-throughput experimentation with individual cells encapsulated in their own isolated microfluidic environment is of great

electrode pair on either side of the microchannel. (C) Droplet

importance for stem cell differentiation, genetic cell modification and hybridoma creation. All these techniques have great relevance

shrinkage caused by one to three pitchforks structures in a

for medical (therapeutic) and biological applications. We developed a platform capable of encapsulating single cells in picoliter

row, of which one is shown. (D) Cell fusion due to an electrode

microdroplets with high speed (up to 2000 cells/s) and efficiency (> 65%). For single cell encapsulation uniform cell spacing is required,

pair across the microchannel. (300 droplets/sec.).

which was obtained by using a combination of inertial lift force and Dean force induced by spiral like channels (Figure 1). We also realized droplet pairing and electrocoalescence with 95% efficiency and droplet shrinking (up to 75% volume reduction), which are all modalities needed to come to cell-cell fusion and ultimately successful creation of hybridomas. Pairing was obtained by the introduction of a pressure equilibrating channel interconnection, electrocoalescence was realized by integration of platinum electrodes while droplet reduction was obtained by pitchfork structures, having a lower fluidic resistance (Figure 1d). In Figure 2 the droplet fusion by electrocoalescence is illustrated. The results obtained hold great promise for establishment of a microfluidic platform that combines single cell control with high-throughput operation.

Figure 2: Schematic and real image of the double T-junction. The numbers 1–3 represent the different inlets, 1 and 3 function as cell inlets and 2 functions as the oil inlet. N1 and N2 are the two nozzles at which the droplets are formed. (300 droplets/sec.).

HIGHLIGHTED PUBLICATION: R.M. Schoeman, E.W.M. Kemna, F. Wolbers, A. van den Berg, High-throughput deterministic single-cell encapsulation and droplet pairing,

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fusion, and shrinkage in a single microfluidic device, Electrophoresis 34 (2-3) (2014) 385-392.

[HIGHLIGHTS] As material science grows the research in my interdisciplinary group moves toward investigations that go beyond initial chemical synthesis and characterization and ultimately yield

Prof. dr. ir. Pascal Jonkheijm

greater understanding of how materials work when interfacing

“Our goal is to push toward a more

research goal is to interface dynamic chemistry and material

mechanistic understanding of cell-

science with cell biology to study with spatial and temporal

material interfaces that is more

precision a range of complex processes related to cell behavior,

biologically and physiologically

to develop and employ biomaterials for regenerative medicine

informed.”

applications.

with cellular and physiological systems. The main long-term

Bioinspired Molecular Engineering Laboratory A dynamic carrier system for growth factors employing nanobodies Growth factors are considered major therapeutic agents that profoundly affect cell function. However, direct bolus delivery or systemic administration of growth factors is of limited clinical use as excessive dosing is required to detect a measurable effect, which potentially could lead to off-target effects. Correct localization and balance of growth factors can be achieved by adopting a supramolecular strategy. Supramolecular strategies, similar to bioresponsive covalent linkages such as ester or thiol linkages, yield reversibility providing a means to release growth factors and prompt a biological function directly influenced by the desorption. However, as opposed to such type of bioresponsive covalent linkages, supramolecular delivery can be controlled by valency and dissociation rate constants. We have now described a supramolecular strategy to deliver growth factors on -cyclodextrin surfaces using single monomeric variable antibody fragments engineered from heavy chain antibodies found in camelids (VHH fragments) as an intermediate. Employing VHH fragments gives access to capturing growth factors with high affinities while their recombinant production is convenient and gives entry to modification through genetic engineering. Our supramolecular method requires simple assembly steps in physiological conditions and offers the possibility to fine-tune affinities and dissociation rate constants by molecular design. We demonstrate the feasibility of our approach using human bone morphogenetic protein 6 as a model growth factor that is not recombinantly available and therefore cannot be expressed with His-tags to allow for direct noncovalent immobilization. Our results show that biologically relevant amounts of hBMP-6 can be functionally loaded onto the supramolecular VHH carrier system and successively delivered to cells. We show that growth factors can be sequestered to the VHH carrier system, indicating that locally excreted growth factors can

Figure: Schematic presentation of the assembly and

possibly be bound to the surface assisted by VHH.

visualized delivery.

HIGHLIGHTED PUBLICATION: J. Cabanas-Danés, E. Dooms Rodrigues, E. Landman, J. van Weerd, C. A. van Blitterswijk, T. Verrips, J. Huskens, M. Karperien, P. Jonkheijm, A supramolecular host-guest carrier system for growth factors employing VHH fragments, J. Am. Chem. Soc. 136 (2014) 12675-12681.

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[highlights] The Biomolecular NanoTechnology (BNT) group is founded in 2009 by the appointment of it’s chair prof. Jeroen Cornelissen and acts on the interface of biology, physics and materials science coming from a strong chemical back ground. The research of the group centers around the use of biomolecules as building blocks for (functional) nanostructures, relying on principles from Supramolecular and Macromolecular

Prof. dr. Jeroen J.L.M. Cornelissen

Chemistry. Current research lines involve the use of well-defined nanometer-sized

“Using the building blocks from

the field of liquid crystalline materials are explored. The success of the multidisciplinary

Nature to make and understand

work of the group partly relies on intense interactions within MESA+ and with other

new technologies.”

(inter)national collaborators.

protein cages as reactors and as scaffolds for new materials, while new directions in

Figure 1: An azobenzene-based molecular switch is incorporated in the liquid crystal polymer network. Through bio-inspired materials design, its trans to cis isomerization is translated into motion at the macroscale.

Biomolecular NanoTechnology Conversion of light into macroscopic helical motion The molecular machines designed by chemists are capable of myriad motions, including rotation or even walking. However, translating this controlled molecular motion to the macroscopic scale remains a contemporary challenge. Our team took inspiration from the power of movement in plants in order to develop an artificial machine that can convert molecular movement into macroscopic work. Working on bio-inspired and smart materials, we have succeeded in encoding multiple motions into a springlike material that responds to light. The nanostructured springs are made out of a liquid-crystalline polymer, doped with an azobenzene molecular switch. The springs coil to different extents and with different handedness simply by cutting them from the film in different orientations. The differently cut spirals each have different responses to light, including winding, unwinding, or helix inversion. These materials were then used to build a piston-like machine that produces work. Our studies demonstrate the conversion of light into molecular movement which is subsequently translated into macroscopic work. The results also shine new light on the generation of chiral shapes in biology. These materials show potential towards soft robotics and for applications where complexity of movement is favored over strength.

Figure 2: The nanostructured ribbons coil like springs in natural light. In UV light, trans-to-cis isomerization of the molecular switch is triggered. These molecular springs are able to lift objects and produce work (3J/mol of azobenzene).

HIGHLIGHTED PUBLICATION: S. Iamsaard, S.J. Aßhoff, B. Matt, T. Kudernac, J.J.L.M. Cornelissen, S.P. Fletcher, N. Katsonis, Conversion of light into macroscopic helical

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motion, Nat. Chem. 6 (2014) 229-235.

[HIGHLIGHTS] The Computational BioPhysics (CBP) group investigates how the thermo­ dynamic and rheological properties of a complex fluid emerge from its molecular constitution. Our computational studies focus on the mesoscopic level, i.e. the time and length scales of the macro-molecules determining the macroscopic behaviour, while the atomic details of these molecules are reduced to their bare essentials. By developing equations of motions and force fields that capture only the crucial molecular features, a complex molecule like a polymer or a protein can be modeled as a single particle.

Prof. dr. Wim J. Briels

This approach proves very successful in studying the emerging macroscopic

“There's plenty of room in the middle.”

properties of biological and non-biological soft condensed matter.

Computational BioPhysics Early stages of protein aggregation in neuro-degenerative diseases Parkinson’s disease is a neuronal disorder that affects about 2% of the population over 65 years of age. Brains of patients typically contain plaques of alpha-synuclein protein. This protein is intrinsically disordered – it shows little secondary structure in the native state – but is known to become alpha helical in contact with a membrane and to form cross-beta sheets in amyloid fibrils. We are, in close collaboration with several experimental groups, studying the formation process of fibrils, see figure. Because the time and length scales relevant for the aggregation process can not be achieved by conventional atomistic simulations, we have developed a highly coarse-grained representation of alpha-synuclein as a single particle with variable shape and binding capabilities: a sphere in the disordered state and a sphero-cylinder with interaction patches in the folded state. To simulate the motion of the anisotropic particles, we developed a Rotational Brownian Dynamics algorithm [1,2]. To model polymorphism, we endowed every particle with an internal coordinate [3]. The corresponding internal potential, see figure, favours the disordered state for free particles. Interactions lower the potential energy of a particle, but more so for the folded state than for the unfolded state, see figure. The simulations show two fibril formation mechanisms, depending on the conditions. In one step nucleation, see figure, two disordered particles bind and transform into an ordered dimer. In two step nucleation, the disordered particles first form oligomers

Figure: (Top) Nucleation pathways from disordered proteins,

and subsequently transit into a fibril [3].

represented by red spheres, to fibrils of ordered proteins, drawn as blue rods with red patches marking the location of hydrogen bonds. (Bottom) The internal potential of the particle, drawn in black, favours the unfolded state while the combination with inter-particle interactions, drawn in red, tilts the balance to the ordered state.

HIGHLIGHTED PUBLICATIONS: [1] I.M. Ilie, W.K. den Otter, W.J. Briels, Rotational Brownian Dynamics simulations of clathrin cage formation, J.Chem.Phys. 141 (2014) 065101 [2] I.M. Ilie, W.J. Briels, W.K. den Otter, An elementary singularity-free Rotational Brownian Dynamics algorithm for anisotropic paricles, J.Chem.Phys. 142 (2015) 114102. [3] I.M. Ilie, W.K. den Otter, W.J. Briels, Aggregation and fibrillation of alpha synuclein by polymorph patchy particles, in preparation.

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[highlights] Capillary flows appear in a wide variety of contexts, ranging from natural phenomena to microfluidics and coating technologies. We study the dynamics of such flows, with a focus on wetting and

Prof. dr. ir. Jacco Snoeijer

spreading, and their natural tendency to develop instabilities.

"A simple droplet of water placed

walls are deformable, as arises in soft wetting and lubrication

on a soft surface sheds new light

of sliding solids. We investigate both the emerging macroscopic

on capillary interactions and the

flow phenomena as well as the molecular aspects of these elasto-

mechanics of soft interfaces.”

capillary interactions.

Fundamentally new phenomena appear when the confining

Capillary Flows & Elasticity Liquid drops move by surfing a wetting ridge The dynamics of wetting, such as the spreading of a droplet, is usually governed by the flow inside the liquid [1]. A totally different picture emerges when the substrate is highly deformable, as is the case for a drop on a soft gel or elastomer. Our experiments reveal that the spreading dynamics is slowed down by orders of magnitude when the substrate is very soft, and in addition we observe stick-slip motion. The capillary forces near the contact line induce an elastic deformation, forming the so-called “wetting ridge” (see Figure). At equilibrium, the shape of the wetting ridge and the resulting contact angle follows from a minimization of elastic and surface free energies [2]. When the contact line moves, the fluid drags the wetting ridge along as it moves over the substrate, inducing strong visco-elastic dissipation inside the highly deformed solid. We develop a theory that explains how the rheological properties of the solid completely determine the motion of the liquid. This theory is confirmed experimentally by detailed measurements of the dynamic contact angle. We found that above a critical angle the wetting ridge cannot accommodate steady motion and leads to dynamical depinning [3]. A consequence is that the spreading undergoes an intricate stick-slip motion, during which the contact line slides down the wetting ridge. Figure: Statics and dynamics of a wetting ridge below a liquid drop on a soft surface. (a) Equilibrium shape of the wetting ridge. (b) Growth of the ridge after droplet deposition. (c) Dynamic contact angle during spreading. (d) Dynamical depinning event, where the contact line slides down the wetting ridge.

HIGHLIGHTED PUBLICATIONs: [1] B.B.J. Stapelbroek, H.P. Jansen, E.S. Kooij, J.H. Snoeijer, A. Eddi, Universal spreading of water drops on complex surfaces, Soft Matter 10 (2014) 2641. [2] L.A. Lubbers, J.H. Weijs, L. Botto, S. Das, B. Andreotti, J.H. Snoeijer, Drops on soft solids: Free energy and double transition of contact angles, J. Fluid Mech.

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747 (2014) R1. [3] S. Karpitschka, S. Das, M. van Gorcum, H. Perrin, B. Andreotti, J.H. Snoeijer, Dynamic contact angle of a soft linear viscoelastic solid, arXiv:1406.5547.

[HIGHLIGHTS] Understanding the magnetic, optical, electrical and structural properties of solids in terms of their chemical composition and atomic structure by numerically solving the quantum mechanical equations describing the motion of the electrons is the central research activity of the group Computational Materials Science. These equations contain no input from experiment other than the fundamental physical constants, making it possible to analyze the

Prof. dr. Paul J. Kelly

properties of systems which are difficult to characterize experimentally or to

”Computational Materials Science:

predict the physical properties of materials which have not yet been made.

taking the guesswork out of

This is especially important when experimentalists attempt to make hybrid

NanoScience and Technology.”

structures approaching the nanoscale.

Computational Materials Science Magnetization damping The piece of material representing a "bit" in a magnetic storage medium is designed to have two stable states that can represent a one or a zero. To switch the orientation of the magnetization from "up" to "down" or vice versa, the system is taken out of its stable state by supplying energy. To return to a stable state, the surplus energy and angular momentum must be removed by dissipation. This so-called "magnetization damping" represents a limit to how fast information can be written onto a magnetic hard disk. For bulk materials, it is described using an equation called the Landau-Lifshitz-Gilbert equation in which the damping is described by a dimensionless constant  introduced by Gilbert and called after him. In a bulk magnetic material,  is taken to be just that - constant. However, experiments performed on thin layers of the ferromagnetic alloy Permalloy (Py: Ni80Fe20) sandwiched between layers of nonmagnetic metals (NM) show that the damping increases as the thickness d of the magnetic film is reduced (see figure 1) and also that the damping depends on the NM metal used in the sandwich (NM = Cu, Pd, Ta and Pt). The approximately 1/d behaviour of the damping can be explained in terms of energy and angular momentum being "pumped" out of the magnetic material through the interface into the NM material where dissipation occurs; for heavy elements like Pt with large spin-orbit coupling, this dissipation is very large. The damping in a layer of magnetic material can be expressed in terms of the microsopic, quantum mechanical scattering matrix for the layer. We used a method developed in Twente to calculate scattering matrices from "first-principles" to determine the damping (dashed lines). Not only do we reproduce the observed 1/d behaviour, we also reproduce the dependence on NM. Further analysis

Figure 1: Calculated (solid lines) Gilbert damping of NM|Py|NM

shows that spin-flipping at the interface plays an essential role.

(NM = Cu, Pd, Ta, and Pt) compared to experimental measurements (dotted lines) as a function of the Py thickness d. Inset: sketch of the structure used in the calculations. The dashed frame denotes one structural unit consisting of a Py film between two NM films.

HIGHLIGHTED PUBLICATION: Y. Liu, Z. Yuan, R.J.H. Wesselink, A.A Starikov, P.J. Kelly, Interface enhancement of Gilbert damping from first-principles, Phys. Rev. Lett. 113 (2014) 207202.

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[highlights] Willem Vos (Photonic Media, PM), Ad Lagendijk (Waves in Complex Media, WICM), Allard Mosk (Control of Nano­ photonic Scattering, CNS), Pepijn Pinkse (Adaptive Quantum Optics, AQO) and Bill Barnes (Complex Plasmonic Systems, CPS) and about 20 other young scientists together form the group Complex Photonic Systems (COPS), led by Willem Vos. The group studies light propagation in ordered and disordered nanophotonic materials. Novel photonic nanostructures are fabricated and characterized in the MESA+ cleanroom. Our optical experiments are combined with a theoretical understanding of the properties of light. Our curiosity driven research is of interest to various industrial partners, and to applications in medical and biophysical imaging and security.

Prof. dr. Allard Mosk

COPS-Control of Nanophotonic Scattering (COPS-CNS) develops methods to study and control light

”Everything is a lens.”

study fundamental and applied physics of light.

propagation through ordered and disordered nanophotonic media. Using control of light propagation, we

Control of Nanophotonic Scattering High-resolution fluorescence imaging: Speckle correlation resolution enhancement of wide-field fluorescence imaging The smallest detail a traditional optical microscope can reveal is about half the wavelength of green light, or 0.25 micrometer (a micrometer is a thousandth of a millimeter). Many interesting and important structures in biological cells and computer chips have features smaller than that. A very convenient and general method to enhance the resolution of microscopes is to structure the illumination. From several pictures under different illuminations, a single high-resolution image is constructed in the computer. So far, scientists have carefully selected the clearest glass optics for such imaging. Yet, the range of materials from which clear optics can be made is limited. In many materials random scattering takes place. Randomly scattered laser light appears as a finely grained speckle pattern as a result of interference of many scattered light paths. COPS scientists have developed a new and powerful approach to use these fine speckles for high resolution imaging. Using optimized scattering materials they produce the finest-grained speckles yet made with visible light. With this speckle illumination they obtain fluorescence images that have a very high resolution (0.12 micrometer) and a wide field of view. In the new method, the object you want to see – for instance a biological cell – is placed on the substrate of the scattering material and the laser light is shone upon the scattering surface. The lens creates a speckle pattern that can be scanned on the object. Multiple Figure 1: Can smashing your lens make the image clearer?

low resolution images of the object are then combined in the computer, which leads to a clear image. The speckle illumination method

Left: Smashed camera lens (Shutterstock) Right: A collection

is surface-specific and robust to environmental noise. The new high-resolution imaging method, called Speckle Correlation Resolution

of fluorescent nanoparticles imaged by a conventional high-

Enhancement (SCORE) is reported in the Optical Society’s (OSA) new high-impact journal Optica.

resolution microscope (left/top) and by SCORE microscopy (bottom/right). The scattered light in SCORE reveals much finer details. The size of the square image is 10 µm x 10 µm.

HIGHLIGHTED PUBLICATION: H. Yilmaz, E.G. van Putten, J. Bertolotti, A. Lagendijk, W.L. Vos, A.P. Mosk, Speckle correlation resolution enhancement of wide-field

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fluorescence imaging, Optica 2 (2015) 424-429.

[HIGHLIGHTS] Willem Vos (Photonic Media, PM), Ad Lagendijk (Waves in Complex Media, WICM), Allard Mosk (Control of Nanophotonic Scattering, CNS), Pepijn Pinkse (Adaptive Quantum Optics, AQO) and Bill Barnes (Complex Plasmonic Systems, CPS) and

Prof. dr. Willem L. Vos

about 20 other young scientists together form the group Complex Photonic Systems

“COPS strives to catch light with

(COPS), led by Willem Vos. The group studies light propagation in ordered and

nanostructures. But beware dear

disordered nanophotonic materials. Novel photonic nanostructures are fabricated

colleagues, since Shakespeare once

and characterized in the MESA+ cleanroom. Our optical experiments are combined

said: ‘Light, seeking light, doth light of

with a theoretical understanding of the properties of light. Our curiosity driven

light beguile’. In other words: the eye in

research is of interest to various industrial partners, and to applications in medical

seeking truth deprives itself of vision.”

and biophysical imaging and security.

Complex Photonic Systems The Color of LEDs The 2014 Nobel Prize in Physics was awarded “for the invention of efficient blue light-emitting diodes which has enabled bright and

energy-saving white light sources". Yet the process optical engineers use to target a desired color for a white light-emitting diode is like spraying a savannah with buckshot in the hope of fortuitously downing a well-hidden antelope. They collect large amounts of experimental data and accumulate numerous Monte Carlo simulations to hit upon the right mixture of luminescent phosphor and scatterers for a white LED with the desired color characteristics, e.g. for “warm” white light. COPS scientists together with Philips have come up with an understanding of the transport of light in white LEDs in physical terms. It turns out that light scattering can be well understood as a random walk of a drunken sailor with a step size called the mean free path. Moreover, the absorption of blue light is understood as the endpoint of the random walk. This information is used for new design rules in terms of the average size of a random step relative to the thickness of the phosphor layer. This approach provides a physics-driven guide to designing white LEDs, reducing the amount of guesswork and trial-and-error involved to obtain the optimal color. The results have appeared in the leading journal Optics Express, published by the Optical Society of America [1].

Figure: Hitting the optimal color point of a white LED guided by the physics of diffusion vs. “buckshot” trial-and-error. The physics approach is “greener” in the sense that precious resources will be saved.

HIGHLIGHTED PUBLICATIONS: [1] V.Y.F. Leung, A. Lagendijk, T.W. Tukker, A.P. Mosk, W.L. IJzerman, W.L. Vos, Interplay between multiple scattering, emission, and absorption of light in the phosphor of a white light-emitting diode, Opt. Express 22 (2014) 8190-8204. [2] L.A. Woldering, A.P. Mosk, W.L. Vos, Design of a 3D photonic band gap cavity in a diamond-like inverse woodpile photonic crystal, Phys. Rev. B 90 (2014) 115140: 1-9. [3] E. Yeganegi, A. Lagendijk, A.P. Mosk, W.L. Vos, Local density of optical states in the band gap of a finite one-dimensional photonic crystal, Phys. Rev. B 89 (2014) 045123: 1-10.

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[highlights] Prof. dr. ir. Leon Lefferts

The aim of the Catalytic Processes and Materials group is to understand heterogeneous catalysis

“One of the most valuable

by investigation of catalytic reactions and materials on a fundamental level in combination with

applications of nanotechnology

their application in practical processes. Our research focuses on three themes:

is in the area of heterogeneous

1. Sustainable processes for fuels and chemicals, like catalytic conversion of biomass to fuels.

catalysis. The challenges are to

2. Heterogeneous catalysis in liquid phase.

improve the level of control over the

3. New concepts in alkane activation and selective oxidation.

active nanoparticles as well as the

The fundamental study of surface reactions in liquid phase requires the development of new

local conditions at those particles,

analysis techniques for which CPM is in the forefront of leading catalysis groups in the world.

and to understand the molecular

Moreover, we explore preparation and application of new highly porous, micro-structured support

mechanism at the surface.”

materials as well as micro-structured-reactors and micro-fluidic devices, using the information obtained from in-situ spectroscopy studies.

Catalytic Processes and Materials Polymer Manipulates Catalytic Performance of Pd-nanoparticles Pd colloids stabilized with polyvinyl alcohol (PVA) and polyvinylpyrrolidone (PVP) have been tested for performance in nitrite hydrogenation as unsupported nanoparticles. Both polymer stabilizers decrease activity by covering part of the active Pd atoms at the surface, which is not a surprise. In contrast, it was very surprising to find that PVP affected the performance of the uncovered sites; the activity increased whereas selectivity to N2 improved at the expense of unwanted ammonia formation. No such effects were observed with PVA. PVP clearly influences adsorbed reaction intermediates on the surface of the Pd particle, as schematically presented in the graph.

Figure: HRTEM pictures of Pd nanoparticles stabilized with PVA.

HIGHLIGHTED PUBLICATION: Y. Zhao, J.A. Baeza, N. Koteswara Rao, L. Calvo, M. A. Gilarranz, Y. D. Li, L. Lefferts, Unsupported PVA- and PVP-stabilized Pd nanoparticles

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as catalyst for nitrite hydrogenation in aqueous phase, Journal of Catalysis 318 (2014) 162-169.

[HIGHLIGHTS] Prof. dr. ir. Nieck Benes

Activities of the Films in Fluids group revolve around the rational design of

“Combining dissimilar constituents

fluids. Examples of these films include membranes for molecular separations under

on a molecular scale can

extreme conditions, such as high temperature, elevated pressure, and chemically

lead to exciting new materials

demanding environments. The group aspires to develop robust and facile methods

properties that, for instance,

that allow the fabrication of such advanced thin films on industrially relevant

allow unprecedented and superior

scales. Current major topics are the synthesis of hyper-cross-linked nanoscale-

separation performance of thin

hybrid membranes, and the in-situ characterization of macromolecular films

membrane films exposed to fluids in

exposed to fluids. The group combines Materials Science on the molecular length

extreme conditions.”

scale with Process Technology on a macroscopic length scale.

functional films that are to be used in applications where they are exposed to

Films in Fluids Nanoscale-Hybrid Membranes for sieving of Hot Gases Figure 1: Artist impression of a thin hybrid membrane on

Separation of hot gases by membranes is a potential key enabling technique for many large-scale chemical processes and advanced

a ceramic support with gas sieving ability persisting at

energy production technologies. At present, there are no commercially produced membranes that can separate hot small gas molecules

temperatures up to 300 °C (JACS, 136 330−335 2014).

on a large scale. Effective molecular sieving requires that the chains of organic polymer membranes are sufficiently rigid. At elevated temperatures the macromolecular dynamics of state-of-the-art organic polymers increase and the sieving abilities of these materials break down. For inorganic membranes tremendous efforts are required to allow defect-free processing at the scale of industrially relevant applications. Recently, in a collaborative effort of Films in Fluids and Materials Science and Technology of Polymers, we have presented a method for the facile synthesis of novel hyper-cross-linked organic-inorganic hybrid membranes. The method is based on the interfacial polymerization reaction between amine functionalized polyhedral oligomeric silsesquioxanes and aromatic dianhydrides, followed by thermal imidization. The resulting ultrathin membranes consist of giant molecular networks of alternating inorganic cages and aromatic imide bridges. The hybrid characteristics of these membrane are manifested in excellent gas separation performance at elevated temperatures; selective sieving of small hydrogen molecules from a mixture with nitrogen molecules persists up to 300 °C (see Figure 1).

Figure 2: Figure 2. Left: Gas sieving performance of polyPOSS

Unlike the syntheses of other nano-engineered materials for high-temperature separations, the simple and reliable two-step synthetic

imides with different imide bridges, at 200 °C. Right:

process for generating the hybrid films is suitable for large-scale and defect-free production. The presented method is versatile and

The H2 /N2 ideal gas selectivity as a function of hydrogen

allows the use of a large variety of cross-linkers, to synthesis a large variety of hybrid materials. For example, the type of imide bridges

permeance at 100 °C (open, crossed symbols), 200 °C (closed

can be changed to tailor the separation performance for specific applications (see Figure 2). Current and future activities are aimed

symbols), and 300 °C (open symbols), for different imide

further exploring this versatility, to further broaden the application landscape of these hybrid membranes.

bridges. The selectivity increases with decreasing imide bridge length, while the permeance is lower for the short imide bridges (Chem. Matter 26 3660−3664 2014).

HIGHLIGHTED PUBLICATIONS: [1] M.J.T. Raaijmakers, M.A. Hempenius, P.M. Schön, G.J. Vancso, A. Nijmeijer, M. Wessling, N.E. Benes, Sieving of hot gases by hypercross-linked nanoscale-hybrid membranes. Journal of the American Chemical Society 136(1) (2014) 330-335. [2] M.J.T. Raaijmakers, M. Wessling, A. Nijmeijer, N.E. Benes, Hybrid Polyhedral Oligomeric Silsesquioxanes-Imides with Tailored Intercage Spacing for Sieving of Hot Gases, Chemistry of Materials 26(12) (2014) 3660-3664.

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[highlights] Prof. dr. ir. Hans Hilgenkamp

Materials with exceptional, well-tailored properties are at the heart of many new applicati-

"Electronic correlations and aspects of

structuring, as well as the use of compounds in which the intrinsic physics involves ‘special

topology add rich phenomenology to the

effects’. These can arise from intricate interactions of the mobile charge carriers mutually

properties of materials and interfaces.

(‘electronic correlations’) and/or with the crystal lattice.

Advanced control - down to the atomic

In the Interfaces and Correlated Electron systems group, the fabrication and basic properties

level - in materials fabrication creates

of such nano-structured novel materials are studied, and their potential for applications is ex-

exciting possibilities for the further

plored. Current research involves superconductors, p- and n-doped Mott compounds, topolo-

exploration of these phenomena and

gical insulators, electronically active interfaces between oxide insulators and novel electronic

their use in practical applications."

materials and device concepts for low power electronics and neuromorphic circuitry.

ons. In the electronic/magnetic domains, powerful means to create such properties are nano­

Interfaces and Correlated Electron systems Imaging and Control of Ferromagnetism in LaMnO3/ SrTiO3 heterostructures Figure 1: Artist’ impression of Scanning SQUID Magnetic

Perovskite oxide materials have a wide range of extraordinary electronic and magnetic properties. Famous examples are for example

Microscopy.

high critical temperature superconductivity in copper-based oxides and colossal magnetoresistance in the manganites. Another remarkable feature is that ultrasharp transitions between different states can be invoked, for example with slight changes of the atomic composition, or by strain, temperature or applied electric/magnetic fields. In a collaboration with NUS Singapore, University of Nebraska, Stanford University and Trinity College Dublin, we have discovered an ultrasharp phase transition in LaMnO3 thin films as a function of the film thickness. For 5 unit cells or thinner, the films are antiferromagnetic, whereas for 6 unit cells or more the films are ferromagnetic. This ferromagnetism can be seen very clearly using Scanning SQUID Magnetic Microscopy, a technique for imaging magnetic domains which we have available in house (see Figure 1). This thickness dependence of the magnetic properties of the LaMnO3 films makes it possible to select between the antiferromagnetic and magnetic state with the addition, or not, of less than 1 nm of material (as 1 unit cell is about 0.4nm). This is of interest for future nano-electronic applications. Figure 2 shows the different magnetic properties of a film composed partly of 5 unit cells and partly of 7 unit cells of LaMnO3.

Figure 2: Magnetic microscopy image of a LaMnO 3 film, partly 5 unit cells thick and partly 7 unit cells thick. The 7 unit cells part clearly shows magnetic signals as it is ferromagnetic, the 5 unit cells part is antiferromagnetic and does not give rise of a net ferromagnetic moment observable with Scanning SQUID Magnetic Microscopy.

HIGHLIGHTED PUBLICATION: X. Renshaw Wang, C.J. Li, W.M. Lü, T.R. Paudel, D.P. Leusink, M. Hoek, N. Poccia, A. Vailionis, T. Venkatesan, J.M.D. Coey, E.Y. Tsymbal,

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Ariando, H. Hilgenkamp, Imaging and Control of Ferromagnetism in a Polar Antiferromagnet, ArXiv 1409.0520.

[HIGHLIGHTS] Research in the Inorganic & Hybrid Nanomaterials Chemistry (IHNC) group focuses on the development and understanding of novel processing routes for hybrid and inorganic nano­m aterials, with

Prof. dr. ir. André ten Elshof

tures for energy, electronic and bio­medical applications. Starting

“Development of new

from colloidal solutions of nanoparticles, complexes, nano­wires or

functional materials is key

nanosheets, new functional nano­materials are assembled. The use

to solving many of the

of low temperature, energy and environmentally friendly resource

technological challenges

efficient processing routes is central to our strategy.

emphasis on micro/nano­patterns and low-dimen­sional nano­struc­

of the 21st century.”

Inorganic & Hybrid Nanomaterials Chemistry Photocatalytically active nanowires and nanocubes Nanostructures such as nanorods, nanowires and nanocubes have a high potential for utilization in a range of novel nanotechnological and biomedical applications. For solar fuel applications, we developed a novel type of core-shell nanowire with emergent photocatalytic property. The wires were grown in a nanoporous template using electrochemical syntheses. The functionality of the wires is based on their core-shell architecture. They consist of a photoactive titania (TiO2) shell surrounding a silver (Ag) core, and they are essentially nanoscale photo-electrochemical diodes. When the nanowires are isolated from the template, dispersed in water and exposed to UV light, they autonomously catalyze the conversion of water to hydrogen and oxygen. Excitons are generated in the TiO2 photoanode shell upon illumination. The electrons

Figure 1: Photocatalytic water splitting by Ag@TiO2

are transported to the Ag cathode, where they participate in the reduction of aqueous protons to hydrogen gas. The electron holes

nanowires. (1) Solar photon absorption; (2) Exciton formation;

remain behind in the TiO2 phase until they are consumed in the oxygen formation reaction at the surface.

(3) Water splitting and O2 + proton formation at TiO2 surface;

Using similar templating techniques, we also made MoS2 nanocubes, and investigated these as electrodes for the hydrogen evolution

(4) H2 formation by proton reduction at Ag cathode.

reaction (HER) in aqueous solutions. Our newly developed nanocube-patterned substrates were found to require a 20−40 mV lower overpotential in comparison with planar MoS2 films. The significantly increased HER activity in the nanocube morphology is probably because of a higher density of catalytically active edge sites at the nanocube surface.

Figure 2: SEM and TEM images of MoS2 nanocube structures with a lateral size of approximately 500 nm.

HIGHLIGHTED PUBLICATIONS: [1] A.W. Maijenburg, J. Veerbeek, R. de Putter, S.A. Veldhuis, M.G.C. Zoontjes, G. Mul, J.M. Montero-Moreno, K. Nielsch, H. Schäfer, M. Steinhart, J.E. ten Elshof, Electrochemical synthesis of coaxial TiO2-Ag nanowires and their application in photocatalytic water splitting, J. Mater. Chem. A 2 (2014) 26482656. [2] A.W. Maijenburg, M. Regis, A.N. Hattori, H. Tanaka, K.-S. Choi, J.E. ten Elshof, MoS2 Nanocube structures as catalysts for electrochemical H2 evolution from acidic aqueous solutions, ACS Appl. Mater. Interfaces 6 (2014) 2003-2010.

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[highlights] Activities of the Inorganic Membranes (IM) group evolve around

Prof. dr. ir. Arian Nijmeijer

energy efficient molecular separations under extreme conditions,

"Material science on the Ångstrom

demanding environments, using hybrid and inorganic membranes.

scale to make inorganic and

The group combines Materials Science in the Ångstrom range length

hybrid membranes that can be

scale with Process Technology on macroscopic scale. Particular

applied under demanding process

topics include, sol-gel derived nano-porous membranes, dense

conditions, in large-scale industrial

ion conducting membranes, hyper-cross-linked nanoscale-hybrid

separation processes.”

membranes, inorganic porous hollow fiber membranes and inorganic

for instance high temperature, elevated pressure, and chemically

porous scaffolds.

Inorganic Membranes Polymer-grafted ceramic membranes for solvent nanofiltration Separation of organic solvents by membranes is a potential key enabling technique for many large-scale chemical processes and advanced energy production technologies. State-of-the art polymeric or ceramic membranes do not always meet stability and/or selectivity demands at process-relevant conditions like separation/purification of harsh organic solvents and operations at high temperatures or pressures. In order to fulfill these operational requirements, non-swelling and non-compactable mesoporous ceramic membranes are developed that act as a rigid support on which polymeric materials are immobilized (i.e. covalently or electrostatically bonded). The immobilized or grafted polymer imparts the desired membrane selectivity while the ceramic support provides the mechanical, thermal and chemical stability. The figure shows an example of grafting an inorganic surface/pore with a PDMS molecule. Analysis techniques like FTIR and TGA confirmed that both linker and polymer were successfully grafted and that the ceramic pore walls were modified. Solvent permeation showed that these hydrophobic nanofiltration membranes could reproducible be fabricated, while having a stable and high solvent flux. The most drastic way to show chemical stability was the exposure of PDMS-grafted membranes for more than 100 days to a variety of industrially relevant solvents (like hexane, toluene, isopropanol) at room temperature and subsequently 4 days in isopropanol at 75 ºC or 6 days in toluene at 90 °C. After these harsh treatments the membranes remained hydrophobic and the organic solvent permeance behavior of these membrane did not change, while the molecular weight cut-off (MWCO) remained constant as well (~ 500 Da). Figure: Reaction of 3-mercaptopropyl-triethoxysilane (MPTES) as ‘linker’ with a  -alumina surface (step 1) and subsequent grafting of a monovinyl-terminated polydimethylsiloxane (PDMS) (step 2).

HIGHLIGHTED PUBLICATIONs: [1] A.F.M. Pinheiro, D. Hoogendoorn, A. Nijmeijer, L. Winnubst, Development of a PDMS-grafted alumina membrane and its evaluation as solvent resistant nanofiltration membrane, Journal of Membrane Science 463 (2014) 24-32. [2] C.R. Tanardi, A.F.M. Pinheiro, A. Nijmeijer, L. Winnubst, PDMS grafting of

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mesoporous -alumina membranes for nanofiltration of organic solvents, Journal of Membrane Science 469 (2014) 471-477.

[HIGHLIGHTS] Prof. dr. ing. Guus Rijnders

The Inorganic Materials Science (IMS) group works at the international forefront

“Recent developments in controlled

of materials science research on complex metal oxides and hybrids, and

synthesis and characterization tools has

provides an environment where young researchers and students are stimulated

increased the applicability of inorganic

to excel. The research is focused on establishing a fundamental understanding

nanoscale materials enormously. This

of the relationship between composition, structure and solid-state physical and

holds especially for complex and functional

chemical properties of inorganic materials, especially oxides. Insights into these

oxide materials, enabling the development

relationships enable us to design new materials with improved and yet unknown

of new materials and devices with novel

properties that are of interest for fundamental studies as well as for industrial

functionalities. Our aim is to consolidate

applications. With the possibility to design and construct artificial materials on

our leading role in this field.”

demand, new opportunities become available for novel device concepts.

Inorganic Materials Science Nanosheet controlled epitaxial growth of PbZr0.52Ti0.48O3 thin films on glass substrates

Figure 1: Optical image of fully processed PiezoMEMS 4” Si wafer. The PZT film has been grown by Solmates BV using pulsed laser deposition.

In the last few decades, lead zirconate titanate, PbZr 0.52Ti0.48O3 (PZT) thin films have found a plethora of applications in micro­ electromechanical systems (MEMS, see Figure 1) and memory devices. The choice of PZT in these applications stems from its remarkable ferroelectric and piezoelectric properties. These properties are strongly related to the quality of the crystal growth and the orientation of the PZT thin films, therefore well-oriented crystalline growth or epitaxial growth with control of the orientation is highly desired. For practical applications, integration of PZT films on widely used inexpensive substrates such as Si and glass is required. Integration on glass is of high importance in order to pave the way to integrate PZT on amorphous structures, such as SiO2 that is commonly used in semiconductor devices and Mo/Si mirror coatings for extreme ultraviolet (EUV) photolithography. In a collaborative effort with the XUV group, we reported the epitaxial growth of PZT films with (100)- and (110)-orientation achieved by utilizing Ca2Nb3O10 (CNO) and Ti0.87O2 (TO) nanosheets as crystalline buffer layers. Fatigue measurements demonstrated stable ferroelectric properties of these films up to 5 x 109 cycles. More important, the fabricated films show comparable or higher ferroelectric and piezoelectric responses (see Figure 2) than the values reported in the literature. The presented approach can also be used in integrating PZT films on amorphous surfaces for semiconductor circuits, glass waveguides and amorphous coatings like EUV mirrors.

Figure 2: Longitudinal piezoelectric response (d33,f) of PZT on glass using nanosheet buffers as well as Pt, measured using a laser Doppler vibrometer.

Highlighted publication: M. Bayraktar, A. Chopra, F. Bijkerk, G. Rijnders, Nanosheet controlled epitaxial growth of PbZr0.52Ti0.48O3 thin films on glass substrates, Appl. Phys. Lett. 105 (2014) 132904.

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[highlights] The Laser Physics and Nonlinear Optics (LPNO) group explores the generation and manipulation of coherent light in improved and novel ways. This includes new concepts for lasers and nonlinear optical interactions. Research comprises wide ranges of intensities, time scales and light frequencies. Regarding

Prof. dr. Klaus J. Boller

laser concepts we investigate novel types of laser such as based on slow light in photonic structures or

"Light displays the

of light with large spectral bandwidth is investigated, as required for sensitive and specific detection

beauty of nature.

of molecules. We devise methods to implement such nonlinear generation in waveguides for use in

We put light to work,

integrated photonics. Nonlinear generation at extreme intensities is investigated, which generates ultra-

for knowledge and

short pulses in the XUV wavelength range. Such radiation in combination with nano-structured optics

applications."

can enable improved spectral control, microscopy and XUV lithography on the nano-scale.

based on ultra-narrowband and mode-locked diode lasers with external feedback. Nonlinear generation

Laser Physics and Nonlinear Optics On-chip Super-Continuum Generation Optical waveguides comprising a silicon nitride (Si3N4) core embedded in silicon oxide (SiO2) offer record-low propagation loss (< 2%/m), which is of highest importance for routing, delaying and filtering of light on a chip for novel applications (see, e.g., [1]). We have recently expanded the functionality of such waveguides into the nonlinear optical regime, via generation of extremely broadband radiation, socalled super-continuum radiation, and via third-harmonic generation. The central precondition for opening this route towards nonlinear optics is to provide an appropriate spectral variation of the group velocity for which the Si3N4 waveguide cores need to be larger than 1000 nm by 600 nm. We have introduced a novel method that offers crack-free wafer-scale fabrication with up to 900 nm width and, so far, 1200 nm thickness [2]. An example of such waveguide is depicted in figure 1. Figure 1: Cross sectional SEM picture of an optical waveguide

Using these novel waveguides we demonstrated simultaneous super-continuum and third-harmonic generation by injecting ultra-short

(red: Si3N4 –core, blue: SiO2, -cladding).

pulses with a duration of 65 fs at a wavelength of 1580 nm. For the generation, the waveguide cross section is chosen to locate, for the quasi-TM fundamental mode, the wavelength of zero group velocity dispersion at a value of 1600 nm. Figure 2 displays the super-continuum spectrum measured vs. the peak power of the injected drive pulses. One can see that the spectral bandwidth and overall output increases systematically with the drive laser peak power. Simultaneously, the waveguide emits the third harmonic of the super-continuum as broadband green radiation. These experiments form an important proof of principle, showing the successful introduction of nonlinear optics to the chip level with our low-loss waveguide platform. We expect that this will deliver farreaching possibilities, such as optically integrated frequency combs, all-optical switching of waveguide modes, or on-chip tunable light generation for applications bio-medical imaging and detection.

Figure 2: Measured super-continuum output as function of drive laser peak power.

HIGHLIGHTED PUBLICATIONs: [1] L. Zhang, M. Hoekman, C. Taddei, A. Leinse, R.G. Heideman, A. Hulzinga, J. Verpoorte, R.M. Oldenbeuving, P.W.L. van Dijk, K.J. Boller, C.G.H. Roeloffzen, On-chip microwave photonic beamformer circuits operating with phase modulation and direct detection, Opt. Express. 22 (2014) 17079. [2] J.P. Epping, M.

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Hoekman, R. Mateman, A. Leinse, R.G. Heideman, A. van Rees, P.J.M. van der Slot, C.J. Lee, K.J. Boller, High confinement, high yield Si3N4 waveguides for nonlinear optical applications, Opt. Express 23 (2015) 642.

[HIGHLIGHTS] The Mathematics of Computational Science (MACS) group focuses on the mathematical aspects of advanced scientific computing. The two main research areas are the development, analysis and application of numerical algorithms for the (adaptive) solution of partial differential equations and mathematical modeling of multi-scale

Prof. dr. ir. Jaap J.W. van der Vegt

problems making these accessible for computation. Special emphasis is put on

“Structure preserving numerical

and efficient (parallel) solution algorithms for large algebraic systems. Important

discretizations are indispensable

applications are in the fields of computational electromagnetics (nanophotonics), free

for accurate long time wave

surface flows (water waves, inkjet printing), (dispersed) two-phase flows and phase

simulations.”

transition, granular flows and waves in elastic media.

the development and analysis of discontinuous Galerkin finite element methods

Mathematics of Computational Science Structure preserving finite element discretizations for hamiltonian systems Many important physical systems in nature have a Hamiltonian structure. Examples are the Euler equations for inviscid compressible and incompressible fluids and the Maxwell equations. Preserving the underlying mathematical structure of these equations is an important objective when they are discretized. This results in structure preserving numerical discretizations that are generally more accurate than algorithms that do not preserve the special mathematical structure of the equations. For instance, the numerical discretization can preserve energy at the discrete level and is more accurate for long integration times. This is particularly important when one studies wave phenomena, since these problems require minimal dissipation and dispersion errors in the wave propagation. Constructing structure preserving numerical discretizations is, however, complicated, since there are many, often conflicting, constraints that the numerical discretization must satisfy. In order to support the development of structure preserving numerical discretizations we recently studied the Hamiltonian and Dirac structure of the compressible Euler equations. In particular, the use of a Dirac structure opens novel ways to construct energy preserving finite element discretizations and is an important research topic also when coupling disparate systems. Using a variational principle we also constructed a structure preserving numerical discretization for nonlinear free surface waves in inviscid fluids. The computation of these waves requires moving meshes that follow the free surface motion, which makes it hard to ensure long time stability. The novel numerical discretization we developed has a bounded variation in energy, no numerical dissipation of the wave height and can compute wave interactions and spectra with great accuracy.

Figure: Measured and computed spectra of wave height in a model basin.

HIGHLIGHTED PUBLICATIONs: [1] M. Polner, J.J.W. van der Vegt, A Hamiltonian vorticity-dilatation formulation of the compressible Euler equations, Nonlinear analysis: theory, methods & applications 109 (2014) 113-135. [2] E. Gagarina, V.R. Ambati, J.J.W. van der Vegt, O. Bokhove, Variational space-time (dis)continuous Galerkin method for nonlinear free surface water waves, Journal of Computational Physics 275 (2014) 459-483.

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[highlights] Prof. dr. Han J.G.E. Gardeniers

The research of the Mesoscale Chemical Systems (MCS) group focuses on the themes

"Research on electricity-driven activation

Alternative activation mechanisms for chemical process control and process intensi­fi­

mechanisms, using electricity from

cation and Miniaturization of chemical analysis systems. A special interest is in the use of

renewable energy sources, is a core activity.

3D advanced additive manufacturing and nanomachining methods for functional meso­

Combined with downscaling and integration

scale metamaterials for chemical process engeneering, biochemistry and sustainable

of unit chemical operations, enhanced yield

energy. New concepts for activation of chemical reactions, for example, ultrasound and

and selectivity of chemical reactions and

electrical fields, are applied to intensify chemical processes and achieve more sustainable

product purification, and improved analysis

routes for chemical processing. An example is solar-to-fuel conversion, in which solar light,

of mass-limited chemical and biological

via electrons and surface electrochemistry, is used to generate hydrogen gas. Activities in

samples is achieved."

this area are growing, e.g. via the introduction of novel light-harvesting nanostructures.

Mesoscale Chemical Systems Chatting with neurons The ERC Starting Grant "MESOTAS", which was awarded to Regina Luttge in 2011, deals with a novel approach to study neurophysiologic responses of neuronal tissue in vitro, using nanotechnology, tissue engineering, microfluidics and neuroelectrophysiology. Within this project the PhD student Bart Schurink has developed a microfluidic platform to culture and nurture neuronal cells, with the final goal to connect the cells electronically, for neuroelectrophysiological studies at the single cell level. As part of this study, a sieve-structure is developed enabling hydrodynamic capturing of cells in micron-sized pyramidal pores. These sieve-structures with a surface Figure 1: SEM images taken from the topside of the sieve-

area of several square millimetres, featuring highly uniform pores and apertures, are fabricated by means of UV-photolithography

structure featuring pyramidal shaped pores with their

and wet chemical etching in {100}-silicon. Once the pores are provided with electrodes, a high number of cells can be captured

apertures and electrodes and connecting wires.

and electrophysiological measurements of established neuronal networks can be performed. In the fabrication process, the corner lithography concept was applied to ensure pore and aperture uniformity, which was previously developed by Erwin Berenschot when he was a member of the TST group at MESA+. The work on the sieve-structure was presented at the Micro Nano Engineering conference in Lausanne, and was later published in a more complete form in the journal Microelectronic Engineering.

Figure 2: SEM images taken from the backside of the sievestructure featuring highly uniform apertures.

HIGHLIGHTED PUBLICATIONS: [1] B. Schurink, J.W. Berenschot, R.M. Tiggelaar, R. Luttge, Anisotropic wet etching of highly-uniform silicon sieves combining fractal etching and optimized back-etch processing, Oral presentation at 40th Micro Nano Engineering Conf. Lausanne, Switzerland, 25 September 2014. [2] B. Schurink, J.W. Berenschot,

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R.M. Tiggelaar, R. Luttge, Highly uniform sieving structure by corner lithography and silicon wet etching, Microel. Eng. 144 (2015) 12-18.

[HIGHLIGHTS] The Multiscale Modeling and Simulation group (MMS) focuses on the development and application of computational models for complex physics acting simultaneously at micro- and macro scales. We develop

Prof. dr. ir. Bernard J. Geurts

methods for partial differential equations from a fundamental and an

"Multiscale simulations

and phase transitions, (b) biomedical flows and tissue engineering, (c)

open new worlds of

self-organizing nano systems and new materials for energy applications,

understanding and

supported by research in (i) space-time parallel simulation, (ii) immersed

application in science and

boundary methods, (iii) compatible finite volume and spectral element

technology."

discretization.

applied perspective. Main application areas are in (a) multi-phase flows

Multiscale Modeling and Simulation Phase transition increases heat transfer These days there is a growing need for a fundamental understanding of heat transfer in combination with fluid flow. Through the intensification of processes and miniaturization of devices one may encounter situations in which heat is generated in very small volumes. A prime example is the central processing unit (CPU) in our computers. As part of the ‘DROP’ program at FOM, research was done on the role of phase transition in relation to the efficiency with which heat can be transferred between a hot and a cold region. Specifically, attention was given to a generic system of dispersed water droplets in a turbulent flow of air, acting as so-called carrier gas. The flow is between two parallel plates, one of which is at a higher temperature than the other. We developed and adopted Computational Fluid Dynamics (CFD) methods specifically tailored to turbulent flow at low compressibility. By allowing sufficient spatial and temporal resolutions all dynamically relevant scales of the flow can be simulated, thereby providing a wealth of highly detailed information about the flow with which macroscopic transport characteristics can be predicted and their dependence on process conditions understood. Turning to heat transfer of dispersed multiphase flow we could identify the various mechanisms that contribute to it and compute the relative importance of turbulence, and the exchange processes between the individual droplets and the carrier gas. Because of the turbulent character of the flow the droplets have the tendency to reside at higher concentration close to the walls – this influences the heat transfer efficiency considerably as a region of relatively higher water content forms on average, thereby enhancing the local conduction. The direct numerical simulations also established further gain in efficiency of heat transfer due to evaporation and condensation of water vapor from or onto the droplets. Through evaporation and condensation there is additional exchange of water vapor with the flow, contributing to the heat transfer, e.g., via the release/uptake of latent heat associated with the transition from liquid to vapor. Such computational investigation may lead to a better understanding of

Figure: Snapshot of the gas temperature in a turbulent

mechanisms of heat transfer in the context of turbulent flow and ultimately contribute to the design of new devices.

channel flow ranging from cold (blue) to warm (red) with small droplets seen at locations indicated by the black dots within the channel.

HIGHLIGHTED PUBLICATION: A. Bukhvostova, E. Russo, J.G.M. Kuerten, B.J. Geurts, Comparison of DNS of compressible and incompressible turbulent droplet-laden heated channel flow with phase transition, International Journal of Multiphase Flow 63 (2014) 68-81.

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[highlights] The Molecular nanoFabrication (MnF) group, headed by Prof. Jurriaan Huskens, focuses on nano­ chemistry and self-assembly. Key research elements are: supramolecular and monolayer chemistry at interfaces, multivalency, supramolecular materials, biomolecule assembly and cell patterning, nanoparticle assembly, soft and imprint lithography, chemistry in microfluidic devices, and multistep

Figure 1: (a) Schematic representation of the experimental

Prof. dr. ir. Jurriaan Huskens

integrated nanofabrication schemes. Application areas are: chemical and biosensing, tissue engineering,

"Molecular nano­

electronic devices. The group has several collaborations within MESA+, e.g. on the assembly of proteins

Fabrication: assembling

and cells on patterned surfaces (with the DBE group) and on nanoelectronic and spintronic devices (with

the future of molecular

the NE group). Furthermore, the group actively participates in the Twente Graduate School program

matter!"

Novel NanoMaterials, and in the national programs NanoNext, BMM and Towards BioSolar Cells.

heavy metal waste handling, catalysis and synthesis, solar-2-fuel devices, and nano-, spin- and flexible

setup. (b) Photograph of the experimental setup, with (below) the electrode design.

Molecular nanoFabrication On-chip electrophoresis in supported lipid bilayer membranes achieved using low potentials Surface gradients show a gradually changing chemical or physical parameter along a surface. Such surfaces are important for studying dynamic molecular recognition effects as well as the response of cells to varying chemical cues. Creating gradients in supported lipid bilayers (SLBs) provides additional benefits such as a good control over nonspecific adsorption and the dynamic control over the gradient. In two recent papers, we have shown, in collaboration with the BIOS and DBE groups, the formation of gradients in SLBs using potentials below that of the splitting of water [1] and the dynamic control over gradients using the fluid-gel transition of the main lipid used in the SLBs [2]. The system consists of patches with an SLB, positioned between microelectrodes on a small glass plate, assembled within a microfluidic device (see Figure 1). By setting up an electrical field across the electrodes, a minority of charged lipids, here equipped with a fluorescent dye, is pulled toward one of the electrodes and forms a gradient. The main novelty here [1] is the use of microelectrodes and a redox couple to create a stable electrical field at low ionic strength, both of which enable the gradient formation at potentials well below the water splitting potential (which causes unwanted pH effects). Potentials as low as 250 mV have been shown to result Figure 2: (a) 3D fluorescence microscopy image of electro­

in well-formed gradients (see Figure 2). In a follow-up study, a base lipid with a gel transition temperature above room temperature

phoretic build-up of a gradient of a dye-containing lipid in

was used, which allows fixation and further chemical functionalization of the established gradient at room temperature [2].

a supported lipid membrane after applying 1 V for 20 min. Corresponding 2D fluorescence microscopy images are shown at time points 0 and 20 min. (b) Graph showing the relative dye fluorescence intensity for different potentials. Inset shows reversal of the direction of electrophoretic migration by reversing the polarity of the electrodes.

HIGHLIGHTED PUBLICATIONS: [1] J. van Weerd, S.O. Krabbenborg, J. Eijkel, M. Karperien, J. Huskens, P. Jonkheijm, Fast On-Chip Electrophoresis in Supported Lipid Bilayer Membranes Achieved Using Low Potentials, Journal of the American Chemical Society 136 (2014) 100-103. [2] S.O. Krabbenborg, J. van Weerd, M. Karperien, P. Jonkheijm,

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J. Huskens, Locked-in biomimetic surface gradients that are tuneable in size, density and functionalization, ChemPhysChem 15 (2014) 3460-3465.

[HIGHLIGHTS] The group Multi Scale Mechanics (MSM) studies fluids and solids, as well as granular systems, where various physical phenomena with different characteristic time- and length-scales are taking place simultaneously. At each length scale, the question arises how the mechanics and physics at that level are determined by the properties of the underlying level, and how, in turn, the current level affects the next level. Micro-Macro theory is one way to predict and describe this hierarchy, and advanced

Prof. dr. Stefan Luding

numerical simulations supported by experiments and theory help us understand the

“How does contact mechanics at the

various levels and their couplings and solve many application problems in industry

nano-scale determine macroscopic flow

and environment, as e.g. related to segregation and mixing in the presence of strongly

properties of granular matter?”

different sized particles.

Multi Scale Mechanics

Figure 1: FESEM image of a borosilicate glass microsphere in a rail-structured Si surface. The rail system was prepared by

Nano-contact mechanics for rolling, sliding & torsion of silica particle surfaces

a focused ion beam. Sphere positioning was realised by AFM. To measure rolling and torsion friction, the particle is pushed down by a flat nano-indenter which is then displaced laterally

Granular materials research considers interactions between micron-sized particles; however contact mechanics occurs on much

along the rail.

smaller scales, i.e. contact areas of a few nano-meters. For example, almost all surfaces found in nature are observed to be rough at nano-scale. This roughness influences the adhesion as well as the frictional behaviour: During the relative motion of a particle contacting a surface, frictional forces are significantly affected by the adhesion on the individual surface asperity level. A fundamental understanding of these nano-contact mechanics is crucial to being able to predict macroscopic flow in applications as e.g. avalanches. We apply the concept of a colloid probe technique, which is well established in the AFM community, to a nanoindenter setup. The feasibility of the concept is shown by studying the sliding, rolling and torsion friction of silica microspheres on a flat silicon substrate as well as in a rail structure (see Figure 1). A well-controlled modification of the roughness of the contact partners allows for an evaluation of the impact on the contact.

A statistical description (Master equation) for force distributions in soft particle packings Effects on the contact-scale are present in quasi-static deformations of particle packings with their complex networks of force-chains

Figure 2: (Right top) The Delaunay triangulation of soft

(see Figure 2). Since any macroscopic quantity (e.g. stress, elastic moduli, etc.) can be defined as statistical averages in force-chain

particle packing. The red edges connect the particles in

networks, their non-trivial responses to quasi-static deformations are governed by the changes of the force distributions. Taking

contact, i.e. represent a force-chain network, where each

into account not only forces, but also inter-particle gaps between neighbouring particles, we propose a complete Master equation

width is proportional to the strength of contact force. The

for the force distributions, where numerically determined transition rates unveil striking insights into the rearrangements of force-

blue edges connect the nearest neighbors without contact,

chain networks during relaxation. Non-affine deformations are omnipresent, however, the contacts deform in an uncorrelated way,

i.e. show a virtual-contact network. (Left bottom) A spatial

whereas the gaps display mostly affine, but strongly correlated random changes with huge fluctuations. Numerical solutions are well

distribution of non-affine displacements during the relaxation

validated by macroscopic responses so that our Master equation is an useful "micro-stochastic model" for soft particle packings.

after isotropic compression.

HIGHLIGHTED PUBLICATIONS: [1] R. Fuchs, T. Weinhart, J. Meyer, H. Zhuang, T. Staedler, X. Jiang, S. Luding, Rolling, sliding and torsion of micron-sized silica particles: experimental, numerical and theoretical analysis, Granular Matter 16 - 3 (2014) 281-297. [2] K. Saitoh, V. Magnanimo, S. Luding, A Master equation for the probability distribution functions of forces in soft particle packings, Soft Matter 11 (2015) 1253.

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[highlights] The research group Membrane Science & Technology (MST) focuses on the multi-disciplinary topic of membrane science and technology for the separation of molecular mixtures and selective mass transport. We aim at designing polymer membrane chemistry, morphology and structure on a molecular level to control mass transport phenomena in macroscopic applications. We consider our expertise as a multidisciplinary knowledge chain ranging from molecule to process. The research program is divided into three application clusters: Energy, Water and Life Sciences. The group consists of three separate entities: the academic

Prof. dr. ir. Kitty Nijmeijer

research groups Membrane Science and Technology (MST) and Advanced Membranes for

“Molecular membrane design to

Aqueous Applications (AMAA) and the European Membrane Institute Twente (EMI), which

control mass transport.”

performs confidential contract research directly with the industry.

Membrane Science and Technology Performance and plasticization behavior of polymer-MOF membranes for gas separation Figure 1: SEM images of cross section of mixed matrix membranes with different MOFs: a) 30 wt.% MIL-53(Al),

Mixed matrix membranes (MMMs) based on three distinctively different Molecular Organic Frameworks (MOFs), i.e. MIL-53(Al)

b) 30 wt% ZIF-8, c) 20 wt% Cu3(BTC)2, d) 30 wt% Cu3(BTC)2.

(breathing MOF), ZIF-8 (flexible MOF) and Cu3BTC2 (rigid MOF) dispersed in the polymer membrane matrix Matrimid®-PI have been

Magnification: a and b = 3000x; c and d = 1500 x).

investigated. MOF loading was varied between 0 wt% to 30 wt%. The fabricated MOF-MMMs were characterized for pure and binary gas mixture separations at low and high pressures and their performance in terms of CO2 permeability and CO2/CH4 selectivity was evaluated. The use of a less volatile co-solvent, optimized priming protocol to prepare the MMMs and thermal annealing resulted in a good dispersion of MOF particles in the Matrimid®-PI matrix. Incorporation of MOFs resulted in increased density, Tg and improved degradation behavior of the membranes confirming a good compatibility between the polymer and the MOFs. Low pressure gas separation showed moderate enhancement in CO2 permeability and CO2/CH4 selectivity of MOF-MMMs compared to native polymer membranes, but the improvement becomes pronounced at high pressures. At high pressures, the native Matrimid®-PI membrane showed typical plasticization behavior visible as a strong decrease in selectivity at higher pressures. In the developed MMMs, MOF particles limit the mobility of polymer chains thus suppressing CO2 induced plasticization and maintaining large separation factors over a wide pressure range investigated. The respective increase in performance of MMMs is very much dependent on MOF crystal structure and its interactions with CO2 gas molecules. Among the three MOF-MMMs, membranes based on Cu3BTC2 showed highest selectivity while ZIF-8 based membranes showed highest permeability. In general it can be concluded that the high CO2 permeability and CO2/CH4 selectivity of MMMs is the combined effect of an increased sorption and diffusion selectivity and reduced plasticization. Overall, this work reveals that MOF-MMMs delay CO2 induced plasticization and show good separation performance even at high pressures, showing their potential to a wide range of newly emerging high pressure energy applications.

Figure 2: Mixed CO2/CH4 selectivity as a function of the feed pressure for the developed MOF-Matrimid membranes.

HIGHLIGHTED PUBLICATION: S. Shahid, K. Nijmeijer, Performance and plasticization behaviour of MOF-polymer membranes, Journal of Membrane Science 470 (2014)

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166-177.

[HIGHLIGHTS] Prof. dr. G. Julius Vancso

Current efforts in the Materials Science and Technology of Polymers (MTP) group revolve around

“Natural polymers, such as DNA,

platform level research in macromolecular nanotechnology and polymer materials chemistry.

proteins and polysaccharides enable

The applications are realized in collaborations with specialized teams. Ongoing projects aim at

life. Without synthetic polymers

controlled synthesis of stimulus responsive, “smart” polymers and novel organometallic poly­

industrialized societies could not

mers, as well as fabrication of complex macromolecular architectures in combination with nano­

exist. Soft matter nanoscience

particles, and semiconductor nanocrystals. Smart, designer surfaces are obtained by surface

and materials chemistry form the

initiated polymerizations and by electrostatic assembly. The structures obtained are used in tissue

scientific basis for these fields,

engineering scaffolds for regenerative medicine, at interfaces that exhibit low protein adhesion to

and provide exiting research

prevent marine biofouling, in fluidic devices as pumps, valves, sensors, and in catalysis. Sensing

opportunities for our group.”

and delivery of molecules are pursued by intelligent nano-hydrogels. The development of enabling tools such as scanning probe microscopes, complement this effort.

Materials Science and Technology of Polymers Smart microporous organometallic polymer membranes The next generation of materials will be incorporated in complex, integrated structures, will have well-defined functions, and will also be “smart”, i.e. adoptive and responding to variations taking place in the surroundings in a well-defined way. This perception has been driving materials research of stimulus responsive systems. In our effort to explore unconventional stimuli, that are compatible with nanotechnology (i.e. stimuli can address matter at the nanoscale), we focus on redox responsive organometallic macromolecules. Redox stimuli are nanotechnology compatible, as we can now make electrode systems and nano-electrochemical cells that have

Figure 1: Polyionic structures, including the membrane-

dimensions typical for macromolecules (i.e. in the 10 nm range) and thus we can electrochemically address single polymers.

forming, ferrocene-containing polyionic liquid, used for the preparation of stimulus-responsive, smart membranes.

In 2014 the group has developed a microporous membrane, consisting of a stimulus responsive organometallic polymer and polyacrylic acid (mixed with a small anionic molecule to promote pore formation), which expands and shrinks reversibly upon oxidation/reduction. The key ingredient for the responsive behavior was the organometallic polyionic liquid based on an imidazole functionalized poly(ferrocenylsilane) (Scheme 1a). The membrane changes also its color when oxidized/reduced (see Scheme 1b) allowing for a visual assessment of the state of oxidation. Applications can be wide-ranging, including separations, sensors, and in catalysis for metal nanoparticle loaded membranes. The article was chosen as “very important paper” in the journal Angewandte Chemie International Edition.

Figure 2: Variation of the redox state of ferrocene reversibly increases and decreases the pore size and color of the membrane (schematic structure and SEM image).

HIGHLIGHTED PUBLICATION: K. Zhang, X. Feng, X. Sui, M.A. Hempenius, G.J. Vancso, Breathing pores on command: Redox responsive spongy membranes from poly(ferro­ cenylsilane)s, Angewandte Chemie International Edition 53 (50) (2014) 13789-13793.

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[highlights] Prof. dr. Mireille M.A.E. Claessens

The Nanobiophysics group (NBP) aims at understanding the physical principles underlying

“Understanding the physical

does not only give us insight into disease mechanisms, it also inspires the design of bio-based

principles underlying the organization,

materials. Our current research efforts focus on the self-assembly of proteins into fibrils and

dynamics and physicochemical

networks. We are intrigued by the use of amyloid protein fibrils in biological materials and in

properties of complex biological

the role of similar aggregates in neurodegenerative diseases. To get insight into functional

materials will give us insight into

and disease related protein aggregation we develop cutting-edge technologies that enable

disease mechanisms, and inspire

us to visualize and manipulate molecules at the nanoscale. We use the nanophotonics to

the rational design of bio-based

manipulate biological fluorophores. Functional imaging, involving quantitative measurements

materials.”

of dynamic biophysical processes at high resolution is an integral part of our work.

the organization and dynamics of complex biological materials such as cells. This approach

NanoBioPhysics Self-assembly bridging the nano- and mesoscale Figure 1: Schematic of the self-assembly and organization of

Although their role in disease is debated, the self-assembly of proteins into aggregates of amyloid fibrils is a characteristic feature

the protein -synuclein across length scales.

of protein aggregation diseases such as Parkinson’s disease. Additionally amyloid fibrils are much used as a building material in nature. Their stability against mechanical stress or chemical degradation makes them valuable components of insect eggs while the multivalent binding sites on the fibril contribute to the adhesive properties of bacteria. To obtain a better understanding of protein aggregation diseases and to be able profit from the advantageous properties of amyloids to construct materials that are ordered at both the nano- and microscale, a better understanding of the interactions driving the multiscale self-assembly is required. Recently we have shown that nanometer-sized -synuclein amyloid fibrils self-assembly into well-defined micrometer-sized suprafibrillar aggregates. The fibrils organize in thin sheets or swollen gel like particles with morphologies that depend on the ionic strength and pH of the solution. In contrast to higher order structures formed by other negatively charged biopolymers, multivalent ions are not required for the supra-fibrillar aggregates to form. Their formation is induced by both mono- and divalent counterions. The self-

Figure 2: Supra-fibrillar -synuclein aggregates

assembly process is not mediated by protein-specific interactions but rather by the cooperative action of long-range electrostatic

with different morphology. (A) Phase contrast and (B)

repulsion and short-range attraction. In protein aggregation diseases the formation of supra-fibrillar amyloid structures may therefore

fluorescence images of cylindrical -synuclein aggregates

be unavoidable once fibrils are formed.

formed at 100 μM protein concentration, 2 mM CaCl2, 10 mM Tris buffer, pH = 7.4, 37 °C, and in the presence of 5 μM thioflavin T. (C) Phase contrast image of disk shaped fibrillar aggregates formed at 100 μM  S, 2 mM citric acid, pH 4.3 and in the absence of added salt. Scale bars are A, B) 50 μm and C)100 μm.

HIGHLIGHTED PUBLICATION: S.A. Semerdzhiev, D.R. Dekker, V. Subramaniam, M.M.A.E. Claessens, Self-assembly of protein fibrils into suprafibrillar aggregates:

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Bridging the nano- and mesoscale, ACS Nano 8 (2014) 5543-55513.

[HIGHLIGHTS] Prof. dr. ir. Wilfred G. van der Wiel

The Chair NanoElectronics (NE) performs research and provides education in the field of nano­

“Nanoelectronics

synergetically combining aspects of Electrical Engineering, Physics, Chemistry, Materials Science, and

is where electrical

Nanotechnology. NE consists of more than 30 group members and is actively looking for people to join.

engineering,

The field of nanoelectronics comprises a mix of intriguing physical phenomena and revolutionary

physics, chemistry,

novel concepts for devices and systems with improved performance and/or entirely new functionality.

materials science

NE has some dedicated infrastructure including MBE deposition, scanning tunneling microscopy,

and nanotechnology

cryogenic measurement systems down to temperatures of 10 mK in combination with magnetic fields

inevitably meet.”

up to 10 tesla.

electronics. Our research involves hybrid inorganic-organic electronics, spin electronics and quantum electronics. The research goes above and beyond the boundaries of traditional disciplines,

NanoElectronics Figure 1: Schematic top view (top), cross section (middle) and

Ambipolar silicon quantum dots for future “quantum CMOS” technology

AFM image (bottom) of an ambipolar device. Depending on the operation regime, either an electron or a hole quantum dot is formed underneath the bottom gate.

Spin qubits in coupled quantum dots (QDs) are promising for future quantum information processing (QIP). A quantum bit (qubit) is the quantum mechanical analogon of a classical bit. In general, each quantum mechanical two-level system can represent a qubit. For the spin of a single charge carrier e.g., which is a natural two-level system, the basis quantum states are given by the spin-up and the spin-down state. QIP based on the spin degree of freedom requires long spin coherence times. Silicon provides an environment where spins can be controlled with minimal decoherence because of the weak hyperfine and spin-orbit interaction. So far, most experiments have focused on electron spins, but hole spins offer great potential for spin-based QIP as well. A hole-spin qubit in silicon can benefit from its finite spin-orbit coupling, because it allows efficient electric-field driven spin resonance applicable via local gate electrodes. However, it is still unclear whether the electron spin or the hole spin is most suitable as a qubit. We have developed an ambipolar MOSFET-based device that allows the electron and the hole transport regime to be compared in one and the same nanostructure (see Figure 1). A top gate overlaps n++ and p++ implanted regions on the source and the drain side. Depending on the applied top gate voltage V L, a two-dimensional electron or hole gas is formed at the Si/SiO2 interface. We locally control the charge density by an additional bottom gate. Non-linear transport measurements show single-charge transport through a QD created underneath the bottom gate (see Figure 2). The same charging energy and capacitances of the last charge transition in both regimes indicate that we load the same QD with either an electron or a hole. Ambipolar QDs with single-charge occupancy can break new ground in spin-based QIP, since they have the potential to act as a qubit comparator where the suitability of electron-spin and hole-spin qubits can be evaluated in the same crystalline environment. Taking the advantages of either qubit one could think

Figure 2: Non-linear transport measurements show single-

of future “quantum CMOS” technology based on ambipolar QDs.

charge transport through the same quantum dot evidenced by the same electrostatics of the last charge transition in the electron and the hole regime.

HIGHLIGHTED PUBLICATION: F. Mueller, G. Konstantaras W. G. van der Wiel, F. A. Zwanenburg, Single-charge transport in ambipolar silicon nanoscale field-effect transistors, Applied Physics Letters 106 (2015) 172101.

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[highlights] Prof. dr. Serge J.G. Lemay "The physics of ions in liquid are directly relevant to a surprisingly wide array of research areas of current scientific and

The goals of the group Nanoionics (NI) are to add to the fundamental under­

societal interest. These include nanoscience

standing of electrostatics and electron transfer in liquid, and to explore concepts

(the ‘natural’ length scale for ions), energy

for new fluidic devices based on this understanding. Our experimental tools,

(fuel cells, supercapacitors), neuroscience

which are largely dictated by the intrinsic nanometer scale of the systems that

(signal transduction, new experimental

we study, include scanning probes, sensitive electronics, and lithography-based

tools), and health and environment

microfabrication. Through its focus on nanoscience and its multidisciplinary

monitoring (new and better sensors)."

nature, this research is a natural fit for MESA+.

NanoIonics Near wall effects in nanoconfined ionic liquids Ionic liquids are solvent-free liquid electrolytes that can be used for energy storage through charge separation. However, charged substrates lead to near-wall structure that impedes the charging dynamics. For the first time we separately measured the conservative and dissipative components of the liquid-wall interaction using small amplitude force-distance spectroscopy. The final layer of cations on a mica wall – essential to screen out the wall charge – behaves solid-like, whereas the layers slide against each other with more friction as their order is increased. These results represent the first stage of a new research line on ionic liquids within NI.

Figure: Resistance to squeeze out the ionic liquid [Emim]+[BF4]- confined between an AFM tip and a mica wall.

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HIGHLIGHTED PUBLICATION: J. R. T. Seddon, Conservative and dissipative interactions of ionic liquids in nanoconfinement, J. Phys. Chem. C 118 (2014) 22197-22201.

[HIGHLIGHTS] Fluid flow on the nanoscale is fundamentally different from fluid flow on the microscale because the extreme confinement causes another set of forces to become dominant. In the Nano­fluidics for Lab on a Chip Appli­ cations group we explore the fundamentals of nano­ scale fluid behaviour and apply the knowledge gained

Prof. dr. Jan Eijkel

to subjects ranging from green energy generation to

"The Nanofluidics for Lab on a Chip Applications

metal nanoparticle-assisted nanopore fabrication and

group aims to perform innovative fluidic research

from innovative separation methods to point of care

for biomedical and energy applications."

diagnostics.

Nanofluidics for Lab on a Chip Applications Blue energy Figure 1: Artists impression of the ballistic energy conversion

The strong demand for renewable energy promotes research on novel methods and technologies for energy conversion. We built

system. The kinetic energy of fast-moving charged

an energy conversion system that is based on a water microjet and that provides conversion efficiencies of mechanical to electrical

microdroplets is converted to electrical energy when the

energy of up to 48%. The system is extremely simple as it contains no moving parts, consisting solely of a membrane with a single

droplets deposit their electrical charge at the high potential of

micropore through which water is pumped and a metal target. When the water leaves the pore it forms a microjet which breaks

the target, being decelerated on their trajectory.

up into microdroplets. At breakup the droplets move with a velocity of 10 m/s and thus carry a high kinetic energy. Electrical charge is imparted to the microjet and hence to the droplets by passive electrostatic induction using a metal gate ring around the microjet. When the droplets reach the metal target which is located at a distance of 1 cm, we find their velocity is reduced to 0 m/s. This extreme deceleration (1000g) is caused by the force of the electrical field originating from the metal target which has become charged by droplet impact, that acts on the charged droplets. Summarizing the mechanism, droplet kinetic energy is converted to electrical energy (‘ballistic conversion’) when charged droplets move in the electrical field generated between membrane and target. Since frictional losses can be limited, the efficiencies obtained are by far the highest for any published electrokinetic conversion system. We demonstrated conversion efficiencies of up to 48%, a power density of 160 kW/m 2 and both high- (20 kV) and low- (500 V) voltage operation. Besides offering striking new insights, the device potentially opens up new perspectives for lowcost and robust renewable energy conversion. Figure 2: 2 The efficiency of the conversion of mechanical energy (pressure*flow rate) into electrical energy (target voltage*current) as a function of the voltage applied to the microjet gate. Pore diameter 30 μm, average flow rate 6.55 μl/s, solution 10 mM KCl, load resistance 1 TΩ, applied pressure 1.38 bar, target distance 2.5 cm.

Highlighted publication: Y. Xie, D. Bos, L.J. de Vreede, H.L. de Boer, M. van der Meulen, M. Versluis, Ad J. Sprenkels, A. van den Berg, J.C.T. Eijkel, High-efficiency ballistic electrostatic generator using microdroplets, Nature Communications 5 (2014) 3575.

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[highlights] Optical Sciences (OS) is a dynamic and multidisciplinary research group, whose infrastructure and expertise ranges from near-field probing of (single) molecules and materials through nonlinear spectroscopy and imaging to nanostructure fabrication and ultrafast laser spectroscopy.

Figure 1: Competition between light-induced processes in

Prof. dr. Jennifer L. Herek

The addition of integrated optics research extends fundamental science

“Fundamental research in

include improving the efficiency of solar-driven photovoltaic and photo­

spectroscopy and imaging

catalytic devices, chemically-selective imaging in biololgy, medicine and

shines light on innovation and

pharmacology, and novel optical antennas based on strongly coupled

technology.”

plasmonic nanostructures.

to new techniques and devices for health, energy, and water. Applications

Optical Sciences

a H2 evolving photocatalyst [1]. The green structures are ligands (triangles: peripheral, rectangle: bridging ligand).

Competition of ultrafast processes in photocatalysis The state-of-the-art design approach of a molecular photocatalyst is based on coupling a transition metal-ligand photosensitizer via a bridging ligand to a catalytically active metal atom like Pd. Absorption of a photon excites an electron from the transition metal center to one of the ligands. Key parameters for efficient solar-to-fuel conversion are long-lived (>μs) charge separation and directionality of charge transfer towards the catalytic site. The ultrafast light-induced processes in a H2 evolving photocatalyst have been studied by femtosecond transient absorption spectroscopy and time-resolved photoluminescence [see Figure 1]. Upon excitation all ligands are populated; in time electron density moves from the peripheral ligands towards the bridging ligand, which process is though competing with vibrational relaxation. A next step will therefore be to tune the relative excited state energy levels to make the inter-ligand electron transfer process more competitive.

20 dB net gain in an on-chip Er 3+ doped Al 2O3 spiral waveguide amplifier Spiral-waveguide amplifiers in erbium-doped aluminum oxide on a silicon wafer were fabricated and characterized [see Figure 2]. The effect of erbium concentration on the maximum achievable net gain was investigated for spirals of different lengths. A maximum internal net gain of 20 dB in the small-signal-gain regime was measured at the peak emission wavelength of 1532 nm for two sample configurations with waveguide lengths of 12.9 cm and 24.4 cm and concentrations of 1.92 × 1020 cm-3 and 0.95 × 1020 cm-3, respectively. An amplifier noise figure of 3.75 dB was determined in the small-signal-gain regime. Positive net gain was measured in the saturatedgain regime in the range of launched signal powers of 10 -3−10 -1 mW. Figure 2: Image of the green up-conversion luminescence on a pumped spiral amplifier [2].

HIGHLIGHTED PUBLICATIONS: [1] Q. Pan, F. Mecozzi, J.P. Korterik, D. Sharma, J.L. Herek, J.G. Vos, W.R. Browne, A. Huijser, Directionality of Ultrafast Electron Transfer in a Hydrogen Evolving Ru−Pd-Based Photocatalyst, J. Phys. Chem. C 118:20799 (2014). [2] S.A. Vázquez-Córdova, M. Dijkstra, E.H. Bernhardi, F. Ay, K. Wörhoff, J.L. Herek,

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S.M. García-Blanco, M. Pollnau, Erbium-doped spiral amplifiers with 20 dB of net gain on silicon, Opt. Express 25993-26004 (2014).

[HIGHLIGHTS] Manipulating fluids and interfaces from the nano- to the microscale The goal of the Physics of Complex Fluids (PCF) group is to understand and control

Prof. dr. Frieder Mugele

the physical properties of liquids and solid-liquid interfaces from molecular scales

“Nanoscience and -technology are

up to the micrometer range. We are particularly interested in i) (electro)wetting

characterized by large surface-to-volume

& microfluidics, ii) nanoscale properties of confined fluids, and iii) soft matter

ratios. At PCF, we develop strategies to

mechanics. Our research connects fundamental physical and chemical phenomena in

understand and manipulate complex fluid

interface science, adsorption at interfaces, nanofluidics, static and dynamic wetting,

flows on the micro- and nanometer scale

superhydrophobicity, microfluidic two-phase flow, drop impact, and drop evaporation

using various controls of wetting behavior

to practically relevant applications including enhanced oil recovery, photocatalysis,

including in particular electrowetting.”

lab-on-a-chip systems, optofluidics, inkjet printing, and immersion lithography.

Physics of Complex Fluids A deep look into the Stern Layer The charge of solid-liquid interfaces is crucial to a large variety of physicochemical phenomena and processes, including colloidal stability/self-assembly, electrokinetic phenomena, photocatalysis, energy storage in supercapacitors, oil recovery, water desalination etc. While studies of solid-electrolyte interfaces date back to the early 20th century, a detailed picture of the structure of the electric double layer has remained elusive, largely because experimental techniques have not allowed direct observation of the behaviour of ions with sufficient, i.e. subnanometer, resolution. Making use of recent advances in Atomic Force Microscopy (AFM) with atomic level precision, we measured the local surface charge and revealed the ordered adsorption of mono- and divalent ions that are common in natural environments at heterogeneous gibbsite/silica surfaces in contact with aqueous electrolytes, see figure. AFM images reflect the solvation structure of the interfacial liquid and the structure of the ions adsorbed in the Stern layer. Unlike Na+ and K+ ions, divalent ions like Ca2+ and Mg2+ modify and fully define the interface probed by AFM tip, consequently confirming their absorption to the surface. The experimental results are complemented by density functional theory calculations by our partner M.P. Andersson and S.S Stipp from the NanoGeoScience Center at the University of Copenhagen, Denmark. Together, experiments and simulations

Figure: a) color-coded 2D force field generated from 100

provide a detailed picture of the complex formation of the Stern layer at solid-liquid interfaces involving the adsorption of cations and

tip-sample interaction curves in 20 mM NaCl at pH ≈ 6 (blue:

anions and their hydration shells.

attractive force; red: repulsive force; green: zero force); b) high resolution AFM image of Gibbsite immersed in

We expect that high resolution AFM in ambient liquid will make important contributions to a variety of problems in nanoscience and

various aqueous solutions. Images at 10 and 100 mM CaCl 2

technology at solid-liquid interfaces [2, 3].

show double row structure of adsorbed Ca2+ ions (blue) and alternating bright-faint row structure with co-adsorbed Cl- (yellow) on top of Ca2+; c) equilibrated surface structure calculated by density functional theory showing adsorbed Ca2+ ions (blue) and co-adsorbed Cl- (yellow).

Highlighted publications: [1] I. Siretanu, D. Ebeling, M.P. Andersson, S.L.S. Stipp, A. Philipse, M. Stuart, C. Martien, D. van den Ende, F. Mugele, Direct observation of ionic structure at solid-liquid interfaces: a deep look into the Stern Layer. Scientific reports 4 (2014). [2] K. Wenderich, A. Klaassen, I. Siretanu, F. Mugele, G. Mul, Sorption-Determined Deposition of Platinum on Well-Defined Platelike WO3, Angewandte Chemie International Edition 53 (2014) 12476-12479. [3] F. Mugele, B. Bera, A. Cavalli, I. Siretanu, A. Maestro, M. Duits, M. Stuart, C. Martien, D. van den Ende, I. Stocker, I. Collins, Ion adsorption-induced wettability alteration in oil-water-mineral systems, submitted.

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[highlights] Prof. dr. Guido Mul

The PhotoCatalytic Synthesis (PCS) group develops materials, devices, and processes

“Combining excellent

for light and/or electricity induced chemical conversion. We specialize among others in:

science and engineering in

i) synthesis of (substrate supported) semiconductors, as well as their functionalization

photo- and electrocatalysis

with (plasmonic) metal nanoparticles, ii) (ATR) Infrared spectroscopy to study kinetically

is our ambition, utilizing the

relevant steps in photo- and/or electrocatalytic transformations, iii) high temperature,

state of the art facilities of

high pressure electrochemistry, and iv) design and application of dedicated reactors and

the Nanolab and MESA+

devices to optimize performance. Fields of application we target are: i) storage of solar

institute, as well as the

energy by overall water splitting (producing hydrogen and oxygen), ii) conversion of CO2

currently built high pressure

and H2O producing hydrocarbons, and iii) purification or utilization of waste streams

laboratory.“

(contaminated gas, air, and water).

PhotoCatalytic Synthesis Preferred deposition of metal nanoparticles on semiconductor crystals Figure 1: HR-SEM images of as-synthesized plate-like WO 3

The PCS and PCF groups of the institute have joined forces to investigate the origin of geometrical metal particle distributions when

loaded with Pt particles through photodeposition using

grown on surfaces of well-defined WO3 crystals by photodeposition. We have demonstrated that photodeposition of Pt nanoparticles

H2PtCl6 · 6H2O as a precursor. Positioning of the Pt particles

from PtCl62-solutions on plate-like WO3 crystals preferentially occurs on the small, subordinate facets (see Figure 1). Rather than the

occurs preferably on the edges/smaller facets.

commonly used explanation of preferred deposition by light-induced charge migration, we propose that this phenomenon is due to differences in intrinsic surface charges of WO3 facets exposed to water, inducing preferred dark sorption of PtCl62- on positively charged facets/edges. This conclusion is based on i) (dark) impregnation studies which show Pt deposition also to be facet specific, and ii) aqueous phase Atomic Force Microscopy (AFM) studies which suggest intrinsic surface charges to be in agreement with sorption based Pt distributions (see Figure 2). Using this information, and optimizing pH of photodeposition, we are now able to control the location of metal particle deposition on WO3 crystals, which we anticipate will affect the efficacy of these materials in photocatalytic applications.

Figure 2: Illustration of the charge distribution of plate-like WO 3 as measured by aqueous phase AFM. A mild repulsive force (positive) indicates a mild negative surface charge of large facets of the WO 3 particle (green), whereas an attractive force (negative) represents a positive surface charge (blue). The WO 3 particle was deposited on silica as a support, which was significantly negatively charged (positive, red).

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HIGHLIGHTED PUBLICATION: : K. Wenderich, A. Klaassen, I. Siretanu, F. Mugele, G. Mul, Sorption-directed deposition of Pt on well-defined cuboid-like WO3, Angewandte Chemie International Edition, 53(46) (2014) 12476-12479.

[HIGHLIGHTS] Granular materials, like sand, flour or iron ore, are among the most frequent materials in nature and are the most processed substance in industry, second only to water. Their often-counterintuitive behavior however is distinctly

Prof. dr. Devaraj van der Meer

different from that of molecular matter and remains far from understood. The

"In nature, granular materials are

of experiments, analysis and numerical techniques to attain to a profound

seldomly found in isolation. The

understanding of the physics of granular flow. Special attention is given to

combination of grains and interstitial

unraveling the intricate role of the interstitial fluid, the gas or liquid that

fluid pose many fascinating questions

resides within the pores between the grains. The group is embedded into the

that remain largely unexplored."

Physics of Fluids group.

Physics of Granular Matter and Interstitial Fluids group employs a combination

Physics of Granular Matter and Interstitial Fluids The impact of raindrops on sand

Figure 1: [left] Droplet residue morphology: Doughnut, Truffle, and Pancake. [Right] Profilometer setup with laser sheet and high speed camera. Two laser sheets are used to accurately determine

The impact of a liquid droplet on a layer of grains is amongst the most common and frequent events in nature. This process is vital

the crater shape.

for the formation of landscapes and in the realm of agriculture, where rain-soil interaction governs erosion of soils, influences the concentration of nutrients, and in general lays down many of the necessary prerequisites for vegetation to grow. In addition, droplet impact on granular materials is relevant to industry, e.g., in the process of wet granulation that stands at the basis of the production of many pharmaceuticals. Nevertheless, surprisingly little is known about the physics that governs the impact of a raindrop. Due to the complexity of the dropletsand interaction, experimental results are often counterintuitive and defy explanation. One of the prime examples is the residue that remains inside the crater after impact. This residue that consists of a mixture of water and grains can take the shape of a doughnut, a truffle, or a pancake, but the physics that leads to this large variety in crater morphology remained unexplored (left figure). How does the dynamics of droplet and sand lead to the observed abundance of phenomena and counterintuitive behavior? We performed well-controlled experiments in which we vary both the impact speed and the packing fraction of the sand. We subsequently use high-speed laser profilometry to dynamically measure the impact, the formation of the crater and the creation of the residue (middle figure). From these measurements and a theoretical analysis we were able to identify two time scales that together lead to the observed crater morphology: The first is the duration of the droplet impact and the second is the time the water needs to penetrate into the sand. If the droplet spreads faster than the water is able to penetrate into the sand, the droplet is able to retract under the influence of surface tension and a doughnut or truffle is formed. If the water however enters into the sand during the spreading phase of the

Figure 2: Ratio of the impact and the mixing time as a function

droplet, it is not able to retract and a residue with the shape of a pancake is created (right figure). This happens for higher impact

of velocity. When the ratio is larger than one, the droplet sinks

velocities because the dynamical pressure exerted by the droplet is so large that the liquid is pushed into the sand faster than the

in faster than it can retract and a pancake residue is formed.

droplet is able to spread.

Otherwise we find doughnut and truffle residues.

HIGHLIGHTED PUBLICATION: S. Zhao, R. de Jong, D. van der Meer, Raindrop impact on sand: a dynamic explanation of crater morphologies, Soft Matter, (2015) DOI: 10.1039/ c5sm00957j.

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[highlights] The research field of the Physics of Interfaces and Nanomaterials (PIN) group involves controlled preparation and understanding of interfaces, low-dimensional (nano)structures and nanomaterials. We focus on systems that (1) rely on stateof-the art applications or (2) can potentially lead to future applications. Our

Figure 1: (A) Scanning tunneling microscopy image of a Ge(110) surface. Inset: (16x2) reconstruction. (B) Scanning

Prof. dr. ir. Harold J.W. Zandvliet

research interest is driven by the fact that on a nanometer length scale the

"The physical properties of materials

our research activities is to obtain control over the properties in such a way that

become increasingly exotic as one

we are able to tailor the properties for (device) applications, ranging from nano/

progresses from the three-dimensional

micro-electronics, nano-electromechanical systems and wettability to sustainable

case into lower dimensions."

energy related issues.

material properties depend on size, shape and dimensionality. A key challenge of

Physics of Interfaces and Nanomaterials

tunneling microscopy image of a germanene terminated Ge2Pt cluster (please note that the regularly spaced lines on the cluster are due to the grid IV scan). The height of the cluster

Germanene: a new member of the family of 2D materials

is ~20 nm and the aspect ratio 3:4. (C) Scanning tunneling microscopy image recorded on top of a Ge2Pt cluster (region

In the past decade a new exciting class of materials has been developed, which is not three-dimensional, but only two-dimensional in

i) shown in (B). (D) Line scan taken across the step edges in

nature. Graphene is by far the most famous example of this new class of materials. Graphene exhibits a wealth of exotic and intriguing

(C). (E) IV curves recorded on regions (i) and (ii). Set points:

properties, which has resulted in a myriad of scientific breakthroughs. However, graphene also suffers from a severe drawback: it is

Sample bias -1.0 V and tunneling current 0.5 nA.

gapless, implying that a graphene based field-effect transistor is not within reach. Germanene, the germanium analog of graphene, is in many aspects very similar to graphene, but in contrast to the planar graphene lattice, the germanene lattice is slightly buckled and composed of two vertically displaced sub-lattices [1]. By breaking the sub-lattice symmetry a band gap can be opened resulting in a truly 2D semiconductor. Modern semiconductor-based electronics is in essence two-dimensional since the functionality of electronic devices is mainly governed by what occurs at the interface of the semiconductor. The manipulation of charge carriers and transport at the semiconductor interface/surface is often far from trivial since we have to use bulk semiconductors for the realization of electronic devices. The usage of semiconductors that are two-dimensional in nature would not only make things much easier, but it would also open the door to exciting new physics and applications [2]. In 2014 we managed to synthesize germanene by the deposition of Pt on Ge(110) substrates. After annealing at temperatures of 1100 K three-dimensional eutectic Pt-Ge nanocrystals are formed. The outermost layer of these crystals exhibits a honeycomb structure.

Figure 2: Scanning tunneling microscopy image (4 nm x 4 nm)

The honeycomb structure is composed of two hexagonal sub-lattices that are displaced vertically by 0.2 Å with respect to each other.

of germanene (buckled honeycomb) on a Pt/Ge(110) crystal.

The nearest-neighbor distance of the atoms in the honeycomb lattice is 2.5±0.1 Å, i.e. very close to the predicted nearest-neighbor

The two hexagonal sub-lattices are vertically displaced by

distance in germanene (2.4 Å).

0.2 Å. The nearest-neighbor distance between the atoms is 2.5±0.1 Å, i.e. very close to the predicted germanene nearest-

In 2014 the free FOM programme entitled “2D semiconductor crystals” has been granted.

neighbor distance of 2.4 Å.

HIGHLIGHTED PUBLICATIONS: [1] P. Bampoulis, L. Zhang, A. Safaei, R. van Gastel, B. Poelsema, H.J.W. Zandvliet, J. Phys. Cond. Matter 26 (2014) 442001. [2] H.J.W.

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Zandvliet, Can a silicene transistor be realized?, Nano Today 9 (2014) 691-694.

[HIGHLIGHTS] The work of the Physical and Medical Acoustics group is focused on the interaction of ultrasound and matter. The group works on the physics of micro­

Prof. dr. Michel Versluis

bubbles and nano­droplets used in medical applications, both in imaging and

“Ultrasound: It cannot be seen,

in therapy, and in the physics and control of bubbles and droplets in ultrafast

cannot be felt, cannot be heard,

acoustic microfluidics. The research strategy is a combined fundamental under­

cannot be smelt. But its applications

standing in theory, numerical modeling and experiments down to nanoseconds

are vast and endless and range

timescales, which is then key to new physical insight leading to novel applications

from faster and more detailed inkjet

in nano­medicine and in nano­technology industry. The group is embedded in the

printing to highly efficient local drug

Physics of Fluids group and has established close working collaborations with

and gene delivery in nanomedicine.”

other groups within MESA+.

Physical and Medical Acoustics High-speed imaging at the nanoseconds timescale captures droplets in flight Inkjet printing is the most popular technology for the printing of documents. It offers high-precision and drop-on-demand technology where droplets are produced at the exact moment and position where and when it is needed. Inkjet droplets have a typical diameter of 30 micrometers, about three times as thin as a human hair. Due to the high production rate and the high reproducibility, inkjet printing is also particularly suitable for emerging techniques, such as printed electronics, organic LEDs and 3D printing. Numerical modeling is a powerful tool to design new and complex print heads. The models integrate acoustics and microfluidics and offer physical insight in the drop formation and pinch-off processes and can indicate the presence of potentially disturbing satellite droplets and bubble entrainment. Experimental validation of these models is difficult for a number of reasons, including limited optical access in ink reservoirs and nozzles, but primarily due to the microscopic length scales and nanoseconds timescales of the processes involved. Droplets move with speeds of up to 20 meters per second and it is a real challenge to capture them under the microscope and without motion blur. Here we use a novel powerful illumination technique, termed illumination by laser-induced fluorescence, or iLIF, to capture droplets in flight at 5 nanoseconds timescale. The iLIF technique makes use of incoherent fluorescence illumination instead of laser that would

Figure: Left: First two recordings of the same droplet are

otherwise lead to optical fringes and speckle formation. By recording two detailed images of the droplet in short succession the flow

made, with a delay of 600 ns between the two frames.

of ink within the droplet can be resolved [1]. The obtained velocity profiles are then compared to numerical simulations where we find

Middle: For both images the contour of the droplet is calculated

very good agreement. This work is performed in close collaboration with Océ-Technologies, a global leader in inkjet printing industry.

with subpixel accuracy. Right: The velocity inside the droplet is determined by calculating the displacement of the volume elements. The velocity is represented by the color scale bar.

HIGHLIGHTED PUBLICATIONs: [1] A. van der Bos, M. van der Meulen, T. Driessen, M. van den Berg, H. Reinten, H. Wijshoff, M. Versluis, D. Lohse, Velocity profile inside a piezo-acoustic inkjet droplets in flight: Comparison between experiment and numerical simulation, Phys. Rev. Appl. 1 (2014) 014004; see also: Nature Research Highlights: Fast imaging captures falling droplets. Nature 507 (2014) 142. [2] .
Y. Xie, D. Bos, L.J. de Vreede, H.L. de Boer, M. van der Meulen, M. Versluis, A.J. Sprenkels, A. van den Berg, J.C.T. Eijkel, High-efficiency ballistic electrostatic generator using microdroplets
Nature Commun. 5 (2014) 3575.

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[highlights] Research in the physics of inorganic nanomaterials (PNM) group aims to investigate the fabrication of novel crystal structures in thin films and tries to understand their properties and to find

Prof. dr. ir. Gertjan Koster

new material functionalities. Various thin film fabrication routes

"With state-of-the-art thin

electronic or magnetic properties, preferably in an environment

film technology synthesis at

where the properties are not disturbed by external factors such

MESA+ we can replicate newly

as air exposure. The three focus areas are in situ spectroscopy,

designed materials as well as

meso-scopic thin film properties and the study of thin film growth

design new materials."

mechanisms.

are being explored as well as techniques to probe the intrinsic

Physics of inorganic NanoMaterials Direct structural and spectroscopic investigation of ultrathin films of tetragonal CuO: Six-fold coordinated copper Figure 1: HAADF-STEM images along the [100] direction. A

Many electronic applications, for example novel type solar cells or sensors, require thin film heterostructures, where the relative

tetragonal structure model matching the observations is shown

alignment of the electronic bands of the different materials determines the properties. In metal-oxides, this alignment is determined

on the left side.

by the precise metal coordination with oxygen. Unlike other 3d transition metal monoxides (MnO, FeO, CoO, and NiO), CuO is found in a low-symmetry distorted monoclinic structure rather than the rocksalt structure. Within an international collaboration the growth of ultrathin CuO films on SrTiO3 substrates was studied; scanning transmission electron microscopy, see Figure 1, was used to show the stabilization of a tetragonal rocksalt structure with an elongated c-axis such that c/a~1.34 and the Cu-O-Cu bond angle ~180 º, pointing to metastable six-fold coordinated Cu. X-ray absorption spectroscopy demonstrates that the hole at the Cu site for the CuO is localized in 3dx2−y2 orbital unlike the well-studied monoclinic CuO phase, see Figure 2. The experimental confirmation of the tetragonal structure of CuO opens up new avenues to explore electronic and magnetic properties of six-fold coordinated Cu.

Figure 2: Polarized XA spectra for a tetragonal CuO film. The inset shows the schematic for the dx2−y2 orbital where the hole at the Cu site is preferentially localized.

HIGHLIGHTED PUBLICATIONS: [1] D. Samal, GK et al. Direct structural and spectroscopic investigation of ultrathin films of tetragonal CuO: Six-fold coordinated copper, Epl-Europhys Lett 105 (2014). [2] M. Nijland, GK et al. Local Control over Nucleation of Epitaxial Thin Films by Seed Layers of Inorganic Nanosheets, ACS Appl. Mater.

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Interfaces 140205100512009 (2014).

[HIGHLIGHTS] Using a conventional top-down approach, ever tinier transistors

Prof. dr. ir. Hajo Broersma

have been designed, built and integrated on chips in ever larger

"We exploit nanomaterials in

we have to prepare ourselves for the future by looking at different

an unconventional way.

concepts.

Instead of designing devices,

Our alternative is a bottom-up method offered and inspired by nature

we aim at tuning disordered

itself. Within PNS we explore the theoretical and experimental

nanosystems into functional

possibilities of mimicking evolution in order to (re)configure the

units. Artificial evolution is the

computational properties of different nanomaterials. First results

key to our success."

are currently under review.

quantities. This production method will face its limits eventually, and

Figure 1: Schematic illustration of a nanoparticle sample.

Programmable NanoSystems Nanoscale Engineering for Novel Computation using Evolution In the FP7 project "NASCENCE: Nanoscale Engineering for Novel Computation using Evolution" that we are coordinating, we are exploiting and analysing the behaviour of evolving nanosystems (e.g. networks of nanoparticles), with the long term goal to build information processing devices based on these architectures, without reproducing individual components. With an interface to a conventional digital computer we are using computer controlled manipulation of physical systems to evolve them towards doing useful computation. After this tuning they should then operate as reconfigurable stand-alone devices. See www.nascence.eu for more details on progress. During the project our target is to lay the technological and theoretical foundations for this new kind of information processing

Figure 2: AFM images of two nanoparticle samples produced at

technology, inspired by the success of natural evolution and the advancement of nanotechnology, and the expectation that we soon

MESA+.

reach the limits of miniaturisation in digital circuitry (Moore's Law). The mathematical modelling of the configuration of networks of nanoscale particles combined with the embodied realisation of such systems through computer controlled stochastic search can strengthen the theoretical foundations of the field while keeping a strong focus on their potential application in future devices. Apart from the Programmable NanoSystems group, other UT groups involved are NanoElectronics, Multiscale Modeling and Simulation, Formal Methods and Tools, and Computer Architectures for Embedded Systems. The other EU consortium partners involved in the NASCENCE project are located in Durham, Lugano, Trondheim and York. In collaboration with members of the NE-group, the PNS group has recently demonstrated proof of principle by the evolution and reproducibility of all Boolean binary logic (including NAND, NOR and XOR) in samples of nanoparticle networks. This work is currently under review. With members of the MMS-group and FMT-group we have developed a simulation tool that supports our findings. With members of the AI-group from Lugano we are currently applying Neural Network methods to analyze the computational capabilities

Figure 3: A simulated AND in a 4x4-grid, together with plots of the

of our samples.

averaged currents.

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[highlights] Prof. dr. Detlef Lohse

The Physics of Fluids (PoF) group is studying various flow phenomenona,

“The physics of fluids

numerical techniques and we do both fundamental and applied research.

both on a micro- and macro-scale. We use both experimental, theoretical, and

is very different on the nano- and micro-scale

Our main research areas are

as compared to the

n Turbulence and Two-Phase Flow n Granular Flow n Biomedical Application

macro-scale and offers

of Bubbles n Micro- and Nanofluidics.

Figure 1: Snapshots of the angular velocity for pure inner

various challenges of both

In the context of micro- and nanofluidics, present main subjects are surface

cylinder rotation and a radius ratio of 0.714 as obtained from

fundamental and applied

nanobubbles, wetting and impact phenomena, chemical microreactors, and

the direct numerical simulations of Ostilla-Monico et al. [2]

character.”

inkjet printing.

for different degrees of turbulence, here expressed in the Taylor number Ta: (a) Ta = 7 × 105 (laminar Taylor rolls), (b) T a = 5 × 107 (classical regime with BLs of Prandtl-Blasius type and a turbulent bulk with Taylor rolls), (c) T a = 4 × 10 9 (ultimate regime with turbulent BLs and a

Physics of Fluids

featureless turbulent bulk).

The phase space of turbulent Taylor-Couette flow Rayleigh-Benard (RB) flow, the flow in a box heated from below and cooled from above, and Taylor-Couette (TC) flow, the flow between two coaxial, independently rotating cylinders, are the two paradigmatic systems of physics of fluids. They are the ‘drosophilas’ of the field and various new concepts in fluid dynamics have been tested with these systems, be it instabilities, nonlinear dynamics and chaos, pattern formation, or turbulence. In the last few years we succeeded to realise the so-called ’ultimate turbulence’, thanks to the Twente Turbulent Taylor Couette (T3C) facility. In the ultimate state not only the bulk of the flow is turbulent, but also the boundary layers, which for weaker driving – in the so-called classical regime – are mainly of laminar type. We found that there are multiple turbulent states in the ultimate regime Figure 2: Different regimes in the (Ta, Ro−1) phase space for the

[Huisman et al, see publication [1] below]. This clearly came as big surprise, given Kolmogorov’s 1941 paradigm that suggested that for

same simulations as in the previous figure. Here Ro-1 expresses

so strongly turbulent flows with their many degrees of freedom and large fluctuations, there would only be one turbulent state as the

whether and how strongly the two cylinders are co-rotaing (Ro-1

large fluctuations would explore the entire higher dimensional phase space. To give the first conclusive evidence of multiple turbulent

>0) or counter-rotating (Ro <). The hollow circles indicate

states for turbulent Taylor–Couette flow, we probed the phase space spanned by the rotation rates of the inner and outer cylinder. The

the location of optimal angular velocity transport, and serve

manifestation of multiple turbulent states is exemplified by providing combined global torque- and local-velocity measurements. This

as an indication of the location of the borderline between the

result verifies the notion that bifurcations can occur in high-dimensional flows (that is, very large Re) and questions Kolmogorov’s

co-rotating or slowly counter-rotating regime (CWCR, blueish

paradigm.

-1

and reddish) and the strongly counter-rotating regime (SCR, greenish). Abbreviations: boundary layer (BL), Taylor rolls (TR),

We also succeeded to explore the full Taylor-Couette parameter space up to the ultimate state numerically [Ostilla-Monico et al, see

ultimate regime (UR), and inner cylinder (IC). Figure taken from

publication [2] below].

Ostilla-Monico et al. [2]. The red dot (a), triangle (b), and square (c) correspond to the locations of the three cases shown in figure 1.

HIGHLIGHTED PUBLICATIONS: [1] S.G. Huisman, R.C.A. van der Veen, C. Sun, D. Lohse, Multiple states in highly turbulent TaylorCouette flow,
Nature Communications 5 (2014) 3820-3825. [2] R. Ostilla-Monico, E.P. van der Poel, R. Verzicco, S. Grossmann, D. Lohse,
Exploring the phase diagram of fully turbulent Taylor-Couette flow,
J. Fluid Mech. 761 (2014) 1-26. [3] S. Wildeman, H. Lhuissier, C. Sun, D. Lohse, A. Prosperetti, Tribonucleation: writing with bubbles,
Proc. Nat. Acad. Sci. 111 (2014) 10089-10094. [4] R. Ostilla-Monico, R. Verzicco, S. Grossmann, D. Lohse, Turbulence decay towards the linearly stable regime of Taylor-Couette

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flow,
J. Fluid Mech. Rapids 748 (2014) R3. [5] R. Lakkaraju, F. Toschi, D. Lohse, Bubbling reduces intermittency in turbulent thermal convection, J. Fluid Mech. 745 (2014) 1-24.

[HIGHLIGHTS] The group Philosophy of Science in Practice aims at an integrated and workable account of how techno-scientific research produces technology and scientific knowledge that facilitates critical reflection on methodological issues. Textbooks by scientists usually repeat

Prof. dr. ir. Mieke Boon

an inappropriate traditional picture of science that concurs with a

"Understanding the role of technological

traditional philosophical view of science. A more refined philosophical

instruments in the production of scientific

understanding is crucial for dealing with methodological difficulties

knowledge of physical properties and phenomena

that result from increasing scientific fragmentation and technological

holds the key to understanding how scientific

complexity, and for coping with the societal importance of techno-

research enables technological design."

scientific research. Figure 1: An early European drawing of the Observatory of

Philosophy of Science in Practice

Peking (the Beijing Ancient Observatory), which is one of the oldest observatories in the world. One might say that the traditional philosophical model of scientific research is the observatory. Scientists look out at the world to bring parts of it

The scientific use of technological instruments

inside to observe them (Rouse 1987, 23). On this metaphor, the role of technological instruments in scientific research is to make natural phenomena (e.g., planetary orbits) observable.

One of the most obvious ways in which the natural sciences depend on technology is through the use of instruments. This article presents a philosophical analysis of the role of technological instruments in science. Two roles of technological instruments in scientific practices are distinguished: their role in discovering and proving scientific theories, and their role in generating and investigating new physical phenomena that are of technological relevance. Most of the philosophy of science is theory-oriented and therefore tends to ignore the importance of producing and investigating physical phenomena in current scientific practices. This article selectively chooses some recent trends in the philosophy of science that address the role of technological instruments, in order to indicate the potential for philosophical accounts of scientific practices that productively integrate the two roles of technological instruments.

Figure 2: Meissner effect: A magnet levitating above a hightemperature superconductor, cooled with liquid nitrogen. In the engineering sciences, the role of technological instruments is not firstly to make phenomena (e.g. the Meissner effect) observable in an attempt to discover what the natural world is like. Instead, researchers produce phenomena by means of technological instruments: many of the things they study are not ‘natural’ events but are very much the result of artifice, and are studied for their technological significance.

Highlighted publication: M. Boon, The Scientific Use of Technological Instruments. Chapter 4 in: The Role of Technology in Science: Philosophical Perspectives, S.O. Hansson (ed.). Dordrecht: Springer Series: Philosophy of Engineering and Technology 18, (2015).

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[highlights] Prof. dr. ir. Alexander Brinkman

It is the aim of the Quantum Transport in Matter group (QTM) to

“It is fascinating to exploit quantum

in materials and electronic devices. The research in the group

interactions in order to engineer new

builds on recent nano­technological and thin film techno­logical

materials having quasiparticles with

develop­ments within MESA+ and with advanced cryogenic

unprecedented properties such as

and electronic transport experiments a quantum mechanical

non-Abelian statistics for topological

dimension is given to the research.

explore the elec­tronic transport effects of quantum pheno­mena

computation or macroscopic quantum states for dissipationless transport.”

Figure 1: (Scanning electron microscopy image of part of a square array of 90.000 Nb nano-islands on a thin film of

Quantum Transport in Matter

Au. The superconducting islands form a Josephson junction network that can sustain a current without electrical resistance below the critical temperature of the Nb.

Superconducting nano-array as model system for strongly correlated materials By electron-beam lithography an array of 90.000 nano-islands of superconducting Nb was created (see Figure 1). Due to the sub-100 nm island spacing, the underlying gold film is proximized and the entire array can carry electrical currents without dissipation. This Josephson junction array can serve as a model system for a material with strong electron-electron correlations. The magnetic vortices that are trapped in the squares of the array act as a dual to localized electrons in a Mott insulator. A drive current takes the vortices out of equilibrium and dips in the differential resistivity turn into peaks (see Figure 2). By analyzing the scaling behavior we established that a dynamic phase transition exists between a Mott insulator and a Mott metal under the influence of an applied electric field. Additionally, both temperature and drive current act similarly on this phase transition, establishing a deep connection between statistical and quantum physics. With this type of array we can further investigate the influence of geometry (crystal lattice), disorder and out-of-equilibrium phases in strongly correlated materials, such as high-temperature superconductors, with a system that can be well controlled by nanotechnological tools.

Figure 2: When a magnetic field is applied, vortices form in the Josephson network. For certain values of the magnetic field, an integer number of vortices exists per square. This situation mimics a Mott insulator in correlated electron materials, where strong repulsion localizes an integer number of electrons, rendering the material insulating. We discovered that a driving current inverts the conductivity (dips become peaks) which is analyzed as a non-equilibrium Mott phase transition.

HIGHLIGHTED PUBLICATION: N. Poccia, T.I. Baturina, F. Coneri, C.G. Molenaar, X.R. Wang, G. Bianconi, A. Brinkman, H. Hilgenkamp, A.A. Golubov, V.M. Vinokur,

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Critical behavior at the dynamic Mott transition, arXiv/1408.5525 (2014).

[HIGHLIGHTS] The group of Semiconductor Components (SC) deals with silicon-based technology and integrated-circuit devices, in other words: the making of a microchip. The Nanolab provides an excellent facility to experiment with new materials and

Prof. dr. Jurriaan Schmitz

concepts for transistors, diodes and metallization; our close

"Miniaturization of transistors is

cooperation with semiconductor industry paves the way to

reaching an end point; we therefore

application. With a focus on new materials for integrated

study new ways to improve the transistor

circuits, we study a variety of devices, spanning from steep-

performance for the advancement of

subthreshold switches and RF MEMS switches to GaN and

integrated electronics."

silicon power transistors.

Semiconductor Components Changing the strain in a transistor Figure 1: Sketch of the transistor prototype. The transistor

A team led by dr. Ray Hueting, together with the company SolMateS, has developed a new type of transistor to reduce the power

current flows through tiny silicon bars, enveloped by a

consumption of microchips. The basic element of modern electronics, namely the transistor, suffers from significant current

package of conductor layers and piezo-electric material. The

leakage. By enveloping a transistor with a shell of piezoelectric material, which distorts when a voltage is applied, researchers

conductors control the amount of mechanical tension, and

were able to reduce this leakage by a factor of five (compared to a transistor without this material).

also the quantity of electrons in the silicon. In this way, the

Current leakage in transistors is one of the causes of battery depletion in portable electronic devices, such as smartphones and

power can be turned on and off.

laptops. With the new type of transistor, either the current leakage (while the transistor is not active) or the energy consumption (while the transistor is active) can be addressed. In the latter case, it is estimated that energy consumption can be reduced by approximately 10%. The trick lies in a piezoelectric material which is applied to the exterior of the transistor. The piezoelectric material expands when you apply a voltage to it and compresses the silicon in the transistor with a pressure of about 10,000 atmospheres. This high pressure ensures that electrons flow through the transistor faster. You can therefore make microchips more efficient by 'intelligently squeezing the transistor'. Incidentally, existing transistors are already put under high pressure in order to improve their efficiency. In this case, however, the pressure is permanently built in, which actually increases the current leakage. In the prototype designed by the UT, the transistor is only put under pressure when required and this makes a big difference. The electric current needed to switch the transistor from on to off is thereby partly replaced by mechanical tension.

Figure 2: Top view of the upward movement of a piezo FET

The operating principle of this transistor was theoretically predicted in 2013 by the same research group. But in advance it was

with 5 parallel silicon bars (also referred to as 'fins') as a

by no means certain that the transistor would be a success. The reason for this is that piezoelectric materials and silicon (which

result of the piezo-electric effect. When an electrical current

transistors are made of) are difficult to combine. The researchers solved this by inserting a buffer layer between the two materials.

is applied across the piezoelectric material, the green parts

This work was co-financed by the Dutch Technology Foundation STW and NanoNextNL.

do not move, but the red ones do.

HIGHLIGHTED PUBLICATIONs: [1] B. Kaleli, R.J.E. Hueting, M.D. Nguyen, R.A.M. Wolters, Integration of a Piezoelectric Layer on Si FinFETs for Tunable Strained Device Applications, IEEE Transactions on Electron Devices 61 (6) (2014) 1929-1935. [2] R.J.E. Hueting, T. van Hemert, B. Kaleli, R.A.M. Wolters, J. Schmitz, On Device Architectures, Subthreshold Swing and Power Consumption of the Piezoelectric Field-Effect Transistor (π-FET), IEEE Journal of the Electron Devices Society, in press (2015).

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[highlights] Research within the Soft matter, Fluidics and Inter­ faces group (SFI) is directed at interfacial phenomena and processes that are relevant for momentum, mass and heat transport. We study and exploit fundamental

Prof. dr. ir. Rob G.H. Lammertink

principles where fluid flow encounters interfaces

“Transport phenomena are

level is crucial as it contains the boundary layers for

very rich near interfaces,

transport. Understanding these mechanisms allows

offering great opportunities

one to exploit them for many applications, including

to exploit them.”

catalysis and separations.

on a sub-millimeter length scale. The microscale

Soft matter, Fluidics and Interfaces Microreactors to probe intrinsic catalytic reaction kinetics Heterogeneous photocatalysis is a promising technology for environmental remediation. However, commercial products are focused Figure 1: Illustration of photocatalytic water cleaning using

mostly on self-cleaning surfaces and air filtering. Important applications such as removing refractory compounds from wastewater

immobilized TiO2.

are scarce. Heterogeneous reactions involve the diffusion of species to the active catalyst sites. Mass transport becomes important and if omitted can alter the true values of the reaction kinetics. The real value for the reaction rate constant allows the evaluation of the mass transfer contribution on the conversion which is a main factor dictating the performance of a reactor. A complete model for immobilized photocatalytic microreactors is set up for the first time and solved for both light independency and light dependency first order kinetics. We have defined a criterion for neglecting light intensity based on film thickness and absorption coefficient. Performance parameters are also derived for the situation when irradiance has to be considered. The microfluidic based photocatalytic reactor proved to be highly effective in degrading organic contaminants from an aqueous stream. Full degradation could be achieved for residence times of a few tens of seconds. Most of the literature regarding photocatalytic processes describes slurry reactors that present typical degradation times of several hours. The fast degradation kinetics that we observed is ascribed to efficient mass transport combined with the very efficient distribution of light. Reactor concepts based on these findings could be attractive for point-of-use water treatment installations.

Figure 2: Internal effectiveness factor for both the light independent model and the light dependent model as a function of catalyst thickness. The model provides insight regarding the limiting mechanism for photocatalytic conversion, being the mass transport or the light distribution.

HIGHLIGHTED PUBLICATION: A. Visan, D. Rafieian, W. Ogieglo, R.G.H. Lammertink, Modeling intrinsic kinetics in immobilized photocatalytic microreactors, Applied Catalysis

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B: Environmental 150-151 (2014) 93-100.

[HIGHLIGHTS] The department Science, Technology and Policy Studies (ST PS) investigates the dynamics and governance of science, technology and innovation from an

Prof. dr. Stefan Kuhlmann

interdisciplinary social science perspective. Our research covers ongoing dynamics,

“For nanotechnologies to move out of

historical developments and future-oriented studies. Studying such dynamics is

the laboratories, they have to become

a goal in itself, but also an important prerequisite for policy recommendations and

embedded into society -in business,

exploring strategic implications for innovation actors. In the area of nanotechnologies,

consumer and policy contexts. We

we investigate current innovation dynamics in various domains, such as graphene

follow processes of embedding and

or sensors for food and water applications. We study practices and conditions of

anticipate on possible (responsible)

responsible innovation, the role of promises and concerns, sectoral implications and

ways of embedding.”

collaboration in science.

Science, Technology and Policy Studies Micro- and nanotechnology-enabled sensor applications and user requirements The food & beverages and drinking water industries face important challenges in managing and assuring quality and safety of their products. Emerging sensor technologies enabled by micro- and nanotechnologies are expected to contribute to solving these issues through offering innovative solutions via miniaturization, high sensitivity and specificity, and speed of measurement. However, sensor innovation and implementation is not straightforward, among others due to lack of clarity in requirements of future users. When users --business users in our case -- are thinking about requirements regarding future products, they do more than envisioning desired characteristics of a new technology and their implementation in an organization. They also take into account how the application of new technologies affects their business partners, whether the new products will be accepted according to regulatory standards and more broadly in society (see Figure 1). Especially when new products do not easily fit with current ways of working within a particular sector this creates challenges. We conducted interviews in both sectors and organized interactive workshops supported by scenarios exploring future developments (see Figure 2). In the drinking water sector, fit or misfit of sensor applications with standardized and prescribed monitoring practices

Figure 1: Formulation of product requirements in context.

were a key issue, while impacts on commercial relationships across the value chain were highlighted in the world of food and beverages. Thus, for development and introduction of sensors not only customers are important, but also actors in the broader environment. The modification or development of standards was considered to be especially relevant and helpful in clarifying user requirements. Governmental agencies could play a stimulating role by developing regulations that would open up opportunities for the use of novel monitoring technologies. Finally, workshop participants pointed out that societal debates about acceptable risks in terms of quality and safety were also important for understanding preferred specifications of nano- and microtechnology-enabled sensors. Figure 2: Interactions during the workshop event.

HIGHLIGHTED PUBLICATIONs: [1] H. te Kulve, K. Konrad, The demand side of innovation governance: Demand articulation processes in the case of nano-based sensor technologies. In D.M. Bowman, E. Stokes, A. Rip (Eds.), Embedding and Governing New Technologies: A Regulatory, Ethical & Societal Perspective: Pan Stanford Publishing, (forthcoming 2015). [2] H. te Kulve, A.J. Kronemeijer, Toepassing van nieuwe sensoren vereist brede samenwerking en gestructureerde discussies. H2O-Online (2014).

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[highlights] At the Transducer Science and Technology group (TST) we specialize in

Prof. dr. ir. Gijs Krijnen

trans­ducers, we invent (micro-) fabrication processes and acquire funda­

“The fabrication of complex

mental under­standing of underlying device physics. We demonstrate these

3D-systems over a large size-range is

on a variety of devices and develop the science of working principles

a main challenge. Only combinations of

and design, with the aim to transfer this knowledge to industry. We study

various techniques, e.g. self-assembly,

biomimetic approaches to pave the road to new, well performing, robust and

Figure 1: Schematic lay-out of the used micromechanical

photo-lithography based technologies

energy-efficient tranducers, next to cutting-edge MEMS-sensors and exploit

slider structure with slider drive voltages (Ua and Ub) and bias

and 3D printing, will eventually provide

nonlinear, parametric and stochastic phenomena to obtain extraordinary

voltage for the well formation (USR).

solutions to this challenge on all

functionalities. We consider systems aspects and implement these where

scales.”

essential to show proof of principle of the devices.

Transducer Science and Technology Figure 2: An SEM picture of the slider structure realized in

Stochastic Resonance in a Voltage-Controlled Micromechanical Slider

Silicon on Insulator technology.

Stochastic resonance (SR) is a phenomenon in nonlinear systems where the addition of noise actually improves the signal-to-noise ratio and allows the observation of very tiny signals, normally not measurable. SR is attributed to a variety of effects in nature, amongst others the occurrence of glacial climate changes and the ability to perceive sub-threshold acoustic signals in mammalian hearing. SR has been extensively investigated theoretically, but is much harder to study experimentally. We have fabricated micromechanical slider structures specifically designed for full control of all parameters that are of importance for the occurrence of SR. Using a silicon- on-insulator-based process, we realized a slider structure with periodic capacitive structures to obtain tunable unstable regions in the form of potential energy wells. By controlling the strength of these capacitive wells by a dc-bias voltage, operating the device in push-pull mode by electrostatic actuation and adding a judiciously chosen amount of white noise to the actuation comb Figure 3: As evidenced in this graph, the potential energy wells cause nonlinearity, needed for SR.

drives, we were able to obtain clear proof of SR. It was experimentally shown that this SR scheme allows for detection of subthreshold forces. One of our findings was that the amount of noise needed for optimal SR strongly depends on the noise bandwidth. Further, we demonstrated that the implementation of SR in a slider allows for improved detection of both sinusoidal and triangular waveforms, but that the performance of SR deteriorates for square waveforms, owing to the multitude of frequencies involved in these kind of signals.

Figure 4: Characteristic SR curves where the SNR is maximum for nonzero noise power. The three curves represent different bandwidths for the added noise leading to dissimilar SR curves.

HIGHLIGHTED PUBLICATIONS: [1] H. Droogendijk, M.J. de Boer, R.G.P. Sanders, G.J.M. Krijnen, Stochastic resonance in a voltage-controlled micromechanical slider. Journal of microelectromechanical systems, (2014) 1057-7157. [2] V.B. Svetovoy, R.G.P. Sanders, K. Ma, M.C. Elwenspoek, New type of microengine using internal combustion of hydrogen and oxygen, Scientific Reports, Vol-4, 4296. [3] H. Droogendijk, R.A. Brookhuis, M.J. de Boer, R.G.P. Sanders, G.J.M. Krijnen, Towards a biomimetic gyroscope inspired by the fly's haltere using microelectromechanical systems technology, Journal of the Royal Society interface,

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11 (99) (2014) 20140573.

[HIGHLIGHTS] XUV light - light with a wavelength in the range from tenths to tens of nanometers - offers new physical insights. XUV light can trigger atomic and material processes that are otherwise unobserved, providing a new view on light-matter interactions. XUV light also offers the ability to image at the nanometer scale, and to perform materials analysis with sensitivity in the ppb range. These applications require high precision optics that

Prof. dr. Fred Bijkerk

reflect, focus, and filter XUV light. The development of such optics is the

"Focussing research on XUV optics: a

goal of the XUV Optics group: it addresses basic, nanoscale aspects of

mutual benefit for high tech industry

thin film optics and gears fundamental research to the specific needs of

and basic science."

science and industry.

XUV Optics World reflectivity record beyond the EUV wavelength range The XUV Optics group holds world records in the performance of so-called multilayer reflective mirrors for the XUV wavelength range. Such optics is explored by semiconductor industry for printing nanometer scale chip features. Following Moore’s law on chip feature scaling, an ever smaller wavelength is used for the imaging process. While optics for 13.5 nm wavelength, named ‘EUV’, is now considered fairly mature, some research excursions to shorter wavelength systems are being made. Also here, the XUV Optics group has reached a world record: a reflectivity of 64.3% of 6.8 nm light, named ‘Beyond EUV’. The result is important because it determines the application perspective of such optics for the next generation photolithography, moving from 13.5 to 6.8 nm. The result was obtained by applying a multi-step layer growth process based on passivation of interdiffusion processes in multilayered systems. The Mo/Si layer pair, used for the EUV, was swapped by La/B layer pair, at half the layer thickness! Key was the control of the layer interface processes, such as intermixing and chemistry processes, which have a thickness tolerance of less than a nanometer. Of relevance was also an improved resolution of X-ray reflectivity analysis. Such analysis became possible down to the Ångstrom level layer thicknesses, revealing critical layer formation processes. Further tuning is expected to gradually increase the B-EUV reflectivity.

Figure 1: Part of the new, 500 m2 large, XUV laboratory at MESA+ dedicated to thin film and multilayer research.

Figure 2: Some of the basic solid state and optics processes investigated in the XUV Optics group.

HIGHLIGHTED PUBLICATIONS: [1] D. Kuznetsov, A.E. Yakshin, R.W.E. v.d. Kruijs, F. Bijkerk, Short period La/B and LaN/B multilayer mirrors for ~6.8 nm wavelength, Optics Express 21(24) (2013) 29894-29. [2] S.L. Nyabero, R.W.E. v.d. Kruijs, A.E. Yakshin, I.A. Makhotkin, J. Bosgra, F. Bijkerk, Diffusion-induced structural changes in La/B-based multilayers for 6.7-nm radiation, Journal of micro/nanolithography MEMS and MOEMS, 13(1) (2014) 013014-013014-5. [3] web text on thesis defense Muharrem Bayraktar February 2014.

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MESA+ Annual Report 2014

[SCIENTIFIC PUBLICATIONS]

MESA+ Scientific Publications 2014 PHD THESES

Çivitci, F. (2014, October 31) Integrated optical modules for miniature raman spectroscopy devices. University of Twente. Prom./coprom.: prof.dr. M. Pollnau & H.J.W.M. Hoekstra.

Agarwal, S. (2014, April 03). Surface chemistry of tailored ceria nanoparticles: interaction with CO and H2O. University of Twente. Prom./coprom.: prof.dr.ir. L. Lefferts & dr. B.L. Mojet.

Cumurcu, A. (2014, September 26). Ellipsometry based imaging techniques for nanoscale characterization of heterogeneous polymer films. University of Twente. Prom./coprom.: prof.

Ataç, D. (2014, December 4). Tuning electron transport in metal films and graphene with

dr. G.J. Vancso & dr. P.M. Schön.

organic monolayers. University of Twente. Prom.: prof.dr.ir. W.G. van der Wiel. Droogendijk, H. (2014, February 28). Bio-inspired MEMS Flow and Inertial Sensors. Banerjee, N. (2014, September 17). Epitaxial perovskite oxide devices fabricated by lift-off

University of Twente. Prom.: prof.dr.ir. G. Krijnen.

technology. University of Twente. Prom./coprom.: prof.dr.ing. A.J.H.M. Rijnders & dr.ir. G. Koster.

Eerkes, P.D. (2014, June 19). Top-gating of the two-dimensional electron gas at complex oxide interfaces. University of Twente. Prom./coprom.: Prof.dr.ir. H. Hilgenkamp & prof.dr.ir. W.G.

Berkelaar, R.P. (2014, September 19). Nanobubble-like objects at solid-liquid interfaces.

van der Wiel.

University of Twente. Prom./coprom.: prof.dr. D. Lohse & prof.dr.ir. H.J.W. Zandvliet. Fussell, A.L. (2014, July 04). Coherent anti-Stokes Raman scattering microscopy for Besselink, R. (2014, March 28). Understanding microstructural evolution of mixed metal-

pharmaceutics: a shift in the right direction. University of Twente. Prom./coprom.: prof.dr.

oxide silsesquioxane glasses through wet-chemical synthesis. University of Twente. Prom.:

J.L. Herek, dr.ir. H.L. Offerhaus & C.J. Strachan.

prof.dr.ir. J.E. ten Elshof. Gagarina, E. (2014, October 3). Variational approaches to water wave simulations Bosch, P.J. (2014, July 03). Single-molecule tracking tools to study plasma membrane

University of Twente. Prom./coprom.: prof.dr.ir. J.J.W. van der Vegt & dr.ir. O. Bokhove.

receptor dynamics: applications to EGF receptor. University of Twente. Prom./coprom.: prof. dr. V. Subramaniam & dr.ir. J.S. Kanger.

Garbacik, E.T. (2014, May 23). Contrast in coherent raman scattering microscopy. University of Twente. Prom./coprom.: prof.dr. J.L. Herek & dr.ir. H.L. Offerhaus.

Brinks, P. (2014, September 10). Size effects in thermoelectric cobaltate heterostructures. University of Twente. Prom./coprom.: prof.dr.ing. A.J.H.M. Rijnders & dr.ir. M. Huijben.

Ghazaryan, L. (2014, November 27). Aerosol dynamics in porous media. University of Twente. Prom.: prof.dr.ir. B.J. Geurts.

Brookhuis, R.A. (2014, October 17). Miniature force-torque sensors for biomechanical applications. University of Twente. Prom./coprom.: prof.dr.ir. G. Krijnen & dr.ir. R.J. Wiegerink.

Güler, E. (2014, January 31). Anion exchange membrane design for reverse electrodialysis. University of Twente. Prom.: prof.dr.ir. D.C. Nijmeijer.

Burouni, N. (2014, November 12). 3D Nanofabrication of fluidic components by corner lithography. University of Twente. Prom.: prof.dr. M.C. Elwenspoek.

Hoàng, T.M.C. (2014, July 18). Catalytic gasification of humin based by-product from biomass processing - a sustainable route for hydrogen. University of Twente. Prom./coprom.: prof.dr.

Büyükköse, S. (2014, March 20).   Nanoimprinted high-frequency surface acoustic wave

K. Seshan & prof.dr.ir. L. Lefferts.

devices: Generation, characterization and acousto-electric transport.  University of Twente. Prom.: prof.dr.ir. W.G. van der Wiel.

Hoek, M. (2014, August 28). At the interface between electron and hole-doped cuprates. University of Twente. Prom./coprom.: prof.dr.ir. H. Hilgenkamp.

Chen, W. (2014, May 16). Oxygen Transport Membranes: A Material Science and Process

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Engineering Approach. University of Twente. Prom./coprom.: prof.dr.ir. A. Nijmeijer & prof.

Hoog, N. (2014, September 12). Stub resonators transmission-line-based water sensors

dr. A.J.A. Winnubst.

University of Twente. Prom.: prof.dr.ir. A. van den Berg.

[SCIENTIFIC PUBLICATIONS] Huisman, S.G. (2014, September 19). Taylor-Couette turbulence. University of Twente. Prom./

Liu, Li (2014, June 20). Multiscale simulations of star polymer melts. University of Twente.

coprom.: prof.dr. D. Lohse & dr. Chao Sun.

Prom./coprom.: prof.dr. W.J. Briels & dr.ir. W.K. den Otter.

Imole, O.I. (2014, March 14). Discrete element simulations and experiments: toward

Liu, Y. (2014, March 14). Spin relaxation from first-principles. University of Twente. Prom.:

applications for cohesive powders. University of Twente. Prom./coprom.: prof.dr.rer.-nat S.

prof.dr. P.J. Kelly.

Luding & dr. V. Magnanimo. Maijenburg, A.W. (2014, January 17). Templated electrodeposition of functional nanostructures: Jankowski, M.J. (2014, September 26). Reciprocal and real space investigation of Ag/Pt(111):

nanowires, nanotubes and nanocubes. University of Twente. Prom./coprom.: prof.dr.ir. J.E. ten

growth, structure and interaction with oxygen. University of Twente. Prom./coprom.: prof.

Elshof & prof.dr.ing. D.H.A. Blank.

dr.ir. B. Poelsema & dr.ir. H. Wormeester. Molenaar, C.G. (2014, September 05). Transport properties of Josephson systems: geometry versus Jansen, H.P. (2014, September 12). Droplet dynamics on chemically striped patterned

topology. University of Twente. Prom./coprom.: prof.dr.ir. A. Brinkman & prof.dr.ir. H. Hilgenkamp.

surfaces: An experimental and computational study. University of Twente. Prom./coprom.: prof.dr.ir. H.J.W. Zandvliet & dr. E.S. Kooij.

Munirathinam, R. (2014, December 18). Wall-coated polymer brushes as catalytic supoort for organic reactions in continuous-flow microreactors. University of Twente. Prom./coprom.:

Kang, S. (2014, March 28). Single-molecule detection in electrochemical nanogap devices.

prof.dr.ir. J. Huskens & dr. W. Verboom.

University of Twente. Prom.: prof.dr. S.G. Lemay. Nguyen, T.S. (2014, December 04). Development of an efficient catalyst for the pyrolytic Kappel, C. (2014, May 16). An integrated membrane bioreactor - nanofiltration concept with

conversion of biomass into transport fuel. University of Twente. Prom./coprom.: prof.dr. K.

concentrate recirculation for wastewater treatment and nutrient recovery. University of

Seshan & prof.dr.ir. L. Lefferts.

Twente. Prom./coprom.: prof.dr.ir. D.C. Nijmeijer & dr.ir. A.J.B. Kemperman. Nijland, M. (2014, November 26). Anisotropy in patterned perovskite oxides. University of Kazmi, S.N.R. (2014, June 18). Capacitively Transduced Polycrystalline GeSi MEM Resonators.

Twente. Prom./coprom.: prof.dr.ir. J.E. ten Elshof, prof.dr.ing. A.J.H.M. Rijnders & dr.ir. G.

University of Twente. Prom.: prof.dr. J. Schmitz.

Koster.

Kozhummal, R. (2014, October 24). Structural investigations on semiconductor nano­

Nyabero, S.L. (2014, February 07). Thermally induced diffusion phenomena and compound

structures: wet chemical approaches for the synthesis of novel functional structures.

interlayer structural changes in EUV multilayers. University of Twente. Prom./coprom.: prof.

University of Twente. Prom./coprom.: prof.dr. M.C. Elwenspoek & M. Zacharias.

dr. F. Bijkerk & R.W.E. van de Kruijs.

Krabbenborg, S.O. (2014, January 24). Surface gradients under electrochemical control.

Ogarko, V.A. (2014, May 02). Microstructure and macroscopic properties of polydisperse

University of Twente. Prom.: prof.dr.ir. J. Huskens.

systems of hard spheres. University of Twente. Prom.: prof.dr.rer.-nat S. Luding.

Krijnen, B. (2014, September 26). A large-stroke planar MEMS-based stage with integrated

Ogieglo, W. (2014, March 21). In-situ spectroscopic ellipsometry for studies of thin films and

feedback. University of Twente. Prom./coprom.: prof.dr. J.L. Herder & dr.ir. L. Abelmann.

mem­branes. University of Twente. Prom./coprom.: prof.dr.-ing. M. Wessling & prof.dr.ir. N.E. Benes.

Kuiper, B. (2014, January 30). Size effects in epitaxial oxide thin films. University of Twente. Prom./coprom.: prof.dr.ing. A.J.H.M. Rijnders & dr.ir. G. Koster.

Qureshi, H.F. (2014, June 26). Orchestrating Pore Structure of Hybrid Silica Membranes for Molecular Separations. University of Twente. Prom./coprom.: prof.dr.ir. A. Nijmeijer & prof.

Kumar, N. (2014, March 14). Micro-macro and jamming transition in granular materials.

dr. A.J.A. Winnubst.

University of Twente. Prom./coprom.: prof.dr.rer.-nat S. Luding & dr. V. Magnanimo. Ruiter, J. de (2014, March 26). An airbag for drops: high speed interferometry studies of air Legrain, A.B.H. (2014, November 13). Elastocapillary self-folding of micro-machined structures:

film lubrication in drop impact. University of Twente. Prom./coprom.: prof.dr. F. Mugele & dr.

capillary origami. University of Twente. Prom./coprom.: dr.ir. L. Abelmann & dr. N.R. Tas.

H.T.M. van den Ende.

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[SCIENTIFIC PUBLICATIONS] Ruiter, R. de (2014, March 26). Manipulation of drops with electrowetting: from morphological

Veligura, V. (2014, March 21). Material characterization and modification using helium ion

transitions to microfluidics. University of Twente. Prom./coprom.: prof.dr. F. Mugele & dr. M.

microscopy: various examples. University of Twente. Prom./coprom.: prof.dr.ir. B. Poelsema,

Duits.

dr. G. Hlawacek & dr. R. van Gastel.

Schmelz, M. (2014, January 22). Development of a high sensitive receiver system for transient

Verbeek, A.A. (2014, October 01). Efficiently generated turbulence for an increased flame

electromagnetics. University of Twente. Prom./coprom.: prof. H. Rogalla & H.G. Meyer.

speed. University of Twente. Prom./coprom.: prof.dr.ir. T.H. van der Meer & prof.dr.ir. B.J. Geurts.

Shukla, S. (2014, December 18). Membrane distillation with porous metal hollow fibers for the concentration of thermo-sensitive solutions. EUDIME: University of Montpellier 2, UT

Vermaas, D.A. (2014, January 17). Energy generation from mixing salt water and fresh water:

University of Twente, Katholieke Universiteit Leuven. Prom./coprom.: prof. Jose Sanchez

smart flow strategies for reverse electrodialysis. University of Twente. Prom.: prof.dr.ir. D.C.

Marcano, prof. I. Vankelecom & prof.dr.ir. N.E. Benes.

Nijmeijer .

Singh, A. (2014, May 14). Micro-macro and rheology in sheared granular matter. University of

Verwegen, M. (2014, September 05). Protein cage clustering: towards functional biohybrid

Twente. Prom./coprom.: prof.dr.rer.-nat S. Luding & dr. V. Magnanimo.

materials. University of Twente. Prom.: prof.dr. J.J.L.M. Cornelissen.

Sleczkowski, P.B. (2014, December 11). Chirality under confinement - multidimensional

Visser, C.W. (2014, December 19). Fundamentals and applications of fast micro-drop impact.

constraints in liquid crystalline materials. University of Twente. Prom./coprom.: prof.dr.

University of Twente. Prom./coprom.: prof.dr. D. Lohse & dr. C. Sun.

J.J.L.M. Cornelissen, E. Lacaze & dr. N.H. Katsonis. Wibisono, Y. (2014, September 11). Two-phase flow for fouling control in membranes. Smith, B.F. (2014, September 04). Ferroelectrics from the bottom up: investigation of nanoscale

University of Twente. Prom./coprom.: prof.dr.ir. D.C. Nijmeijer & dr.ir. A.J.B. Kemperman.

boundary conditions in ferroelectric thin films using novel bottom-up growth techniques. University of Twente. Prom./coprom.: prof.dr.ing. A.J.H.M. Rijnders, prof.dr.ir. J.E. ten Elshof

Yeganegi Dastgerdi, E. (2014, October 01). Controlling emission and propagation of light with

& dr.ir. G. Koster.

photonic band gap crystals. University of Twente. Prom./coprom.: prof.dr. W.L. Vos & prof.dr. A. Lagendijk.

Sripathi, V.G.P. (2014, October 16). Hybrid inorganic-organic membranes: Tuning pore properties by sequential grafting. University of Twente. Prom./coprom.: prof.dr.ir. A. Nijmeijer

Zabeti, M. (2014, June 04). Renewable fuels via catalytic pyrolysis of lignocellulose. University

& prof.dr.ir. N.E. Benes.

of Twente. Prom./coprom.: prof.dr. K. Seshan & prof.dr.ir. L. Lefferts.

Stefanovic, A. (2014, November 05). Insights into alpha-synuclein oligomer interactions with

Zieger, G. (2014, September 04). Optimization of radiation sensors for a passive terahertz video

model membranes. University of Twente. Prom./coprom.: prof. dr. V. Subramaniam & dr.

camera for security applications. University of Twente. Prom./coprom.: prof. H. Rogalla & H.G.

M.M.A.E. Claessens.

Meyer.

Stimberg, V.C. (2014, October 10). Microfluidic platform for bilayer experimentation. From a

Zijlstra, N. (2014, October 17). Parkinson's disease in the spotlight: unraveling nanoscale

research tool towards drug screening. University of Twente. Prom.: prof.dr.ir. A. van den Berg.

-Synuclein

oligomers using ultrasensitive single-molecule spectroscopy. University of

Twente. Prom./coprom.: prof. dr. V. Subramaniam & dr. C. Blum. Stopel, M.H.W. (2014, September 25). Multimodal spectroscopy of single fluorescent nanoprobes: photophysics and characterization. University of Twente. Prom./coprom.: prof. dr. V. Subramaniam & dr. C. Blum.

Susarrey Arce, A. (2014, April 11). Switching activation barriers: new insights in E-field driven processes at the interface: perspectives in physical chemistry and catalysis. University of Twente. Prom./coprom.: prof.dr.ir. L. Lefferts, prof.dr. J.G.E. Gardeniers & dr. A. van Houselt.

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anisotropy induced low field anomalous anisotropic magnetoresistance in manganite thin films” APL MATERIALS 2 96112 (2014)

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B-LASERS AND OPTICS 116 603 - 607 (2014)

“Research Update: Molecular electronics: The single-molecule switch and transistor” APL MATERIALS 2 10701 (2014)

Soloviev, I. I.; Klenov, N. V.; Bakurskiy, S. V.; Bol'ginov, V. V.; Ryazanov, V. V.; Kupriyanov, M. Yu.; Golubov, A. A. “Josephson magnetic rotary valve” APPLIED PHYSICS LETTERS 105

Kovacevic, M.; Espinosa, R. Brunet; Lefferts, L.; Mojet, B. L. “Calcination effects on CeZrOx

242601 (2014)

geometry and styrene production from ethylbenzene” APPLIED CATALYSIS A-GENERAL 469 1 - 7 (2014)

Soloviev, I. I.; Klenov, N. V.; Bakurskiy, S. V.; Pankratov, A. L.; Kuzmin, L. S. “Symmetrical Josephson vortex interferometer as an advanced ballistic single-shot detector” APPLIED

van Dijk, Vic H. A.; Simmelink, Gideon; Mul, Guido “The influence of water vapour on the

PHYSICS LETTERS 105 202602 (2014)

photocatalytic oxidation of cyclohexane in an internally illuminated monolith reactor” APPLIED CATALYSIS A-GENERAL 470 63 - 71 (2014)

Brinks, Peter; Rijnders, Guus; Huijben, Mark “Size effects on thermoelectric behavior of ultrathin Na xCoO2 films” APPLIED PHYSICS LETTERS 105 193902 (2014)

Lai, Yulong; He, Songbo; Li, Xianru; Sun, Chenglin; Seshan, K. “Dehydrogenation of n-dodecane over Pt-Sn/Mg(Al)O catalysts: Investigating the catalyst performance while

Bayraktar, M.; Chopra, A.; Bijkerk, F.; Rijnders, G. “Nanosheet controlled epitaxial growth

monitoring the products” APPLIED CATALYSIS A-GENERAL 469 74 - 80 (2014)

of PbZr 0.52Ti0.48O3 thin films on glass substrates” APPLIED PHYSICS LETTERS 105 132904 (2014)

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[SCIENTIFIC PUBLICATIONS] Ribera, R. Coloma; van de Kruijs, R. W. E.; Kokke, S.; Zoethout, E.; Yakshin, A. E.; Bijkerk,

Mohapatra, P. K.; Raut, D. R.; Iqbal, M.; Huskens, J.; Verboom, W. “Evaluation of several

F. “Surface and sub-surface thermal oxidation of thin ruthenium films” APPLIED PHYSICS

multiple diglycolamide-functionalized calix[4] arene ligands for the isolation of carrier free

LETTERS 105 131601 (2014)

Y-90 from Sr-90” APPLIED RADIATION AND ISOTOPES 85 133 - 138 (2014)

Vailionis, A.; Boschker, H.; Liao, Z.; Smit, J. R. A.; Rijnders, G.; Huijben, M.; Koster, G.

Colak, Arzu; Wormeester, Herbert; Zandvliet, Harold J. W.; Poelsema, Bene “The influence of

“Symmetry and lattice mismatch induced strain accommodation near and away from

instrumental parameters on the adhesion force in a flat-on-flat contact geometry” APPLIED

correlated perovskite interfaces” APPLIED PHYSICS LETTERS 105 131906 (2014)

SURFACE SCIENCE 308 106 - 112 (2014)

Thyrrestrup, Henri; Yuce, Emre; Ctistis, Georgios; Claudon, Julien; Vos, Willem L.; Gerard,

Feng, Xueling; Kieviet, Bernard D.; Song, Jing; Schon, Peter M.; Vancso, G. Julius “Adhesion

Jean-Michel “Differential ultrafast all-optical switching of the resonances of a micropillar

forces in AFM of redox responsive polymer grafts: Effects of tip hydrophilicity” APPLIED

cavity” APPLIED PHYSICS LETTERS 105 111115 (2014)

SURFACE SCIENCE 292 107 - 110 (2014)

Luo, Chen; Zhang, Wen; Wong, P. K. J.; Zhai, Ya; You, Biao; Du, Jun; Zhai, Hongru “The influence

Krylova, Valentina; Milbrat, Alexander; Embrechts, Anika; Baltrusaitis, Jonas “Ag2S

of Nd dopants on spin and orbital moments in Nd-doped permalloy thin films” APPLIED

deposited on oxidized polypropylene as composite material for solar light absorption”

PHYSICS LETTERS 105 82405 (2014)

APPLIED SURFACE SCIENCE 301 134 - 141 (2014)

Hajlasz, M.; Donkers, J. J. T. M.; Sque, S. J.; Heil, S. B. S.; Gravesteijn, D. J.; Rietveld, F. J. R.;

Gao, A.; Zoethout, E.; Sturm, J. M.; Lee, C. J.; Bijkerk, F. “Defect formation in single layer

Schmitz, J. “Sheet resistance under Ohmic contacts to AlGaN/GaN heterostructures”

graphene under extreme ultraviolet irradiation” APPLIED SURFACE SCIENCE 317 745 - 751

APPLIED PHYSICS LETTERS 104 242109 (2014)

(2014)

Khalil, Islam S. M.; Dijkslag, Herman C.; Abelmann, Leon; Misra, Sarthak “MagnetoSperm:

Shvadchak, Volodymyr V.; Subramaniam, Vinod “A Four-Amino Acid Linker between

A microrobot that navigates using weak magnetic fields” APPLIED PHYSICS LETTERS 104

Repeats in the alpha-Synuclein Sequence Is Important for Fibril Formation” BIOCHEMISTRY

223701 (2014)

53 279 - 281 (2014)

Poccia, Nicola; Chorro, Matthieu; Ricci, Alessandro; Xu, Wei; Marcelli, Augusto; Campi,

Sidhu, Arshdeep; Segers-Nolten, Ine; Subramaniam, Vinod “Solution conditions define

Gaetano; Bianconi, Antonio “Percolative superconductivity in La2CuO4.06 by lattice

morphological homogeneity of alpha-synuclein fibrils” BIOCHIMICA ET BIOPHYSICA ACTA-

granularity patterns with scanning micro x-ray absorption near edge structure” APPLIED

PROTEINS AND PROTEOMICS 1844 2127 - 2134 (2014)

PHYSICS LETTERS 104 221903 (2014) Rurup, W. Frederik; Verbij, Fabian; Koay, Melissa S. T.; Blum, Christian; Subramaniam, Vinod; Boota, M.; Houwman, E. P.; Dekkers, M.; Nguyen, M.; Rijnders, G. “Epitaxial Pb(Mg1/3Nb2/3)

Cornelissen, Jeroen J. L. M. “Predicting the Loading of Virus-Like Particles with Fluorescent

O3-PbTiO3 (67/33) thin films with large tunable self-bias field controlled by a PbZr1-xTi xO3

Proteins” BIOMACROMOLECULES 15 558 - 563 (2014)

interfacial layer” APPLIED PHYSICS LETTERS 104 182909 (2014) De, Arpita; Sparreboom, Wouter; van den Berg, Albert; Carlen, Edwin T. “Rapid microfluidic Stolichnov, I.; Iwanowska, M.; Colla, E.; Ziegler, B.; Gaponenko, I.; Paruch, P.; Huijben, M.;

solid-phase extraction system for hyper-methylated DNA enrichment and epigenetic

Rijnders, G.; Setter, N. “Persistent conductive footprints of 109 degrees domain walls in

analysis” BIOMICROFLUIDICS 8 UNSP 054119 (2014)

bismuth ferrite films” APPLIED PHYSICS LETTERS 104 132902 (2014) Zhang, Xuehua; Lohse, Detlef “Perspectives on surface nanobubbles” BIOMICROFLUIDICS Wan, X.; Houwman, E. P.; Steenwelle, R.; van Schaijk, R.; Nguyen, M. D.; Dekkers, M.; Rijnders,

8 41301 (2014)

G. “Enhanced piezoelectric properties of (110)-oriented PbZr1-xTi xO3 epitaxial thin films on silicon substrates at shifted morphotropic phase boundary” APPLIED PHYSICS LETTERS

Zijlstra, Niels; Claessens, Mireille M. A. E.; Blum, Christian; Subramaniam, Vinod “Elucidating

104 92902 (2014)

the Aggregation Number of Dopamine-Induced alpha-Synuclein Oligomeric Assemblies” BIOPHYSICAL JOURNAL 106 440 - 446 (2014)

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[SCIENTIFIC PUBLICATIONS] Bosch, Peter J.; Kanger, Johannes S.; Subramaniam, Vinod “Classification of Dynamical

Vasantha, Vivek Arjunan; Jana, Satyasankar; Parthiban, Anbanandam; Vancso, Julius G.

Diffusion States in Single Molecule Tracking Microscopy” BIOPHYSICAL JOURNAL 107 588

“Water swelling, brine soluble imidazole based zwitterionic polymers - synthesis and study

- 598 (2014)

of reversible UCST behaviour and gel-sol transitions” CHEMICAL COMMUNICATIONS 50 46 - 48 (2014)

Bosch, Peter J.; Correa, Ivan R., Jr.; Sonntag, Michael H.; Ibach, Jenny; Brunsveld, Luc; Kanger, Johannes S.; Subramaniam, Vinod “Evaluation of Fluorophores to Label SNAP-Tag Fused

Sui, Xiaofeng; Shui, Lingling; Cui, Jin; Xie, Yanbo; Song, Jing; van den Berg, Albert; Hempenius,

Proteins for Multicolor Single-Molecule Tracking Microscopy in Live Cells” BIOPHYSICAL

Mark A.; Vancso, G. Julius “Redox-responsive organometallic microgel particles prepared

JOURNAL 107 803 - 814 (2014)

from poly(ferrocenylsilane)s generated using microfluidics” CHEMICAL COMMUNICATIONS 50 3058 - 3060 (2014)

Iyer, Aditya; Petersen, Nils O.; Claessens, Mireille M. A. E.; Subramaniam, Vinod “Amyloids of Alpha-Synuclein Affect the Structure and Dynamics of Supported Lipid Bilayers”

Grana-Suarez, Laura; Verboom, Willem; Huskens, Jurriaan “Cyclodextrin-based supra­

BIOPHYSICAL JOURNAL 106 2585 - 2594 (2014)

molecular nanoparticles stabilized by balancing attractive host-guest and repulsive electro­static interactions” CHEMICAL COMMUNICATIONS 50 7280 - 7282 (2014)

Shabestari, Maryam Hashemi; Kumar, Pravin; Segers-Nolten, Ine M. J.; Claessens, Mireille M. A. E.; van Rooijen, Bart D.; Subramaniam, Vinod; Huber, Martina “Long-Range Distance

Cookney, Joanna; Ogieglo, Wojciech; Hrabanek, Pavel; Vankelecom, Ivo; Fila, Vlastimil;

Constraints for the Fibril Fold of Parkinson's Protein Alpha-Synuclein” BIOPHYSICAL

Benes, Nieck E. “Dynamic response of ultrathin highly dense ZIF-8 nanofilms” CHEMICAL

JOURNAL 106 268A (2014)

COMMUNICATIONS 50 11698 - 11700 (2014)

Semerdzhiev, Slav; Claessens, Mireille; Subramaniam, Vinod “The Formation of Higher Order

Voskuhl, J.; Sankaran, S.; Jonkheijm, P. “Optical control over bioactive ligands at supra­

Structures by the Neuronal Protein Alpha-Synuclein: Self-Assembly Over Multiple Length

molecular surfaces” CHEMICAL COMMUNICATIONS 50 15144 - 15147 (2014)

Scales” BIOPHYSICAL JOURNAL 106 683A - 684A (2014) Mengers, Harro; Benes, Nieck E.; Nijmeijer, Kitty “Multi-component mass transfer behavior in van Kan-Davelaar, H. E.; van Hest, J. C. M.; Cornelissen, J. J. L. M.; Koay, M. S. T. “Using viruses

catalytic membrane reactors” CHEMICAL ENGINEERING SCIENCE 117 45 - 54 (2014)

as nanomedicines” BRITISH JOURNAL OF PHARMACOLOGY 171 4001 - 4009 (2014) Wu, Hairong; Sotthewes, Kai; Mendez-Ardoy, Alejandro; Kudernac, Tibor; Huskens, Jurriaan; Baltrusaitis, J.; Jansen, I.; Christus, J. D. Schuttlefield “Renewable energy based catalytic CH4

Lenferink, Aufried; Otto, Cees; Schon, Peter M.; Vancso, G. Julius; Zandvliet, Harold J.

conversion to fuels” CATALYSIS SCIENCE & TECHNOLOGY 4 2397 - 2411 (2014)

W. “Dynamics of oligo(phenylene-ethynylene) self-assembled monolayers on Au(111)” CHEMICAL PHYSICS LETTERS 614 45 - 48 (2014)

Luo, Sha; He, Songbo; Li, XianRu; Sun, Chenglin; Seshan, K. “Carbon covered alumina prepared by the pyrolysis of sucrose: A promising support material for the supported Pt-Sn

Luque, Daniel; de la Escosura, Andres; Snijder, Joost; Brasch, Melanie; Burnley, Rebecca

bimetallic dehydrogenation catalysts” CATALYSIS TODAY 234 295 - 300 (2014)

J.; Koay, Melissa S. T.; Carrascosa, Jose L.; Wuite, Gijs J. L.; Roos, Wouter H.; Heck, Albert J. R.; Cornelissen, Jeroen J. L. M.; Torres, Tomas; Caston, Jose R. “Self-assembly and

van den Dries, Koen; Bolomini-Vittori, Matteo; Cambi, Alessandra “Spatiotemporal organization

characterization of small and monodisperse dye nanospheres in a protein cage” CHEMICAL

and mechanosensory function of podosomes” CELL ADHESION & MIGRATION 8 268 - 272 (2014)

SCIENCE 5 575 - 581 (2014)

Nguyen, Minh D.; Trinh, Thong Q.; Dekkers, Matthijn; Houwman, Evert P.; Vu, Hung N.; Rijnders,

Brinkmann, Jenny; Cavatorta, Emanuela; Sankaran, Shrikrishnan; Schmidt, Bettina; van

Guus “Effect of dopants on ferroelectric and piezoelectric properties of lead zirconate titanate

Weerd, Jasper; Jonkheijm, Pascal “About supramolecular systems for dynamically probing

thin films on Si substrates” CERAMICS INTERNATIONAL 40 1013 - 1018 (2014)

cells” CHEMICAL SOCIETY REVIEWS 43 4449 - 4469 (2014)

Wang, Zhongbing; Li, Zhenbo; Zhang, Yi; Zhang, Ruyian; Qin, Pan; Chen, Chunnian; Winnubst,

Raaijmakers, Michiel J. T.; Wessling, Matthias; Nijmeijer, Arian; Benes, Nieck E. “Hybrid

Louis “Preparation and electrical properties of Ni0.6Mn2.4-xSn xO4 NTC ceramics” CERAMICS

Polyhedral Oligomeric Silsesquioxanes-Imides with Tailored Intercage Spacing for Sieving

INTERNATIONAL 40 4875 - 4878 (2014)

of Hot Gases” CHEMISTRY OF MATERIALS 26 3660 - 3664 (2014)

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[SCIENTIFIC PUBLICATIONS] Daday, Csaba; Koenig, Carolin; Neugebauer, Johannes; Filippi, Claudia “Wavefunction in

Van Bui, H.; Nguyen, M. D.; Wiggers, F. B.; Aarnink, A. A. I.; de Jong, M. P.; Kovalgin, A. Y. “Self-

Density Functional Theory Embedding for Excited States: Which Wavefunctions, which

Limiting Growth and Thickness- and Temperature-Dependence of Optical Constants of ALD

Densities?” CHEMPHYSCHEM 15 3205 - 3217 (2014)

AlN Thin Films” ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY 3 P101 - P106 (2014)

Krabbenborg, Sven O.; van Weerd, Jasper; Karperien, Marcel; Jonkheijm, Pascal; Huskens, Jurriaan “Locked-in Biomimetic Surface Gradients that are Tunable in Size, Density and

Sridhar, Adithya; van den Berg, Albert; Le Gac, Severine “Non-Invasive Monitoring of

Functionalization” CHEMPHYSCHEM 15 3460 - 3465 (2014)

Osteogenic Differentiation on Microtissue Arrays under Physiological Conditions Using Scanning Electrochemical Microscopy” ELECTROANALYSIS 26 1881 - 1885 (2014)

Baltrusaitis, Jonas; Hu, Yong-Sheng; McFarland, Eric W.; Hellman, Anders “Photo­electro­ chemical Hydrogen Production on

-Fe2O3 (0001): Insights from Theory and Experiments”

CHEMSUSCHEM 7 162 - 171 (2014)

Vermaas, David A.; Saakes, Michel; Nijmeijer, Kitty “Early detection of preferential channeling in reverse electrodialysis” ELECTROCHIMICA ACTA 117 9 - 17 (2014)

Neirynck, Pauline; Brinkmann, Jenny; Milroy, Lech-Gustav; Jonkheijm, Pascal; Brunsveld,

Karabudak, Engin “Micromachined silicon attenuated total reflectance infrared spectro­scopy:

Luc “Supramolecular chemistry in biodevices” CHIMICA OGGI-CHEMISTRY TODAY 32 58 - 61

An emerging detection method in micro/nanofluidics” ELECTROPHORESIS 35 236 - 244 (2014)

(2014) Schoeman, Rogier M.; Kemna, Evelien W. M.; Wolbers, Floor; van den Berg, Albert “HighChinnasamy, Thiruppathiraja; Segerink, Loes I.; Nystrand, Mats; Gantelius, Jesper; Svahn,

throughput deterministic single-cell encapsulation and droplet pairing, fusion, and

Helene Andersson “Point-of-Care Vertical Flow Allergen Microarray Assay: Proof of Concept”

shrinkage in a single microfluidic device” ELECTROPHORESIS 35 385 - 392 (2014)

CLINICAL CHEMISTRY 60 1209 - 1216 (2014) Vermaas, David A.; Veerman, Joost; Saakes, Michel; Nijmeijer, Kitty “Influence of multi­valent Quintana, Robert; Janczewski, Dominik; Vasantha, Vivek Arjunan; Jana, Satyasankar; Lee,

ions on renewable energy generation in reverse electrodialysis” ENERGY & ENVIRON­

Serina Siew Chen; Parra-Velandia, Fernando Jose; Guo, Shifeng; Parthiban, Anbanandam;

MENTAL SCIENCE 7 1434 - 1445 (2014)

Teo, Serena Lay-Ming; Vancso, G. Julius “Sulfobetaine-based polymer brushes in marine environment: Is there an effect of the polymerizable group on the antifouling performance?”

Varcoe, John R.; Atanassov, Plamen; Dekel, Dario R.; Herring, Andrew M.; Hickner, Michael

COLLOIDS AND SURFACES B-BIOINTERFACES 120 118 - 124 (2014)

A.; Kohl, Paul. A.; Kucernak, Anthony R.; Mustain, William E.; Nijmeijer, Kitty; Scott, Keith; Xu, Tongwen; Zhuang, Lin “Anion-exchange membranes in electrochemical energy systems”

Botchev, M. A.; Oseledets, I. V.; Tyrtyshnikov, E. E. “Iterative across-time solution of linear

ENERGY & ENVIRONMENTAL SCIENCE 7 3135 - 3191 (2014)

differential equations: Krylov subspace versus waveform relaxation” COMPUTERS & MATHEMATICS WITH APPLICATIONS 67 2088 - 2098 (2014)

Vermaas, David A.; Kunteng, Damnearn; Veerman, Joost; Saakes, Michel; Nijmeijer, Kitty “Periodic Feedwater Reversal and Air Sparging As Antifouling Strategies in Reverse

Laird, Rebecca C.; Nguyen, Nam P.; Rusch, Sara F.; Baltrusaitis, Jonas; MacGillivray, Leonard

Electrodialysis” ENVIRONMENTAL SCIENCE & TECHNOLOGY 48 3065 - 3073 (2014)

R. “Noncentrosymmetric Packings Influenced by Electronic Properties of Products of Click Reactions” CRYSTAL GROWTH & DESIGN 14 893 - 896 (2014)

Yip, Ngai Yin; Vermaas, David A.; Nijmeijer, Kitty; Elimelech, Menachem “Thermodynamic, Energy Efficiency, and Power Density Analysis of Reverse Electrodialysis Power Generation

Voskuhl, Jens; Brinkmann, Jenny; Jonkheijm, Pascal “Advances in contact printing techno­

with Natural Salinity Gradients” ENVIRONMENTAL SCIENCE & TECHNOLOGY 48 4925 -

logies of carbohydrate, peptide and protein arrays” CURRENT OPINION IN CHEMICAL

4936 (2014)

BIOLOGY 18 1 - 7 (2014) Sanchez-Sanchez, Lorena; Cadena-Nava, Ruben D.; Palomares, Laura A.; Ruiz-Garcia, Jaime; Campi, Gaetano; Ciasca, Gabriele; Poccia, Nicola; Ricci, Alessandro; Fratini, Michela;

Koay, Melissa S. T.; Cornelissen, Jeroen J. M. T.; Vazquez-Duhalt, Rafael “Chemotherapy

Bianconi, Antonio “Controlling Photoinduced Electron Transfer Via Defects Self-Organization

pro-drug activation by biocatalytic virus-like nanoparticles containing cytochrome P450”

for Novel Functional Macromolecular Systems” CURRENT PROTEIN & PEPTIDE SCIENCE 15

ENZYME AND MICROBIAL TECHNOLOGY 60 24 - 31 (2014)

394 - 399 (2014)

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[SCIENTIFIC PUBLICATIONS] Samal, D.; Tan, Haiyan; Takamura, Y.; Siemons, W.; Verbeeck, Jo; Van Tendeloo, G.; Arenholz, E.;

Chaudhary, Himanshu; Stefanovic, Anja N. D.; Subramaniam, Vinod; Claessens, Mireille M.

Jenkins, C. A.; Rijnders, G.; Koster, Gertjan “Direct structural and spectroscopic investigation

A. E. “Membrane interactions and fibrillization of alpha-synuclein play an essential role in

of ultrathin films of tetragonal CuO: Six-fold coordinated copper” EPL 105 17003 (2014)

membrane disruption” FEBS LETTERS 588 4457 - 4463 (2014)

Kandhai-Ragunath, Jasveen J.; Jorstad, Harald T.; de Wagenaar, Bjorn; de Man, Frits H. A.

Peter, Sebastien; Zell, Martina B.; Blum, Christian; Stuhl, Alexander; Elgass, Kirstin; Sackrow,

F.; Stoel, Martin G.; van Es, Jan; Doelman, Cees J. A.; Doggen, Carine J. M.; Peters, Ron J. G.;

Marcus; Subramaniam, Vinod; Mexiner, Alfred J.; Harter, Klaus; Maurino, Veronica G.;

von Birgelen, Clemens “Assessment of the relation between initial culprit vessel patency in

Schleifenbaum, Frank E. “Photosynthesis in a different light: spectro-microscopy for in vivo

acute ST-elevation myocardial infarction and endothelial function” EUROINTERVENTION 10

characterization of chloroplasts” FRONTIERS IN PLANT SCIENCE 5 292 (2014)

784 - 791 (2014) Luding, S.; Tomas, J. “Particles, contacts, bulk-behavior” GRANULAR MATTER 16 279 - 280 (2014) Ansari, Seraj A.; Mohapatra, Prasanta K.; Sengupta, Arijit; Nikishkin, Nicolai I.; Huskens, Jurriaan; Verboom, Willem “An Insight into the Complexation of Pyrazine-Functionalized

Fuchs, Regina; Weinhart, Thomas; Meyer, Jan; Zhuang, Hao; Staedler, Thorsten; Jiang, Xin;

Calix[4]arenes with Am3+ and Eu3+ - Solvent Extraction and Luminescence Studies in Room-

Luding, Stefan “Rolling, sliding and torsion of micron-sized silica particles: experimental,

Temperature Ionic Liquids” EUROPEAN JOURNAL OF INORGANIC CHEMISTRY 5689 - 5697

numerical and theoretical analysis” GRANULAR MATTER 16 281 - 297 (2014)

(2014) de Vlieger, D. J. M.; Lefferts, L.; Seshan, K. “Ru decorated carbon nanotubes - a promising Gonzalez, S.; Thornton, A. R.; Luding, S. “Free cooling phase-diagram of hard-spheres with

catalyst for reforming bio-based acetic acid in the aqueous phase” GREEN CHEMISTRY 16

short- and long-range interactions” EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS 223

864 - 874 (2014)

2205 - 2225 (2014) Hemkemeyer, Sandra A.; Schwarzer, Caroline; Boiani, Michele; Ehmcke, Jens; Le Gac, Harting, J.; Frijters, S.; Ramaioli, M.; Robinson, M.; Wolf, D. E.; Luding, S. “Recent advances

Severine; Schlatt, Stefan; Nordhoff, Verena “Effects of embryo culture media do not persist

in the simulation of particle-laden flows” EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS

after implantation: a histological study in mice” HUMAN REPRODUCTION 29 220 - 233 (2014)

223 2253 - 2267 (2014) Zhuang, Leimeng; Hoekman, Marcel; Oldenbeuving, Ruud M.; Boller, Klaus-J.; Roeloffzen, Krause, K. J.; Mathwig, K.; Wolfrum, B.; Lemay, S. G. “Brownian motion in electrochemical

Chris G. H. “CRIT-Alternative Narrow-Passband Waveguide Filter for Microwave Photonic

nanodevices” EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS 223 3165 - 3178 (2014)

Signal Processors” IEEE PHOTONICS TECHNOLOGY LETTERS 26 1034 - 1037 (2014)

de Grooth, Ions; Ogieglo, Wojciech; de Vos, Wiebe M.; Girones, Miriam; Nijmeijer, Kitty;

Kaleli, Buket; Hueting, Raymond J. E.; Nguyen, Minh D.; Wolters, Rob A. M. “Integration

Benes, Nieck E. “Swelling dynamics of zwitterionic copolymers: The effects of concentration

of a Piezoelectric Layer on Si FinFETs for Tunable Strained Device Applications” IEEE

and type of anion and cation” EUROPEAN POLYMER JOURNAL 55 57 - 65 (2014)

TRANSACTIONS ON ELECTRON DEVICES 61 1929 - 1935 (2014)

Neppalli, Ramesh; Causin, Valerio; Benetti, Edmondo Maria; Ray, Suprakas Sinha; Esposito,

Boksteen, Boni K.; Ferrara, Alessandro; Heringa, Anco; Steeneken, Peter G.; Hueting,

Antonella; Wanjale, Santosh; Birajdar, Mallinath; Saiter, Jean-Marc; Marigo, Antonio “Polystyrene/

Raymond J. E. “Impact of Interface Charge on the Electrostatics of Field-Plate Assisted

TiO2 composite electrospun fibers as fillers for poly(butylene succinate-co-adipate): Structure,

RESURF Devices” IEEE TRANSACTIONS ON ELECTRON DEVICES 61 2859 - 2866 (2014)

morphology and properties” EUROPEAN POLYMER JOURNAL 50 78 - 86 (2014) Khalil, Islam S. M.; Abelmann, Leon; Misra, Sarthak “Magnetic-Based Motion Control of Janczewski, Dominik; Song, Jing; Vancso, G. Julius “Colloidal, water soluble probes

Paramagnetic Microparticles With Disturbance Compensation” IEEE TRANSACTIONS ON

constructed with quantum dots and amphiphilic poly(ferrocenylsilane) for smart redox

MAGNETICS 50 5400110 (2014)

sensing” EUROPEAN POLYMER JOURNAL 54 87 - 94 (2014) Liu, Tong; He, Wei; Huang, Hua; Wang, Siwei; Bouwmeester, Henny J. M.; Chen, Chusheng Stefanovic, Anja N. D.; Stockl, Martin T.; Claessens, Mireille M. A. E.; Subramaniam, Vinod

“Ce0.8Sm0.2O1.9-La0.8Sr0.2Cr0.5Fe0.5O3-d Dual-Phase Hollow Fiber Membranes Operated under

“alpha-Synuclein oligomers distinctively permeabilize complex model membranes” FEBS

Different Gradients” INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 53 6131 - 6136

JOURNAL 281 2838 - 2850 (2014)

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[SCIENTIFIC PUBLICATIONS] Veldhuis, Sjoerd A.; Vijselaar, Wouter J. C.; Stawski, Tomasz M.; ten Elshof, Johan E. “Formation

Fraters, Bindikt D.; Cavaliere, Emanuele; Mul, Guido; Gavioli, Luca “Synthesis of photocatalytic

of Nanocrystalline Barium Titanate in Benzyl Alcohol at Room Temperature” INORGANIC

TiO2 nano-coatings by supersonic cluster beam deposition” JOURNAL OF ALLOYS AND

CHEMISTRY 53 13188 - 13196 (2014)

COMPOUNDS 615 S467 - S471 (2014)

Boutsioukis, C.; Kastrinakis, E.; Lambrianidis, T.; Verhaagen, B.; Versluis, M.; van der Sluis,

Besselink, Rogier; ten Elshof, Johan E. “Mass-fractal growth in niobia/silsesquioxane

L. W. M. “Formation and removal of apical vapor lock during syringe irrigation: a combined

mixtures: a small-angle X-ray scattering study” JOURNAL OF APPLIED CRYSTALLOGRAPHY

experimental and Computational Fluid Dynamics approach” INTERNATIONAL ENDODONTIC

47 1606 - 1613 (2014)

JOURNAL 47 191 - 201 (2014)

Gao, A.; Lee, C. J.; Bijkerk, F. “Graphene defect formation by extreme ultraviolet generated

Boutsioukis, C.; Psimma, Z.; Kastrinakis, E. “The effect of flow rate and agitation technique

photoelectrons” JOURNAL OF APPLIED PHYSICS 116 54312 (2014)

on irrigant extrusion ex vivo” INTERNATIONAL ENDODONTIC JOURNAL 47 487 - 496 (2014) Legrain, A.; Janson, T. G.; Berenschot, J. W.; Abelmann, L.; Tas, N. R. “Controllable elasto­ Macedo, R. G.; Robinson, J. P.; Verhaagen, B.; Walmsley, A. D.; Versluis, M.; Cooper, P. R.;

capillary folding of three-dimensional micro-objects by through-wafer filling” JOURNAL OF

van der Sluis, L. W. M. “A novel methodology providing insights into removal of biofilm-

APPLIED PHYSICS 115 214905 (2014)

mimicking hydrogel from lateral morphological features of the root canal during irrigation procedures” INTERNATIONAL ENDODONTIC JOURNAL 47 1040 - 1051 (2014)

Groenesteijn, J.; Droogendijk, H.; Wiegerink, R. J.; Lammerink, T. S. J.; Lotters, J. C.; Sanders, R. G. P.; Krijnen, G. J. M. “Parametric amplification in a micro Coriolis mass flow sensor”

Janoschek, Florian; Harting, Jens; Toschi, Federico “Toward a continuum model for

JOURNAL OF APPLIED PHYSICS 115 194503 (2014)

particle-induced velocity fluctuations in suspension flow through a stenosed geometry” INTERNATIONAL JOURNAL OF MODERN PHYSICS C 25 1441013 (2014)

Veligura, Vasilisa; Hlawacek, Gregor; Jahn, Uwe; van Gastel, Raoul; Zandvliet, Harold J. W.; Poelsema, Bene “Creation and physical aspects of luminescent patterns using helium ion

Fonteyne, Margot; Fussell, Andrew Luke; Vercruysse, Jurgen; Vervaet, Chris; Remon,

microscopy” JOURNAL OF APPLIED PHYSICS 115 183502 (2014)

Jean Paul; Strachan, Clare; Rades, Thomas; De Beer, Thomas “Distribution of binder in granules produced by means of twin screw granulation” INTERNATIONAL JOURNAL OF

Kou, Zhaoxia; Zhang, Wen; Wang, Yukun; Wong, Ping Kwan Johnny; Huang, Haibo; Ji, Cheng;

PHARMACEUTICS 462 8 - 10 (2014)

Yue, Jinjin; Zhang, Dong; Zhai, Ya; Zhai, Hongru “One-dimensional zinc ferrite nano-chains synthesis by chemical self-assembly assistant by magnetic field” JOURNAL OF APPLIED

Indermun, Sunaina; Choonara, Yahya E.; Kumar, Pradeep; du Toit, Lisa C.; Modi, Girish;

PHYSICS 115 17B524 (2014)

Luttge, Regina; Pillay, Viness “An interfacially plasticized electro-responsive hydrogel for transdermal electro-activated and modulated (TEAM) drug delivery” INTERNATIONAL

Kuznetsov, A. S.; Gleeson, M. A.; Bijkerk, F. “Temperature dependencies of hydrogen-induced

JOURNAL OF PHARMACEUTICS 462 52 - 65 (2014)

blistering of thin film multilayers” JOURNAL OF APPLIED PHYSICS 115 173510 (2014)

Roelofs, Susan H.; van Soestbergen, Michiel; Odijk, Mathieu; Eijkel, Jan C. T.; van den Berg,

Yakunin, S. N.; Makhotkin, I. A.; van de Kruijs, R. W. E.; Chuev, M. A.; Pashaev, E. M.; Zoethout,

Albert “Effect of pH waves on capacitive charging in microfluidic flow channels” IONICS 20

E.; Louis, E.; Seregin, S. Yu.; Subbotin, I. A.; Novikov, D. V.; Bijkerk, F.; Kovalchuk, M. V. “Model

1315 - 1322 (2014)

independent x-ray standing wave analysis of periodic multilayer structures” JOURNAL OF APPLIED PHYSICS 115 134303 (2014)

Iwata, Nobuyuki; Watabe, Yuta; Oikawa, Takahiro; Takase, Kouichi; Huijben, Mark; Inaba, Takaaki; Oshima, Keisuke; Rijnders, Guus; Yamamoto, Hiroshi “In-plain electric properties

Tudor, Cicerone; te Riet, Joost; Eich, Christina; Harkes, Rolf; Smisdom, Nick; Wenger, Jessica

of [CaMnO3/REMO3] (RE = Bi, La M = Fe, Fe0.8Mn0.2) superlattices grown by pulsed laser

Bouhuijzen; Ameloot, Marcel; Holt, Matthew; Kanger, Johannes S.; Figdor, Carl G.; Cambi,

deposition method” JAPANESE JOURNAL OF APPLIED PHYSICS 53 05FB20 (2014)

Alessandra; Subramaniam, Vinod “Syntenin-1 and Ezrin Proteins Link Activated Leukocyte Cell Adhesion Molecule to the Actin Cytoskeleton” JOURNAL OF BIOLOGICAL CHEMISTRY

Watabe, Yuta; Iwata, Nobuyuki; Oikawa, Takahiro; Hashimoto, Takuya; Huijben, Mark;

289 13445 - 13460 (2014)

Rijnders, Guus; Yamamoto, Hiroshi “Fabrication and crystal structure of [ABO3/REMO3] (A

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= Ca, La, B = Fe, Mn, RE = Bi, La, M = Fe, Fe0.8Mn0.2) superlattices grown by pulsed laser

Hamdy, Mohamed S.; Saputera, Wibawa H.; Groenen, Edgar J.; Mul, Guido “A novel TiO2 composite

deposition method” JAPANESE JOURNAL OF APPLIED PHYSICS 53 05FB12 (2014)

for photocatalytic wastewater treatment” JOURNAL OF CATALYSIS 310 75 - 83 (2014)

[SCIENTIFIC PUBLICATIONS] Zhao, Y.; Baeza, J. A.; Rao, N. Koteswara; Calvo, L.; Gilarranz, M. A.; Li, Y. D.; Lefferts, L.

Moroni, S.; Saccani, S.; Filippi, C. “Practical Schemes for Accurate Forces in Quantum Monte

“Unsupported PVA- and PVP-stabilized Pd nanoparticles as catalyst for nitrite hydrogenation

Carlo” JOURNAL OF CHEMICAL THEORY AND COMPUTATION 10 4823 - 4829 (2014)

in aqueous phase” JOURNAL OF CATALYSIS 318 162 - 169 (2014) Guareschi, Riccardo; Floris, Franca Maria; Amovilli, Claudio; Filippi, Claudia “Solvent Effects on Amrollahi, Rezvaneh; Hamdy, Mohamed S.; Mul, Guido “Understanding promotion of photo­

Excited-State Structures: A Quantum Monte Carlo and Density Functional Study” JOURNAL OF

catalytic activity of TiO2 by Au nanoparticles” JOURNAL OF CATALYSIS 319 194 - 199 (2014)

CHEMICAL THEORY AND COMPUTATION 10 5528 - 5537 (2014)

Garcia-Parajo, Maria F.; Cambi, Alessandra; Torreno-Pina, Juan A.; Thompson, Nancy; Jacobson,

Ansari, Seraj A.; Mohapatra, Prasanta K.; Iqbal, Mudassir; Huskens, Jurriaan; Verboom,

Ken “Nanoclustering as a dominant feature of plasma membrane organization” JOURNAL OF

Willem “Two novel extraction chromatography resins containing multiple diglycolamide-

CELL SCIENCE 127 4995 - 5005 (2014)

functionalized ligands: Preparation, characterization and actinide uptake properties” JOURNAL OF CHROMATOGRAPHY A 1334 79 - 86 (2014)

Davies, Gary B.; Krueger, Timm; Coveney, Peter V.; Harting, Jens “Detachment energies of spheroidal particles from fluid-fluid interfaces” JOURNAL OF CHEMICAL PHYSICS 141

Fracchia, Francesco; Filippi, Claudia; Amovilli, Claudio “Multi-level Quantum Monte Carlo Wave

154902 (2014)

Functions for Complex Reactions: The Decomposition of alpha-Hydroxy-Dimethylnitrosamine” JOURNAL OF COMPUTATIONAL CHEMISTRY 35 30 - 38 (2014)

Ilie, Ioana M.; den Otter, Wouter K.; Briels, Wim J. “Rotational Brownian Dynamics simulations of clathrin cage formation” JOURNAL OF CHEMICAL PHYSICS 141 65101 (2014)

Indermun, Sunaina; Luttge, Regina; Choonara, Yahya E.; Kumar, Pradeep; du Toit, Lisa C.; Modi, Girish; Pillay, Viness “Current advances in the fabrication of microneedles for transdermal

Jankowski, Maciej; Wormeester, Herbert; Zandvliet, Harold J. W.; Poelsema, Bene “Desorption of

delivery” JOURNAL OF CONTROLLED RELEASE 185 130 - 138 (2014)

oxygen from alloyed Ag/Pt(111)” JOURNAL OF CHEMICAL PHYSICS 140 234705 (2014) Chopra, A.; Panda, E.; Kim, Y.; Arredondo, M.; Hesse, D. “Epitaxial ferroelectric Pb(Mg1/3Nb2/3) Ogarko, Vitaliy; Rivas, Nicolas; Luding, Stefan “Communication: Structure characterization of

O3-PbTiO3 thin films on La0.7Sr0.3MnO3 bottom electrode” JOURNAL OF ELECTROCERAMICS 32

hard sphere packings in amorphous and crystalline states” JOURNAL OF CHEMICAL PHYSICS

404 - 408 (2014)

140 211102 (2014) Macedo, Ricardo; Verhaagen, Bram; Rivas, David Fernandez; Versluis, Michel; Wesselink, Paul; Friedlein, R.; Van Bui, H.; Wiggers, F. B.; Yamada-Takamura, Y.; Kovalgin, A. Y.; de Jong, M. P.

van der Sluis, Luc “Cavitation Measurement during Sonic and Ultrasonic Activated Irrigation”

“Interaction of epitaxial silicene with overlayers formed by exposure to Al atoms and O2

JOURNAL OF ENDODONTICS 40 580 - 583 (2014)

molecules” JOURNAL OF CHEMICAL PHYSICS 140 204705 (2014) Macedo, Ricardo Gomes; Herrero, Noemi Pascual; Wesselink, Paul; Versluis, Michel; van der Friedlein, R.; Fleurence, A.; Aoyagi, K.; de Jong, M. P.; Van Bui, H.; Wiggers, F. B.; Yoshimoto, S.;

Sluis, Luc “Influence of the Dentinal Wall on the pH of Sodium Hypochlorite during Root Canal

Koitaya, T.; Shimizu, S.; Noritake, H.; Mukai, K.; Yoshinobu, J.; Yamada-Takamura, Y. “Core level

Irrigation” JOURNAL OF ENDODONTICS 40 1005 - 1008 (2014)

excitations-A fingerprint of structural and electronic properties of epitaxial silicene” JOURNAL OF CHEMICAL PHYSICS 140 184704 (2014)

Munirathinam, Rajesh; Huskens, Jurriaan; Verboom, Willem “Piperazine-Containing Polymer Brush Layer as Supported Base Catalyst in a Glass Microreactor” JOURNAL OF FLOW

Floris, Franca Maria; Filippi, Claudia; Amovilli, Claudio “Electronic excitations in a dielectric

CHEMISTRY 4 135 - 139 (2014)

continuum solvent with quantum Monte Carlo: Acrolein in water” JOURNAL OF CHEMICAL PHYSICS 140 34109 (2014)

Ostilla-Monico, Rodolfo; van der Poel, Erwin P.; Verzicco, Roberto; Grossmann, Siegfried; Lohse, Detlef “Exploring the phase diagram of fully turbulent Taylor-Couette flow” JOURNAL OF FLUID

Readi, O. M. Kattan; Rolevink, E.; Nijmeijer, K. “Mixed matrix membranes for process

MECHANICS 761 1 - 26 (2014)

intensification in electrodialysis of amino acids” JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY 89 425 - 435 (2014)

Ostilla-Monico, Rodolfo; Huisman, Sander G.; Jannink, Tim J. G.; Van Gils, Dennis P. M.; Verzicco, Roberto; Grossmann, Siegfried; Sun, Chao; Lohse, Detlef “Optimal Taylor-Couette flow: radius ratio dependence” JOURNAL OF FLUID MECHANICS 747 1 - 29 (2014)

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[SCIENTIFIC PUBLICATIONS] Tunuguntla, D. R.; Bokhove, O.; Thornton, A. R. “A mixture theory for size and density segregation

Steinhart, Martin; ten Elshof, Johan E. “Electrochemical synthesis of coaxial TiO2-Ag

in shallow granular free-surface flows” JOURNAL OF FLUID MECHANICS 749 99 - 112 (2014)

nanowires and their application in photocatalytic water splitting” JOURNAL OF MATERIALS CHEMISTRY A 2 2648 - 2656 (2014)

Biferale, L.; Meneveau, C.; Verzicco, R. “Deformation statistics of sub-Kolmogorov-scale ellipsoidal neutrally buoyant drops in isotropic turbulence” JOURNAL OF FLUID MECHANICS

Thoreton, V.; Hu, Y.; Pirovano, C.; Capoen, E.; Nuns, N.; Mamede, A. S.; Dezanneau, G.; Yoo, C.

754 184 - 207 (2014)

Y.; Bouwmeester, H. J. M.; Vannier, R. N. “Oxygen transport kinetics of the misfit layered oxide Ca3Co4O9+d” JOURNAL OF MATERIALS CHEMISTRY A 2 19717 - 19725 (2014)

Ostilla-Monico, Rodolfo; Verzicco, Roberto; Grossmann, Siegfried; Lohse, Detlef “Turbulence decay towards the linearly stable regime of Taylor-Couette flow” JOURNAL OF FLUID

Mejia-Ariza, Raquel; Huskens, Jurriaan “Formation of hybrid gold nanoparticle network

MECHANICS 748 R3 (2014)

aggregates by specific host-guest interactions in a turbulent flow reactor” JOURNAL OF MATERIALS CHEMISTRY B 2 210 - 216 (2014)

Lubbers, L. A.; Weijs, J. H.; Botto, L.; Das, S.; Andreotti, B.; Snoeijer, J. H. “Drops on soft solids: free energy and double transition of contact angles” JOURNAL OF FLUID MECHANICS 747

Cabanas-Danes, Jordi; Huskens, Jurriaan; Jonkheijm, Pascal “Chemical strategies for the

R1 (2014)

presentation and delivery of growth factors” JOURNAL OF MATERIALS CHEMISTRY B 2 2381 - 2394 (2014)

Milian, Jealemy Galindo; Brasch, Melanie; Anaya-Plaza, Eduardo; de la Escosura, Andres; Velders, Aldrik H.; Reinhoudt, David N.; Torres, Tomas; Koay, Melissa S. T.; Cornelissen, Jeroen

Chen, Jiawen; Lacaze, Emmanuelle; Brasselet, Etienne; Harutyunyan, Syuzanna R.; Katsonis,

J. L. M. “Self-assembly triggered by self-assembly: Optically active, paramagnetic micelles

Nathalie; Feringa, Ben L. “Textures of cholesteric droplets controlled by photo-switching

encapsulated in protein cage nanoparticles” JOURNAL OF INORGANIC BIOCHEMISTRY 136

chirality at the molecular level” JOURNAL OF MATERIALS CHEMISTRY C 2 8137 - 8141 (2014)

140 - 146 (2014) Pinheiro, Ana F. M.; Hoogendoorn, Danny; Nijmeijer, Arian; Winnubst, Louis “Development Millan, Jealemy Galindo; Brasch, Melanie; Anaya-Plaza, Eduardo; de la Escosura, Andres;

of a PDMS-grafted alumina membrane and its evaluation as solvent resistant nanofiltration

Velders, Aldrik H; Reinhoudt, David N; Torres, Tomas; Koay, Melissa S T; Cornelissen, Jeroen

membrane” JOURNAL OF MEMBRANE SCIENCE 463 24 - 32 (2014)

J L M “Self-assembly triggered by self-assembly: optically active, paramagnetic micelles encapsulated in protein cage nanoparticles.” Journal of inorganic biochemistry 136 140 - 6

Shahid, Salman; Nijmeijer, Kitty “High pressure gas separation performance of mixed-matrix

(2014)

polymer membranes containing mesoporous Fe(BTC)” JOURNAL OF MEMBRANE SCIENCE 459 33 - 44 (2014)

Sengupta, Arijit; Godbole, Shrikant V.; Mohapatra, Prasanta K.; Iqbal, Mudassir; Huskens, Jurriaan; Verboom, Willem “Judd-Ofelt parameters of diglycolamide-functionalized calix[4]

Kaufman, Y.; Grinberg, S.; Linder, C.; Heldman, E.; Gilron, J.; Shen, Yue-Xiao; Kumar, M.;

arene Eu3+ complexes in room temperature ionic liquid for structural analysis: Effects of

Lammertink, R. G. H.; Freger, V. “Towards supported bolaamphiphile membranes for water

solvents and ligand stereochemistry” JOURNAL OF LUMINESCENCE 148 174 - 180 (2014)

filtration: Roles of lipid and substrate” JOURNAL OF MEMBRANE SCIENCE 457 50 - 61 (2014)

Sengupta, Arijit; Mohapatra, Prasanta K.; Iqbal, Mudassir; Huskens, Jurriaan; Verboom,

Ogieglo, Wojciech; Upadhyaya, Lakshmeesha; Wessling, Matthias; Nijmeijer, Arian; Benes,

Willem

Nieck E. “Effects of time, temperature, and pressure in the vicinity of the glass transition of a

“Spectroscopic

investigations

of

Eu3+-complexes

with

ligands

containing

multiple diglycolamide pendant arms in a room temperature ionic liquid” JOURNAL OF

swollen polymer” JOURNAL OF MEMBRANE SCIENCE 464 80 - 85 (2014)

LUMINESCENCE 154 392 - 401 (2014) Guler, Enver; Elizen, Rianne; Saakes, Michel; Nijmeijer, Kitty “Micro-structured membranes Wang, Yunlong; Hu, Bobing; Zhu, Zhuoying; Bouwmeester, Henny J. M.; Xia, Changrong

for electricity generation by reverse electrodialysis” JOURNAL OF MEMBRANE SCIENCE

“Electrical conductivity relaxation of Sr2Fe1.5Mo0.5O6-d -Sm0.2Ce0.8O1.9 dual-phase composites”

458 136 - 148 (2014)

JOURNAL OF MATERIALS CHEMISTRY A 2 136 - 143 (2014) Shahid, Salman; Nijmeijer, Kitty “Performance and plasticization behavior of polymer-MOF

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Maijenburg, A. Wouter; Veerbeek, Janneke; de Putter, Roy; Veldhuis, Sjoerd A.; Zoontjes,

membranes for gas separation at elevated pressures” JOURNAL OF MEMBRANE SCIENCE

Michel G. C.; Mul, Guido; Montero-Moreno, Josep M.; Nielsch, Kornelius; Schaefer, Helmut;

470 166 - 177 (2014)

[SCIENTIFIC PUBLICATIONS] Chen, Wei; Chen, Chu-sheng; Bouwmeester, Henny J. M.; Nijmeijer, Arian; Winnubst,

Dijkstra, Marcel; Lammerink, Theo S. J.; de Boer, Meint J.; Berenschot, Erwin J. W.; Wiegerink,

Louis “Oxygen-selective membranes integrated with oxy-fuel combustion” JOURNAL OF

Remco J.; Elwenspoek, Miko “Thermal Flow-Sensor Drift Reduction by Thermopile Voltage

MEMBRANE SCIENCE 463 166 - 172 (2014)

Cancellation via Power Feedback Control” JOURNAL OF MICROELECTROMECHANICAL SYSTEMS 23 908 - 917 (2014)

Escalona, Ivonne; de Grooth, Joris; Font, Josep; Nijmeijer, Kitty “Removal of BPA by enzyme polymerization using NF membranes” JOURNAL OF MEMBRANE SCIENCE 468 192 - 201 (2014)

Groen, Maarten S.; Wu, Kai; Brookhuis, Robert A.; van Houwelingen, Marc J.; Brouwer, Dannis M.; Lotters, Joost C.; Wiegerink, Remco J. “A piezoelectric micro control valve with integrated

Kezia, Kezia; Lee, Judy; Ogieglo, Wojciech; Hill, Anita; Benes, Nieck E.; Kentish, Sandra E.

capacitive sensing for ambulant blood pressure waveform monitoring” JOURNAL OF

“The transport of hydronium and hydroxide ions through reverse osmosis membranes”

MICROMECHANICS AND MICROENGINEERING 24 125020 (2014)

JOURNAL OF MEMBRANE SCIENCE 459 197 - 206 (2014) Geerlings, J.; Sarajlic, E.; Berenschot, J. W.; Siekman, M. H.; Jansen, H. V.; Abelmann, L.; Tas, Guler, Enver; van Baak, Willem; Saakes, Michel; Nijmeijer, Kitty “Monovalent-ion-selective

N. R. “Design and fabrication of in-plane AFM probes with sharp silicon nitride tips based

membranes for reverse electrodialysis” JOURNAL OF MEMBRANE SCIENCE 455 254 - 270

on refilling of anisotropically etched silicon moulds” JOURNAL OF MICROMECHANICS AND

(2014)

MICROENGINEERING 24 105013 (2014)

Galama, A. H.; Vermaas, D. A.; Veerman, J.; Saakes, M.; Rijnaarts, H. H. M.; Post, J. W.; Nijmeijer,

Dijkstra, M.; Lammerink, T. S. J.; Pjetri, O.; de Boer, M. J.; Berenschot, J. W.; Wiegerink, R. J.;

K. “Membrane resistance: The effect of salinity gradients over a cation exchange membrane”

Elwenspoek, M. C. “Thermal-wave balancing flow sensor with low-drift power feedback”

JOURNAL OF MEMBRANE SCIENCE 467 279 - 291 (2014)

JOURNAL OF MICROMECHANICS AND MICROENGINEERING 24 55016 (2014)

He, Wei; Huang, Hua; Gao, Jian-fen; Winnubst, Louis; Chen, Chu-sheng “Phase-inversion tape

Brookhuis, R. A.; Droogendijk, H.; de Boer, M. J.; Sanders, R. G. P.; Lammerink, T. S. J.; Wiegerink,

casting and oxygen permeation properties of supported ceramic membranes” JOURNAL OF

R. J.; Krijnen, G. J. M. “Six-axis force-torque sensor with a large range for biomechanical

MEMBRANE SCIENCE 452 294 - 299 (2014)

applications” JOURNAL OF MICROMECHANICS AND MICROENGINEERING 24 35015 (2014)

Farsi, Ali; Boffa, Vittorio; Qureshi, Hammad F.; Nijmeijer, Arian; Winnubst, Louis; Christensen,

Nyabero, Steven L.; van de Kruijs, Robbert W. E.; Yakshin, Andrey E.; Makhotkin, Igor A.; Bosgra,

Morten Lykkegaard “Modeling water flux and salt rejection of mesoporous gamma-alumina and

Jeroen; Bijkerk, Fred “Diffusion-induced structural changes in La/B-based multilayers for 6.7-

microporous organosilica membranes” JOURNAL OF MEMBRANE SCIENCE 470 307 - 315 (2014)

nm radiation” JOURNAL OF MICRO-NANOLITHOGRAPHY MEMS AND MOEMS 13 13014 (2014)

Vermaas, David A.; Saakes, Michel; Nijmeijer, Kitty “Enhanced mixing in the diffusive

Hamdy, Mohamed S. “One-step synthesis of M-doped TiO2 nanoparticles in TUD-1 (M-TiO2-TUD-1,

boundary layer for energy generation in reverse electrodialysis” JOURNAL OF MEMBRANE

M = Cr or V) and their photocatalytic performance under visible light irradiation” JOURNAL OF

SCIENCE 453 312 - 319 (2014)

MOLECULAR CATALYSIS A-CHEMICAL 393 39 - 46 (2014)

Kappel, C.; Kemperman, A. J. B.; Temmink, H.; Zwijnenburg, A.; Rijnaarts, H. H. M.; Nijmeijer,

Indermun, Sunaina; Choonara, Yahya E.; Kumar, Pradeep; Du Toit, Lisa C.; Modi, Girish;

K. “Impacts of NF concentrate recirculation on membrane performance in an integrated MBR

Luttge, Regina; Pillay, Viness “Patient-Controlled Analgesia: Therapeutic Interventions Using

and NF membrane process for wastewater treatment” JOURNAL OF MEMBRANE SCIENCE

Transdermal Electro-Activated and Electro-Modulated Drug Delivery” JOURNAL OF PHARMA­

453 359 - 368 (2014)

CEUTICAL SCIENCES 103 353 - 366 (2014)

Tanardi, Cheryl R.; Pinheiro, Ana F. M.; Nijmeijer, Arian; Winnubst, Louis “PDMS grafting of

Kappert, Emiel J.; Bouwmeester, Henny J. M.; Benes, Nieck E.; Nijmeijer, Arian “Kinetic Analysis

mesoporous gamma-alumina membranes for nanofiltration of organic solvents” JOURNAL OF

of the Thermal Processing of Silica and Organosilica” JOURNAL OF PHYSICAL CHEMISTRY B

MEMBRANE SCIENCE 469 471 - 477 (2014)

118 5270 - 5277 (2014)

Wibisono, Y.; Cornelissen, E. R.; Kemperman, A. J. B.; van der Meer, W. G. J.; Nijmeijer, K. “Two-

Agarwal, S.; Zhu, X.; Hensen, E. J. M.; Lefferts, L.; Mojet, B. L. “Defect Chemistry of Ceria Nanorods”

phase flow in membrane processes: A technology with a future” JOURNAL OF MEMBRANE

JOURNAL OF PHYSICAL CHEMISTRY C 118 4131 - 4142 (2014)

SCIENCE 453 566 - 602 (2014)

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[SCIENTIFIC PUBLICATIONS] Hazrati, Ebrahim; Brocks, Geert; de Wijs, Gilles A. “Carbon Support Effects on the Hydrogen

Veligura, V.; Hlawacek, G.; van Gastel, R.; Zandvliet, H. J. W.; Poelsema, B. “A high resolution

Storage Properties of LiBH4 Nanoparticles: A First-Principles Study” JOURNAL OF PHYSICAL

ionoluminescence study of defect creation and interaction” JOURNAL OF PHYSICS-CONDENSED

CHEMISTRY C 118 5102 - 5109 (2014)

MATTER 26 165401 (2014)

Wiedemair, Justyna; Loan Le Thi Ngoc; van den Berg, Albert; Carlen, Edwin T. “Surface-

Manna, Kaustuv; Samal, D.; Bera, A. K.; Elizabeth, Suja; Yusuf, S. M.; Kumar, P. S. Anil

Enhanced Raman Spectroscopy of Self-Assembled Monolayer Conformation and Spatial

“Correspondence between neutron depolarization and higher order magnetic susceptibility

Uniformity on Silver Surfaces” JOURNAL OF PHYSICAL CHEMISTRY C 118 11857 - 11868

to investigate ferromagnetic clusters in phase separated systems” JOURNAL OF PHYSICS-

(2014)

CONDENSED MATTER 26 16002 (2014)

Pan, Qing; Mecozzi, Francesco; Korterik, Jeroen P.; Sharma, Divya; Herek, Jennifer L.; Vos,

Vriezekolk, Erik J.; de Weerd, Eddy; de Vos, Wiebe M.; Nijmeijer, Kitty “Control of Pore Size and

Johannes G.; Browne, Wesley R.; Huijser, Annemarie “Directionality of Ultrafast Electron

Pore Uniformity in Films Based on Self-Assembling Block Copolymers” JOURNAL OF POLYMER

Transfer in a Hydrogen Evolving Ru-Pd-Based Photocatalyst” JOURNAL OF PHYSICAL

SCIENCE PART B-POLYMER PHYSICS 52 1568 - 1579 (2014)

CHEMISTRY C 118 20799 - 20806 (2014) Stevens, Richard J. A. M.; Meneveau, Charles “Temporal structure of aggregate power Seddon, James R. T. “Conservative and Dissipative Interactions of Ionic Liquids in Nano­

fluctuations in large-eddy simulations of extended wind-farms” JOURNAL OF RENEWABLE AND

confinement” JOURNAL OF PHYSICAL CHEMISTRY C 118 22197 - 22201 (2014)

SUSTAINABLE ENERGY 6 43102 (2014)

Mampallil, Dileep; Mathwig, Klaus; Kang, Shuo; Lemay, Serge G. “Reversible Adsorption

Stevens, Richard J. A. M.; Gayme, Dennice F.; Meneveau, Charles “Large eddy simulation studies

of Outer-Sphere Redox Molecules at Pt Electrodes” JOURNAL OF PHYSICAL CHEMISTRY

of the effects of alignment and wind farm length” JOURNAL OF RENEWABLE AND SUSTAINABLE

LETTERS 5 636 - 640 (2014)

ENERGY 6 23105 (2014)

Stopel, Martijn H. W.; Blum, Christian; Subramaniam, Vinod “Excitation Spectra and Stokes

Veldhuis, Sjoerd A.; Brinks, Peter; Stawski, Tomasz M.; Goebel, Ole F.; ten Elshof, Johan E. “A facile

Shift Measurements of Single Organic Dyes at Room Temperature” JOURNAL OF PHYSICAL

method for the density determination of ceramic thin films using X-ray reflectivity” JOURNAL OF

CHEMISTRY LETTERS 5 3259 - 3264 (2014)

SOL-GEL SCIENCE AND TECHNOLOGY 71 118 - 128 (2014)

Chopra, Anuj; Kim, Yunseok; Alexe, Marin; Hesse, Dietrich “Piezoelectric non-linearity in

Besselink, Rogier; Venkatachalam, Sabarinathan; van Wuellen, Leo; ten Elshof, Johan E.

PbSc0.5Ta0.5O3 thin films” JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 75 1229 - 1233

“Incorporation of niobium into bridged silsesquioxane based silica networks” JOURNAL OF SOL-

(2014)

GEL SCIENCE AND TECHNOLOGY 70 473 - 481 (2014)

Dolgov, A.; Lopaev, D.; Rachimova, T.; Kovalev, A.; Vasil'eva, A.; Lee, C. J.; Krivtsun, V. M.;

Campi, G.; Ricci, A.; Poccia, N.; Bianconi, A. “Imaging Spatial Ordering of the Oxygen Chains

Yakushev, O.; Bijkerk, F. “Comparison of H2 and He carbon cleaning mechanisms in extreme

in YBa2Cu3O6+y at the Insulator-to-Metal Transition” JOURNAL OF SUPERCONDUCTIVITY AND

ultraviolet induced and surface wave discharge plasmas” JOURNAL OF PHYSICS D-APPLIED

NOVEL MAGNETISM 27 987 - 990 (2014)

PHYSICS 47 65205 (2014) Ricci, A.; Joseph, B.; Poccia, N.; Campi, G.; Saini, N. L.; Bianconi, A. “Temperature Depen­ Blank, Dave H. A.; Dekkers, Matthijn; Rijnders, Guus “Pulsed laser deposition in Twente: from

dence of √2 x √2 Phase in Superconducting K0.8Fe1.6Se2 Single Crystal” JOURNAL OF SUPER­

research tool towards industrial deposition” JOURNAL OF PHYSICS D-APPLIED PHYSICS 47

CONDUCTIVITY AND NOVEL MAGNETISM 27 1003 - 1007 (2014)

34006 (2014) Verhaagen, B.; Boutsioukis, C.; van der Sluis, L. W. M.; Versluis, M. “Acoustic streaming induced Bampoulis, P.; Zhang, L.; Safaei, A.; van Gastel, R.; Poelsema, B.; Zandvliet, H. J. W. “Germanene

by an ultrasonically oscillating endodontic file” JOURNAL OF THE ACOUSTICAL SOCIETY OF

termination of Ge2Pt crystals on Ge(110)” JOURNAL OF PHYSICS-CONDENSED MATTER 26

AMERICA 135 1717 - 1730 (2014)

442001 (2014)

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[SCIENTIFIC PUBLICATIONS] van Weerd, Jasper; Krabbenborg, Sven O.; Eijkel, Jan; Karperien, Marcel; Huskens, Jurriaan;

Droogendijk, H.; Brookhuis, R. A.; de Boer, M. J.; Sanders, R. G. P.; Krijnen, G. J. M. “Towards a

Jonkheijm, Pascal “On-Chip Electrophoresis in Supported Lipid Bilayer Membranes Achieved

biomimetic gyroscope inspired by the fly's haltere using microelectromechanical systems

Using Low Potentials” JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 136 100 - 103 (2014)

technology” JOURNAL OF THE ROYAL SOCIETY INTERFACE 11 20140573 (2014)

Raaijmakers, Michiel J. T.; Hempenius, Mark A.; Schon, Peter M.; Vancso, G. Julius; Nijmeijer,

Droogendijk, H.; de Boer, M. J.; Sanders, R. G. P.; Krijnen, G. J. M. “A biomimetic accelerometer

Arian; Wessling, Matthias; Benes, Nieck E. “Sieving of Hot Gases by Hyper-Cross-Linked

inspired by the cricket's clavate hair” JOURNAL OF THE ROYAL SOCIETY INTERFACE 11

Nanoscale-Hybrid Membranes” JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 136 330 -

20140438 (2014)

335 (2014) Droogendijk, H; Brookhuis, R A; de Boer, M J; Sanders, R G P; Krijnen, G J M “Towards a Hamdy, Mohamed S.; Amrollahi, Rezvaneh; Sinev, Ilya; Mei, Bastian; Mul, Guido “Strategies

biomimetic gyroscope inspired by the fly's haltere using microelectromechanical systems

to Design Efficient Silica-Supported Photocatalysts for Reduction of CO2” JOURNAL OF THE

technology.” Journal of the Royal Society, Interface / the Royal Society 11 (2014)

AMERICAN CHEMICAL SOCIETY 136 594 - 597 (2014) Gazquez, G. C.; Chen, H.; Solmaz, A.; Boukamp, B. A.; Ten Elshof, J. E.; Moroni, L. “Flexible Rurup, W. Frederik; Snijder, Joost; Koay, Melissa S. T.; Heck, Albert J. R.; Cornelissen, Jeroen

and osteoinductive Yttrium Stabilized Zirconia scaffold for bone regeneration” JOURNAL OF

J. L. M. “Self-Sorting of Foreign Proteins in a Bacterial Nanocompartment” JOURNAL OF THE

TISSUE ENGINEERING AND REGENERATIVE MEDICINE 8 117 - 118 (2014)

AMERICAN CHEMICAL SOCIETY 136 3828 - 3832 (2014) Van Dalen, M. C.; Karperien, M.; Subramaniam, V.; Claessens, M. M.; Post, J. N. “Protein fibrils Feng, Xueling; Sui, Xiaofeng; Hempenius, Mark A.; Vancso, G. Julius “Electrografting of

for cartilage tissue engineering” JOURNAL OF TISSUE ENGINEERING AND REGENERATIVE

Stimuli-Responsive, Redox Active Organometallic Polymers to Gold from Ionic Liquids”

MEDICINE 8 361 - 362 (2014)

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 136 7865 - 7868 (2014) Xie, Sijia; Schurink, Bart; Wolbers, Floor; Luttge, Regina; Hassink, Gerco “Nanoscaffold's Cabanas-Danes, Jordi; Rodrigues, Emilie Dooms; Landman, Ellie; Van Weerd, Jasper; van

stiffness affects primary cortical cell network formation” JOURNAL OF VACUUM SCIENCE &

Blitterswijk, Clemens; Verrips, Theo; Huskens, Jurriaan; Karperien, Marcel; Jonkheijm,

TECHNOLOGY B 32 06FD03 (2014)

Pascal “A Supramolecular Host-Guest Carrier System for Growth Factors Employing VHH Fragments” JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 136 12675 - 12681 (2014)

Hlawacek, Gregor; Veligura, Vasilisa; van Gastel, Raoul; Poelsema, Bene “Helium ion microscopy” JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B 32 20801 (2014)

Lohne, Orjan Fossmark; Tan Nhut Phung; Grande, Tor; Bouwmeester, Henny J. M.; Hendriksen, Peter Vang; Sogaard, Martin; Wiik, Kjell “Oxygen Non-Stoichiometry and Electrical

Garmann, Rees F.; Comas-Garcia, Mauricio; Koay, Melissa S. T.; Cornelissen, Jeroen J. L. M.;

Conductivity of La0.2Sr0.8Fe0.8B0.2O3- , B= Fe, Ti, Ta” JOURNAL OF THE ELECTROCHEMICAL

Knobler, Charles M.; Gelbart, William M. “Role of Electrostatics in the Assembly Pathway of a

SOCIETY 161 F176 - F184 (2014)

Single-Stranded RNA Virus” JOURNAL OF VIROLOGY 88 10472 - 10479 (2014)

Schulze-Kueppers, E.; Baumann, S.; Tietz, F.; Bouwmeester, H. J. M.; Meulenberg, W. A.

de Beer, Sissi; Kutnyanszky, Edit; Muser, Martin H; Vancso, G Julius “Preparation and friction

“Towards the fabrication of La0.98-xSrxCo0.2Fe0.8O3- perovskite-type oxygen transport

force microscopy measurements of immiscible, opposing polymer brushes.” Journal of

membranes” JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 34 3741 - 3748 (2014)

visualized experiments : JoVE (2014)

Hoekstra, Hugo J. W. M.; Hammer, Manfred “General relation for group delay and the

Dral, A Petra; Dubbink, David; Nijland, Maarten; ten Elshof, Johan E; Rijnders, Guus; Koster,

relevance of group delay for refractometric sensing” JOURNAL OF THE OPTICAL SOCIETY

Gertjan “Atomically defined templates for epitaxial growth of complex oxide thin films.”

OF AMERICA B-OPTICAL PHYSICS 31 1561 - 1567 (2014)

Journal of visualized experiments : JoVE (2014)

Yada, Keiji; Golubov, Alexander A.; Tanaka, Yukio; Kashiwaya, Satoshi “Microscopic Theory

Fussell, Andrew L; Kleinebudde, Peter; Herek, Jennifer; Strachan, Clare J; Offerhaus, Herman

of Tunneling Spectroscopy in Sr2RuO4” JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 83

L “Coherent anti-Stokes Raman scattering (CARS) microscopy visualizes pharmaceutical

74706 (2014)

tablets during dissolution.” Journal of visualized experiments : JoVE (2014)

(99)

[SCIENTIFIC PUBLICATIONS] Maijenburg, A Wouter; Rodijk, Eddy J B; Maas, Michiel G; Ten Elshof, Johan E “Preparation

Yildirim, Ender; Trietsch, Sebastiaan J.; Joore, Jos; van den Berg, Albert; Hankemeier, Thomas;

and use of photocatalytically active segmented Ag|ZnO and coaxial TiO2-Ag nanowires

Vulto, Paul “Phaseguides as tunable passive microvalves for liquid routing in complex

made by templated electrodeposition.” Journal of visualized experiments : JoVE (2014)

microfluidic networks” LAB ON A CHIP 14 3334 - 3340 (2014)

de Beer, Sissi; Kutnyanszky, Edit; Mueser, Martin H.; Vancso, G. Julius “Preparation and

Kieviet, Bernard D.; Schon, Peter M.; Vancso, G. Julius “Stimulus-responsive polymers and other

Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes” JOVE-

functional polymer surfaces as components in glass microfluidic channels” LAB ON A CHIP 14

JOURNAL OF VISUALIZED EXPERIMENTS e52285 (2014)

4159 - 4170 (2014)

Dral, A. Petra; Dubbink, David; Nijland, Maarten; ten Elshof, Johan E.; Rijnders, Guus; Koster,

Xie, Yanbo; de Boer, Hans L.; Sprenkels, Ad J.; van den Berg, Albert; Eijkel, Jan C. T. “Pressure-

Gertjan “Atomically Defined Templates for Epitaxial Growth of Complex Oxide Thin Films”

driven ballistic Kelvin's water dropper for energy harvesting” LAB ON A CHIP 14 4171 - 4177

JOVE-JOURNAL OF VISUALIZED EXPERIMENTS e52209 (2014)

(2014)

Fussell, Andrew L.; Kleinebudde, Peter; Herek, Jennifer; Strachan, Clare J.; Offerhaus, Herman L.

Bomer, Johan G.; Prokofyev, Alexander V.; van den Berg, Albert; Le Gac, Severine “Wafer-scale

“Coherent anti-Stokes Raman Scattering (CARS) Microscopy Visualizes Pharmaceutical Tablets

fabrication of glass-FEP-glass microfluidic devices for lipid bilayer experiments” LAB ON A CHIP

During Dissolution” JOVE-JOURNAL OF VISUALIZED EXPERIMENTS e51847 (2014)

14 4461 - 4464 (2014)

Maijenburg, A. Wouter; Rodijk, Eddy J. B.; Maas, Michiel G.; ten Elshof, Johan E. “Preparation and

Zhu, Xiaoying; Guo, Shifeng; Janczewski, Dominik; Velandia, Fernando Jose Parra; Teo, Serena

Use of Photocatalytically Active Segmented Ag vertical bar ZnO and Coaxial TiO2-Ag Nanowires

Lay-Ming; Vancso, G. Julius “Multilayers of Fluorinated Amphiphilic Polyions for Marine Fouling

Made by Templated Electrodeposition” Jove-Journal of Visualized Experiments e51547 (2014)

Prevention” LANGMUIR 30 288 - 296 (2014)

de Ruiter, Rielle; Pit, Arjen M.; de Oliveira, Vitor Martins; Duits, Michel H. G.; van den Ende,

Aaronson, Barak D. B.; Lai, Stanley C. S.; Unwin, Patrick R. “Spatially Resolved Electrochemistry

Dirk; Mugele, Frieder “Electrostatic potential wells for on-demand drop manipulation in micro­

in Ionic Liquids: Surface Structure Effects on Triiodide Reduction at Platinum Electrodes”

channels” LAB ON A CHIP 14 883 - 891 (2014)

LANGMUIR 30 1915 - 1919 (2014)

Harink, Bjorn; Le Gac, Severine; Barata, David; van Blitterswijk, Clemens; Habibovic, Pamela

Mendez-Ardoy, Alejandro; Steentjes, Tom; Kudemac, Tibor; Huskens, Jurriaan “Self-Assembled

“Microtiter plate-sized standalone chip holder for microenvironmental physiological control in

Monolayers on Gold of beta-Cyclodextrin Adsorbates with Different Anchoring Groups”

gas-impermeable microfluidic devices” LAB ON A CHIP 14 1816 - 1820 (2014)

LANGMUIR 30 3467 - 3476 (2014)

Sukas, Sertan; Schreuder, Erik; de Wagenaar, Bjorn; Swennenhuis, Joost; van den Berg, Albert;

de Grooth, Joris; Dong, Mo; de Vos, Wiebe M.; Nijmeijer, Kitty “Building Polyzwitterion-Based

Terstappen, Leon; Le Gac, Severine “A novel side electrode configuration integrated in fused

Multilayers for Responsive Membranes” LANGMUIR 30 5152 - 5161 (2014)

silica microsystems for synchronous optical and electrical spectroscopy” LAB ON A CHIP 14 1821 - 1825 (2014)

Ahmad, I.; Zandvliet, H. J. W.; Kooij, E. S. “Shape-Induced Separation of Nanospheres and Aligned Nanorods” LANGMUIR 30 7953 - 7961 (2014)

Shui, Lingling; Hayes, Robert A.; Jin, Mingliang; Zhang, Xiao; Bai, Pengfei; van den Berg, Albert; Zhou, Guofu “Microfluidics for electronic paper-like displays” LAB ON A CHIP 14 2374 - 2384

de Beer, Sissi “Switchable Friction Using Contacts of Stimulus-Responsive and Nonresponding

(2014)

Swollen Polymer Brushes” LANGMUIR 30 8085 - 8090 (2014)

Frimat, J. -P.; Bronkhorst, M.; de Wagenaar, B.; Bomer, J. G.; van der Heijden, F.; van den Berg, A.;

de Vos, Wiebe M.; Cattoz, Beatrice; Avery, Michael P.; Cosgrove, Terence; Prescott, Stuart W.

Segerink, L. I. “Make it spin: individual trapping of sperm for analysis and recovery using micro-

“Adsorption and Surfactant-Mediated Desorption of Poly(vinylpyrrolidone) on Plasma- and

contact printing” LAB ON A CHIP 14 2635 - 2641 (2014)

Piranha-Cleaned Silica Surfaces” LANGMUIR 30 8425 - 8431 (2014)

Segerink, L. I.; Eijkel, J. C. T. “Nanofluidics in point of care applications” LAB ON A CHIP 14 3201 - 3205 (2014)

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[SCIENTIFIC PUBLICATIONS] Brzozowska, Agata M.; Parra-Velandia, Fernando J.; Quintana, Robert; Zhu Xiaoying; Lee, Serina

Hoog, Natalia A.; Mayer, Mateo J. J.; Miedema, Henk; Olthuis, Wouter; van den Berg, Albert

S. C.; Chin-Sing, Lim; Janczewski, Dominik; Teo, Serena L. -M.; Vancso, Julius G. “Biomimicking

“Coaxial Stub Resonator for Online Monitoring Early Stages of Corrosion” MATERIALS AND

Micropatterned Surfaces and Their Effect on Marine Biofouling” LANGMUIR 30 9165 - 9175

APPLICATIONS FOR SENSORS AND TRANSDUCERS III 605 111 (2014)

(2014) Nicosia, Carlo; Huskens, Jurriaan “Reactive self-assembled monolayers: from surface Peng, Shuhua; Lohse, Detlef; Zhang, Xuehua “Microwetting of Supported Graphene on

functionalization to gradient formation” MATERIALS HORIZONS 1 32 - 45 (2014)

Hydrophobic Surfaces Revealed by Polymerized Interfacial Femtodroplets” LANGMUIR 30 10043 - 10049 (2014)

Stoffelen, Carmen; Munirathinam, Rajesh; Verboom, Willem; Huskens, Jurriaan “Self-assembly of size-tunable supramolecular nanoparticle clusters in a microfluidic channel” MATERIALS HORIZONS 1 595 - 601 (2014)

Jansen, H. Patrick; Sotthewes, Kai; Ganser, Christian; Zandvliet, Harold J. W.; Teichert, Christian; Kooij, E. Stefan “Shape of Picoliter Droplets on Chemically Striped Patterned Substrates”

Masood, Muhammad Nasir; Carlen, Edwin T.; van den Berg, Albert “All-(111) surface silicon

LANGMUIR 30 11574 - 11581 (2014)

nanowire field effect transistor devices: Effects of surface preparations” MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING 27 758 - 764 (2014)

Sleczkowski, Piotr; Katsonis, Nathalie; Kapitanchuk, Oleksiy; Marchenko, Alexandr; Mathevet, Fabrice; Croset, Bernard; Lacaze, Emmanuelle “Emergence of Chirality in Hexagonally Packed

Droogendijk, H.; Dagamseh, A. M. K.; Sanders, R. G. P.; Yntema, D. R.; Krijnen, G. J. M.

Mono layers of Hexapentyloxytriphenylene on Au(111): A Joint Experimental and Theoretical

“Characterization of bio-inspired hair flow sensors for oscillatory airflows: techniques to

Study” LANGMUIR 30 13275 - 13282 (2014)

measure the response for both flow and pressure” MEASUREMENT SCIENCE & TECHNOLOGY 25 95005 (2014)

Nerngchamnong, Nisachol; Wu, Hairong; Sotthewes, Kai; Yuan, Li; Cao, Liang; Roemer, Max; Lu, Jiong; Loh, Kian Ping; Troadec, Cedric; Zandvliet, Harold J. W.; Nijhuis, Christian

Kaleli, B.; Nguyen, M. D.; Schmitz, J.; Wolters, R. A. M.; Hueting, R. J. E. “Analysis of thin-film

A. “Supramolecular Structure of Self-Assembled Mono layers of Ferrocenyl Terminated

PZT/LNO stacks on an encapsulated TiN electrode” MICROELECTRONIC ENGINEERING 119

n-Alkanethiolates on Gold Surfaces” LANGMUIR 30 13447 - 13455 (2014)

16 - 19 (2014)

Fan, Youwen; Oldenbeuving, Ruud M.; Klein, Edwin J.; Lee, Chris J.; Song, Hong; Khan, Muhammed

van Megen, M. J. J.; Bomer, J. G.; Olthuis, W.; van den Berg, A. “Solid state nanogaps for

R. H.; Offerhaus, Herman L.; van der Slot, Peter J. M.; Boller, Klaus-J. “A hybrid semiconductor-

electrochemical detection fabricated using edge lithography” MICROELECTRONIC

glass waveguide laser” LASER SOURCES AND APPLICATIONS II 9135 91351B (2014)

ENGINEERING 115 21 - 25 (2014)

Abbott, Stephen B.; de Vos, Wiebe M.; Mears, Laura L. E.; Barker, Robert; Richardson, Robert

Xie, Sijia; Luttge, Regina “Imprint lithography provides topographical nanocues to guide cell

M.; Prescott, Stuart W. “Hydration of Odd-Even Terminated Polyelectrolyte Multi layers under

growth in primary cortical cell culture” MICROELECTRONIC ENGINEERING 124 30 - 36 (2014)

Mechanical Confinement” MACROMOLECULES 47 3263 - 3273 (2014) Verhaagen, B.; Boutsioukis, C.; Sleutel, C. P.; Kastrinakis, E.; van der Sluis, L. W. M.; Versluis, Ogieglo, Wojciech; Wessling, Matthias; Benes, Nieck E. “Polymer Relaxations in Thin Films in

M. “Irrigant transport into dental microchannels” MICROFLUIDICS AND NANOFLUIDICS 16

the Vicinity of a Penetrant- or Temperature-Induced Glass Transition” MACROMOLECULES 47

1165 - 1177 (2014)

3654 - 3660 (2014) Castricum, Hessel L.; Paradis, Goulven G.; Mittelmeijer-Hazeleger, Marjo C.; Bras, Wim; de Beer, Sissi; Mueser, Martin H. “Friction in (Im-) Miscible Polymer Brush Systems and the

Eeckhaut, Guy; Vente, Jaap F.; Rothenberg, Gadi; ten Elshof, Johan E. “Tuning the nanopore

Role of Transverse Polymer Tilting” MACROMOLECULES 47 7666 - 7673 (2014)

structure and separation behavior of hybrid organosilica membranes” MICROPOROUS AND MESOPOROUS MATERIALS 185 224 - 234 (2014)

van Megen, M. J. J.; Olthuis, W.; van den Berg, A. “Submicron electrode gaps fabricated by gold electrodeposition at interdigitated electrodes” MATERIALS AND APPLICATIONS FOR

Dagamseh, A. M. K. “Estimation of squeeze film damping in artificial hair-sensor towards

SENSORS AND TRANSDUCERS III 605 107 - 110 (2014)

the

detection-limit

of

crickets'

hairs”

MICROSYSTEM

TECHNOLOGIES-MICRO-AND

NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS 20 963 - 970 (2014)

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[SCIENTIFIC PUBLICATIONS] Gentile, M. J.; Nunez-Sanchez, S.; Barnes, W. L. “Optical Field-Enhancement and

't Mannetje, Dieter; Ghosh, Somnath; Lagraauw, Rudy; Otten, Simon; Pit, Arjen; Berendsen,

Subwavelength Field-Confinement Using Excitonic Nanostructures” NANO LETTERS 14

Christian; Zeegers, Jos; van den Ende, Dirk; Mugele, Frieder “Trapping of drops by wetting

2339 - 2344 (2014)

defects” NATURE COMMUNICATIONS 5 3559 (2014)

de Groot, G. Wilhelmina; Demarche, Sophie; Santonicola, M. Gabriella; Tiefenauer, Louis;

Xie, Yanbo; Bos, Diederik; de Vreede, Lennart J.; de Boer, Hans L.; van der Meulen, Mark-Jan;

Vancso, G. Julius “Smart polymer brush nanostructures guide the self-assembly of pore-

Versluis, Michel; Sprenkels, Ad J.; van den Berg, Albert; Eijkel, Jan C. T. “High-efficiency ballistic

spanning lipid bilayers with integrated membrane proteins” NANOSCALE 6 2228 - 2237 (2014)

electrostatic generator using microdroplets” NATURE COMMUNICATIONS 5 3575 (2014)

Wimbush, Kim S.; Fratila, Raluca M.; Wang, Dandan; Qi, Dongchen; Liang, Cao; Yuan, Li;

Banerjee, N.; Smiet, C. B.; Smits, R. G. J.; Ozaeta, A.; Bergeret, F. S.; Blamire, M. G.; Robinson, J.

Yakovlev, Nikolai; Loh, Kian Ping; Reinhoudt, David N.; Velders, Aldrik H.; Nijhuis, Christian

W. A. “Evidence for spin selectivity of triplet pairs in superconducting spin valves” NATURE

A. “Bias induced transition from an ohmic to a non-ohmic interface in supramolecular

COMMUNICATIONS 5 3048 (2014)

tunneling junctions with Ga2O3/EGaIn top electrodes” NANOSCALE 6 11246 - 11258 (2014) Rijnders, Guus “OXIDE HETEROSTRUCTURES Atoms on the move” NATURE MATERIALS 13 844 Cumurcu, Aysegul; Feng, Xueling; Dos Ramos, Lionel; Hempenius, Mark A.; Schon, Peter; Vancso,

- 845 (2014)

G. Julius “Sub-nanometer expansions of redox responsive polymer films monitored by imaging ellipsometry” NANOSCALE 6 12089 - 12095 (2014)

Huskens, Jurriaan “DIFFUSION Molecular velcro in Flatland” NATURE NANOTECHNOLOGY 9 500 - 502 (2014)

Buyukkose, S.; Hernandez-Minguez, A.; Vratzov, B.; Somaschini, C.; Geelhaar, L.; Riechert, H.; van der Wiel, W. G.; Santos, P. V. “High-frequency acoustic charge transport in GaAs nanowires”

Carolan, Jacques; Meinecke, Jasmin D. A.; Shadbolt, Peter J.; Russell, Nicholas J.; Ismail, Nur;

NANOTECHNOLOGY 25 135204 (2014)

Worhoff, Kerstin; Rudolph, Terry; Thompson, Mark G.; O'Brien, Jeremy L.; Matthew, Jonathan C. F.; Laing, Anthony “On the experimental verification of quantum complexity in linear optics”

Ahmed, Waqqar; Glass, Christian; Kooij, E. Stefan; van Ruitenbeek, Jan M. “Tuning the oriented

NATURE PHOTONICS 8 621 - 626 (2014)

deposition of gold nanorods on patterned substrates” NANOTECHNOLOGY 25 35301 (2014) Pan, Y.; Wu, D.; Angevaare, J. R.; Luigjes, H.; Frantzeskakis, E.; de Jong, N.; van Heumen, Iamsaard, Supitchaya; Asshoff, Sarah J.; Matt, Benjamin; Kudernac, Tibor; Cornelissen, Jeroen

E.; Bay, T. V.; Zwartsenberg, B.; Huang, Y. K.; Snelder, M.; Brinkman, A.; Golden, M. S.; de

J. L. M.; Fletcher, Stephen P.; Katsonis, Nathalie “Conversion of light into macroscopic helical

Visser, A. “Low carrier concentration crystals of the topological insulator Bi2-xSbxTe3-ySey: a

motion” NATURE CHEMISTRY 6 229 - 235 (2014)

magnetotransport study” NEW JOURNAL OF PHYSICS 16 123035 (2014)

De Luca, G. M.; Ghiringhelli, G.; Perroni, C. A.; Cataudella, V.; Chiarella, F.; Cantoni, C.; Lupini,

Safaei, A.; Poelsema, B.; Zandvliet, H. J. W.; van Gastel, R. “Spinodal decomposition driven

A. R.; Brookes, N. B.; Huijben, M.; Koster, G.; Rijnders, G.; Salluzzo, M. “Ubiquitous long-range

formation of Pt-nanowires on Ge(001)” NEW JOURNAL OF PHYSICS 16 113052 (2014)

antiferromagnetic coupling across the interface between superconducting and ferromagnetic oxides” NATURE COMMUNICATIONS 5 5626 (2014)

Chen, Ting Lee; Dikken, Dirk Jan; Prangsma, Jord C.; Segerink, Frans; Herek, Jennifer L. “Characterization of Sierpinski carpet optical antenna at visible and near-infrared wavelengths”

de Beer, Sissi; Kutnyanszky, Edit; Schoen, Peter M.; Vancso, G. Julius; Mueser, Martin H.

NEW JOURNAL OF PHYSICS 16 93024 (2014)

“Solvent-induced immiscibility of polymer brushes eliminates dissipation channels” NATURE COMMUNICATIONS 5 3781 (2014)

Windows-Yule, C. R. K.; Rosato, A. D.; Rivas, N.; Parker, D. J. “Influence of initial conditions on granular dynamics near the jamming transition” NEW JOURNAL OF PHYSICS 16 63016 (2014)

Huisman, Sander G.; van der Veen, Roeland C. A.; Sun, Chao; Lohse, Detlef “Multiple states in highly turbulent Taylor-Couette flow” NATURE COMMUNICATIONS 5 3820 (2014)

Ricci, Alessandro; Poccia, Nicola; Campi, Gaetano; Coneri, Francesco; Barba, Luisa; Arrighetti, Gianmichele; Polentarutti, Maurizio; Burghammer, Manfred; Sprung, Michael;

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Lajoinie, Guillaume; Gelderblom, Erik; Chlon, Ceciel; Bohmer, Marcel; Steenbergen, Wiendelt;

Zimmermann, Martin V.; Bianconi, Antonio “Networks of superconducting nano-puddles in

de Jong, Nico; Manohar, Srirang; Versluis, Michel “Ultrafast vapourization dynamics of laser-

1/8 doped YBa2Cu3O6.5+y controlled by thermal manipulation” NEW JOURNAL OF PHYSICS 16

activated polymeric microcapsules” NATURE COMMUNICATIONS 5 3671 (2014)

53030 (2014)

[SCIENTIFIC PUBLICATIONS] Chopra, Anuj; Birajdar, Balaji I.; Berger, Andreas; Alexe, Marin; Hesse, Dietrich “Thickness-

Bayraktar, Muharrem; Chopra, Anuj; Rijnders, Guus; Boller, Klaus; Bijkerk, Fred “Wavefront

dependent cation order and disorder in PbSc0.5Ta0.5O3 thin films grown by pulsed laser

correction in the extreme ultraviolet wavelength range using piezoelectric thin films” OPTICS

deposition” NEW JOURNAL OF PHYSICS 16 13059 (2014)

EXPRESS 22 30623 - 30632 (2014)

Singh, A.; Magnanimo, V.; Luding, S. “Effect of friction on the force distribution in sheared

Huang, Qiushi; de Boer, Meint; Barreaux, Jonathan; van der Meer, Robert; Louis, Eric;

granular materials” NUMERICAL METHODS IN GEOTECHNICAL ENGINEERING, VOL 1 409 - 414

Bijkerk, Fred “High efficiency structured EUV multilayer mirror for spectral filtering of long

(2014)

wavelengths” OPTICS EXPRESS 22 (2014)

Hammer, Manfred; Maksimovic, Milan; Sefunc, Mustafa Akin; Stoffer, Remco “Preface: the 2013

Huang, Qiushi; Paardekooper, Daniel Mathijs; Zoethout, Erwin; Medvedev, V. V.; van de Kruijs,

international workshop on optical wave and waveguide theory and numerical modelling”

Robbert; Bosgra, Jeroen; Louis, Eric; Bijkerk, Fred “UV spectral filtering by surface structured

OPTICAL AND QUANTUM ELECTRONICS 46 381 - 383 (2014)

multilayer mirrors” OPTICS LETTERS 39 1185 - 1188 (2014)

Civitci, Fehmi; Hammer, Manfred; Hoekstra, Hugo J. W. M. “Semi-guided plane wave reflection

Fan, Y.; Oldenbeuving, R. M.; Khan, M. R. H.; Roeloffzen, C. G. H.; Klein, E. J.; Lee, C. J.; Offerhaus,

by thin-film transitions for angled incidence” OPTICAL AND QUANTUM ELECTRONICS 46 477

H. L.; Boller, K. -J. “Q-factor measurements through injection locking of a semiconductor-glass

- 490 (2014)

hybrid laser with unknown intracavity losses” OPTICS LETTERS 39 1748 - 1751 (2014)

Huber, S. P.; van de Kruijs, R. W. E.; Yakshin, A. E.; Zoethout, E.; Boller, K. -J.; Bijkerk, F. “Sub­

Van Dalfsen, K.; Aravazhi, S.; Grivas, C.; Garcia-Blanco, S. M.; Pollnau, M. “Thulium channel

wave­length single layer absorption resonance antireflection coatings” OPTICS EXPRESS 22

waveguide laser with 1.6 W of output power and similar to 80% slope efficiency” OPTICS

490 - 497 (2014)

LETTERS 39 4380 - 4383 (2014)

Leung, V. Y. F.; Lagendijk, A.; Tukker, T. W.; Mosk, A. P.; IJzerman, W. L.; Vos, W. L. “Interplay

Garbacik, Erik T.; Korterik, Jeroen P.; Otto, Cees; Herek, Jennifer L.; Offerhaus, Herman L.

between multiple scattering, emission, and absorption of light in the phosphor of a white light-

“Epi-detection of vibrational phase contrast coherent anti-Stokes Raman scattering” OPTICS

emitting diode” OPTICS EXPRESS 22 8190 - 8204 (2014)

LETTERS 39 5814 - 5817 (2014)

Huisman, Simon R.; Huisman, Thomas J.; Goorden, Sebastianus A.; Mosk, Allard P.; Pinkse,

Strudley, Tom; Akbulut, Duygu; Vos, Willem L.; Lagendijk, Ad; Mosk, Allard P.; Muskens, Otto

Pepijn W. H. “Programming balanced optical beam splitters in white paint” OPTICS EXPRESS

L. “Observation of intensity statistics of light transmitted through 3D random media” OPTICS

22 8320 - 8332 (2014)

LETTERS 39 6347 - 6350 (2014)

Bayraktar, Muharrem; van Goor, Fred A.; Boller, Klaus J.; Bijkerk, Fred “Spectral purification

Hommersom, C. A.; Matt, B.; van der Ham, A.; Cornelissen, J. J. L. M.; Katsonis, N. “Versatile

and infrared light recycling in extreme ultraviolet lithography sources” OPTICS EXPRESS 22

post-functionalization of the external shell of cowpea chlorotic mottle virus by using click

8633 - 8639 (2014)

chemistry” ORGANIC & BIOMOLECULAR CHEMISTRY 12 4065 - 4069 (2014)

Goorden, Sebastianus A.; Bertolotti, Jacopo; Mosk, Allard P. “Superpixel-based spatial amplitude

Kumar, Nishant; Imole, Olukayode I.; Magnanimo, Vanessa; Luding, Stefan “Effects of

and phase modulation using a digital micromirror device” OPTICS EXPRESS 22 17999 - 18009

polydispersity on the micro-macro behavior of granular assemblies under different

(2014)

deformation paths” PARTICUOLOGY 12 64 - 79 (2014)

Yakunin, S. N.; Makhotkin, I. A.; Nikolaev, K. V.; van de Kruijs, R. W. E.; Chuev, M. A.; Bijkerk,

Srivastava, S.; Yazdchi, K.; Luding, S. “Mesoscale dynamic coupling of finite- and discrete-

F. “Combined EUV reflectance and X-ray reflectivity data analysis of periodic multilayer

element methods for fluid-particle interactions” PHILOSOPHICAL TRANSACTIONS OF

structures” OPTICS EXPRESS 22 20076 - 20086 (2014)

THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES 372 20130386 (2014)

Vazquez-Cordova, Sergio A.; Dijkstra, Meindert; Bernhardi, Edward H.; Ay, Feridun; Worhoff, Kerstin; Herek, Jennifer L.; Garcia-Blanco, Sonia M.; Pollnau, Markus “Erbium-doped spiral amplifiers with 20 dB of net gain on silicon” OPTICS EXPRESS 22 25993 - 26004 (2014)

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[SCIENTIFIC PUBLICATIONS] Srivastava, S; Yazdchi, K; Luding, S “Mesoscale dynamic coupling of finite- and discrete-element

Woldering, Leon A.; Mosk, Allard P.; Vos, Willem L. “Design of a three-dimensional photonic

methods for fluid-particle interactions.” Philosophical transactions. Series A, Mathematical,

band gap cavity in a diamondlike inverse woodpile photonic crystal” PHYSICAL REVIEW B

physical, and engineering sciences 372 (2014)

90 115140 (2014)

Poccia, Nicola; Lankhorst, Martijn; Golubov, Alexander A. “Manifestation of percolation in high

Bakurskiy, S. V.; Golubov, A. A.; Kupriyanov, M. Yu.; Yada, K.; Tanaka, Y. “Anomalous surface

temperature superconductivity” PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS

states at interfaces in p-wave superconductors” PHYSICAL REVIEW B 90 64513 (2014)

503 82 - 88 (2014) Bokdam, Menno; Brocks, Geert; Katsnelson, M. I.; Kelly, Paul J. “Schottky barriers at hexagonal Lumeij, Marck; Gillessen, Michael; Bouwmeester, Henny; Markus, Torsten; Barthel, Juri; Roitsch,

boron nitride/metal interfaces: A first-principles study” PHYSICAL REVIEW B 90 85415 (2014)

Stefan; Mayerde, Joachim; Dronskowski, Richard “Influence of the Ba2+/Sr2+ content and oxygen

Humphrey, Alastair D.; Barnes, William L. “Plasmonic surface lattice resonances on arrays of

vacancies on the stability of cubic BaxSr1-xCo0.75Fe0.25O3-” PHYSICAL CHEMISTRY CHEMICAL

different lattice symmetry” PHYSICAL REVIEW B 90 75404 (2014)

PHYSICS 16 1333 - 1338 (2014) Veldhorst, M.; Hoek, M.; Snelder, M.; Hilgenkamp, H.; Golubov, A. A.; Brinkman, A. “Nonlocal Kas, Recep; Kortlever, Ruud; Milbrat, Alexander; Koper, Marc T. M.; Mul, Guido; Baltrusaitis,

spin-entangled Andreev reflection, fractional charge, and current-phase relations in

Jonas “Electrochemical CO2 reduction on Cu2O-derived copper nanoparticles: controlling the

topological bilayer-exciton-condensate junctions” PHYSICAL REVIEW B 90 35428 (2014)

catalytic selectivity of hydrocarbons” PHYSICAL CHEMISTRY CHEMICAL PHYSICS 16 12194 12201 (2014)

Drera, G.; Salvinelli, G.; Bondino, F.; Magnano, E.; Huijben, M.; Brinkman, A.; Sangaletti, L. “Intrinsic origin of interface states and band-offset profiling of nanostructured LaAlO3/

Chen, Chang-Hui; Meadows, Katherine E.; Cuharuc, Anatolii; Lai, Stanley C. S.; Unwin, Patrick

SrTiO3 heterojunctions probed by element-specific resonant spectroscopies” PHYSICAL

R. “High resolution mapping of oxygen reduction reaction kinetics at polycrystalline platinum

REVIEW B 90 35124 (2014)

electrodes” PHYSICAL CHEMISTRY CHEMICAL PHYSICS 16 18545 - 18552 (2014) Dalai, M. K.; Sekhar, B. R.; Biswas, D.; Thakur, S.; Chiang, T. -C.; Samal, D.; Martin, C.; Maiti, K. Svetovoy, V. B.; Palasantzas, G. “Graphene-on-Silicon Near-Field Thermophotovoltaic Cell”

“Valence-band study of Sm0.1Ca0.9-xSrxMnO3 using high-resolution ultraviolet photoelectron

PHYSICAL REVIEW APPLIED 2 34006 (2014)

spectroscopy” PHYSICAL REVIEW B 89 245131 (2014)

van der Bos, Arjan; van der Meulen, Mark-Jan; Driessen, Theo; van den Berg, Marc; Reinten,

Liew, Seng Fatt; Popoff, Sebastien M.; Mosk, Allard P.; Vos, Willem L.; Cao, Hui “Transmission

Hans; Wijshoff, Herman; Versluis, Michel; Lohse, Detlef “Velocity Profile inside Piezoacoustic

channels for light in absorbing random media: From diffusive to ballistic-like transport”

Inkjet Droplets in Flight: Comparison between Experiment and Numerical Simulation”

PHYSICAL REVIEW B 89 224202 (2014)

PHYSICAL REVIEW APPLIED 1 14004 (2014) Jankowski, Maciej; Wormeester, Herbert; Zandvliet, Harold J. W.; Poelsema, Bene Cakir, Deniz; Otalvaro, Diana M.; Brocks, Geert “Magnetoresistance in multilayer fullerene spin

“Temperature-dependent formation and evolution of the interfacial dislocation network of

valves: A first-principles study” PHYSICAL REVIEW B 90 245404 (2014)

Ag/Pt(111)” PHYSICAL REVIEW B 89 235402 (2014)

Bokdam, Menno; Brocks, Geert; Kelly, Paul J. “Large potential steps at weakly interacting metal-

Sedighi, M.; Svetovoy, V. B.; Broer, W. H.; Palasantzas, G. “Casimir forces from conductive

insulator interfaces” PHYSICAL REVIEW B 90 201411 (2014)

silicon carbide surfaces” PHYSICAL REVIEW B 89 195440 (2014)

Hazrati, E.; de Wijs, G. A.; Brocks, G. “Li intercalation in graphite: A van der Waals density-

Luo, C.; Feng, Z.; Fu, Y.; Zhang, W.; Wong, P. K. J.; Kou, Z. X.; Zhai, Y.; Ding, H. F.; Farle, M.; Du, J.;

functional study” PHYSICAL REVIEW B 90 155448 (2014)

Zhai, H. R. “Enhancement of magnetization damping coefficient of permalloy thin films with dilute Nd dopants” PHYSICAL REVIEW B 89 184412 (2014)

Korshunov, M. M.; Efremov, D. V.; Golubov, A. A.; Dolgov, O. V. “Unexpected impact of magnetic disorder on multiband superconductivity” PHYSICAL REVIEW B 90 134517 (2014)

Bokdam, Menno; Amlaki, Taher; Brocks, Geert; Kelly, Paul J. “Band gaps in incommensurable graphene on hexagonal boron nitride” PHYSICAL REVIEW B 89 201404 (2014)

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[SCIENTIFIC PUBLICATIONS] Wang, K.; Sanderink, J. G. M.; Bolhuis, T.; van der Wiel, W. G.; de Jong, M. P. “Tunneling

Sanli, Ceyda; Lohse, Detlef; van der Meer, Devaraj “From antinode clusters to node clusters:

anisotropic magnetoresistance in C-60-based organic spintronic systems” PHYSICAL

The concentration-dependent transition of floaters on a standing Faraday wave” PHYSICAL

REVIEW B 89 174419 (2014)

REVIEW E 89 53011 (2014)

Polyushkin, D. K.; Marton, I.; Racz, P.; Dombi, P.; Hendry, E.; Barnes, W. L. “Mechanisms of

Homan, Tess; Gjaltema, Christa; van der Meer, Devaraj “Collapsing granular beds: The role of

THz generation from silver nanoparticle and nanohole arrays illuminated by 100 fs pulses of

interstitial air” PHYSICAL REVIEW E 89 52204 (2014)

infrared light” PHYSICAL REVIEW B 89 125426 (2014) Imole, Olukayode I.; Wojtkowski, Mateusz; Magnanimo, Vanessa; Luding, Stefan “Micro-macro Cakir, Deniz; Otalvaro, Diana M.; Brocks, Geert “From spin-polarized interfaces to giant

correlations and anisotropy in granular assemblies under uniaxial loading and unloading”

magnetoresistance in organic spin valves” PHYSICAL REVIEW B 89 115407 (2014)

PHYSICAL REVIEW E 89 42210 (2014)

van Gastel, R.; Kaminski, D.; Vlieg, E.; Poelsema, B. “Temperature-dependent structure,

Santos, Andres; Yuste, Santos B.; Lopez de Haro, Mariano; Odriozola, Gerardo; Ogarko, Vitaliy

elasticity, and entropic stability of Bi phases on Cu{111}” PHYSICAL REVIEW B 89 75431

“Simple effective rule to estimate the jamming packing fraction of polydisperse hard spheres”

(2014)

PHYSICAL REVIEW E 89 40302 (2014)

Yeganegi, Elahe; Lagendijk, Ad; Mosk, Allard P.; Vos, Willem L. “Local density of optical

Weijs, Joost H.; Snoeijer, Jacco H.; Andreotti, Bruno “Capillarity of soft amorphous solids: A

states in the band gap of a finite one-dimensional photonic crystal” PHYSICAL REVIEW B

microscopic model for surface stress” PHYSICAL REVIEW E 89 42408 (2014)

89 45123 (2014) Liu, Yi; Yuan, Zhe; Wesselink, R J H; Starikov, Anton A; Kelly, Paul J “Interface enhancement of Takada, Satoshi; Saitoh, Kuniyasu; Hayakawa, Hisao “Simulation of cohesive fine powders

Gilbert damping from first principles.” Physical review letters 113 207202 - 207202 (2014)

under a plane shear” PHYSICAL REVIEW E 90 62207 (2014) Yuan, Zhe; Hals, Kjetil M. D.; Liu, Yi; Starikov, Anton A.; Brataas, Arne; Kelly, Paul J. “Gilbert Windows-Yule, C. R. K.; Rivas, N.; Parker, D. J.; Thornton, A. R. “Low-frequency oscillations

Damping in Noncollinear Ferromagnets” PHYSICAL REVIEW LETTERS 113 266603 (2014)

and convective phenomena in a density-inverted vibrofluidized granular system” PHYSICAL REVIEW E 90 62205 (2014)

Kleibeuker, J. E.; Zhong, Z.; Nishikawa, H.; Gabel, J.; Mueller, A.; Pfaff, F.; Sing, M.; Held, K.; Claessen, R.; Koster, G.; Rijnders, G. “Electronic Reconstruction at the Isopolar LaTiO3/LaFeO3

Frijters, Stefan; Gunther, Florian; Harting, Jens “Domain and droplet sizes in emulsions

Interface: An X-Ray Photoemission and Density-Functional Theory Study” PHYSICAL REVIEW

stabilized by colloidal particles” PHYSICAL REVIEW E 90 42307 (2014)

LETTERS 113 237402 (2014)

Das, Siddhartha; Chanda, Sourayon; Eijkel, J. C. T.; Tas, N. R.; Chakraborty, Suman; Mitra,

Liu, Yi; Yuan, Zhe; Wesselink, R. J. H.; Starikov, Anton A.; Kelly, Paul J. “Interface Enhancement of

Sushanta K. “Filling of charged cylindrical capillaries” PHYSICAL REVIEW E 90 43011 (2014)

Gilbert Damping from First Principles” PHYSICAL REVIEW LETTERS 113 207202 (2014)

Kusters, Remy; van der Heijden, Thijs; Kaoui, Badr; Harting, Jens; Storm, Cornelis “Forced

Ganguli, Nirmal; Kelly, Paul J. “Tuning Ferromagnetism at Interfaces between Insulating

transport of deformable containers through narrow constrictions” PHYSICAL REVIEW E 90

Perovskite Oxides” PHYSICAL REVIEW LETTERS 113 127201 (2014)

33006 (2014) Marin, A. G.; Enriquez, O. R.; Brunet, P.; Colinet, P.; Snoeijer, J. H. “Universality of Tip Singularity Singh, Abhinendra; Magnanimo, Vanessa; Saitoh, Kuniyasu; Luding, Stefan “Effect of

Formation in Freezing Water Drops” PHYSICAL REVIEW LETTERS 113 54301 (2014)

cohesion on shear banding in quasistatic granular materials” PHYSICAL REVIEW E 90 22202 (2014)

Thiebaud, Marine; Shen, Zaiyi; Harting, Jens; Misbah, Chaouqi “Prediction of Anomalous Blood Viscosity in Confined Shear Flow” PHYSICAL REVIEW LETTERS 112 238304 (2014)

van der Poel, Erwin P.; Ostilla-Monico, Rodolfo; Verzicco, Roberto; Lohse, Detlef “Effect of velocity boundary conditions on the heat transfer and flow topology in two-dimensional

Windows-Yule, C. R. K.; Weinhart, T.; Parker, D. J.; Thornton, A. R. “Effects of Packing Density on

Rayleigh-Benard convection” PHYSICAL REVIEW E 90 13017 (2014)

the Segregative Behaviors of Granular Systems” PHYSICAL REVIEW LETTERS 112 98001 (2014)

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[SCIENTIFIC PUBLICATIONS] Yang, Yantao; Wang, Jianchun; Shi, Yipeng; Xiao, Zuoli; He, X. T.; Chen, Shiyi “Interactions

Duvigneau, Joost; Kutnyanszky, Edit; Phang, In Yee; Chung, Hong-Jing; Wu, Hairong; Dos

between inertial particles and shocklets in compressible turbulent flow” PHYSICS OF FLUIDS

Ramos, Lionel; Gaedt, Torben; Yusoff, Siti Fairus M.; Hempenius, Mark A.; Manners, Ian;

26 91702 (2014)

Vancso, G. Julius “Raft crystals of poly(isoprene)-block-poly(ferrocenyldimethylsilane) and their surface wetting behavior during melting as observed by AFM and NanoTA” POLYMER

Ito, Takahiro; Lhuissier, Henri; Wildeman, Sander; Lohse, Detlef “Vapor bubble nucleation by

55 2716 - 2724 (2014)

rubbing surfaces: Molecular dynamics simulations” PHYSICS OF FLUIDS 26 32003 (2014) Kutnyanszky, Edit; Hempenius, Mark A.; Vancso, G. Julius “Polymer bottlebrushes with a Grossmann, Siegfried; Lohse, Detlef; Sun, Chao “Velocity profiles in strongly turbulent Taylor-

redox responsive backbone feel the heat: synthesis and characterization of dual responsive

Couette flow” PHYSICS OF FLUIDS 26 25114 (2014)

poly(ferrocenylsilane)s with PNIPAM side chains” POLYMER CHEMISTRY 5 771 - 783 (2014)

Ostilla-Monico, Rodolfo; van der Poel, Erwin P.; Verzicco, Roberto; Grossmann, Siegfried;

Piccolo, G.; Kuindersma, P. I.; Ragnarsson, L-A; Hueting, R. J. E.; Collaert, N.; Schmitz, J.

Lohse, Detlef “Boundary layer dynamics at the transition between the classical and the

“Silicon LEDs in FinFET technology” PROCEEDINGS OF THE 2014 44TH EUROPEAN SOLID-

ultimate regime of Taylor-Couette flow” PHYSICS OF FLUIDS 26 15114 (2014)

STATE DEVICE RESEARCH CONFERENCE (ESSDERC 2014) 274 - 277 (2014)

Lazauskas, Algirdas; Baltrusaitis, Jonas; Grigaliunas, Viktoras; Jucius, Dalius; Guobiene,

Ferrara, A.; Steeneken, P. G.; Boksteen, B. K.; Heringa, A.; Scholten, A. J.; Schmitz, J.; Hueting,

Asta; Prosycevas, Igoris; Narmontas, Pranas “Characterization of Plasma Polymerized Hexa­

R. J. E. “Identifying Failure Mechanisms in LDMOS Transistors by Analytical Stability

methyldisiloxane Films Prepared by Arc Discharge” PLASMA CHEMISTRY AND PLASMA

Analysis” PROCEEDINGS OF THE 2014 44TH EUROPEAN SOLID-STATE DEVICE RESEARCH

PROCESSING 34 271 - 285 (2014)

CONFERENCE (ESSDERC 2014) 321 - 324 (2014)

Loan Le Thi Ngoc; Wiedemair, Justyna; van den Berg, Albert; Carlen, Edwin T. “The

Shpak, Oleksandr; Verweij, Martin; Vos, Hendrik J.; de Jong, Nico; Lohse, Detlef; Versluis,

contribution

background”

Michel “Acoustic droplet vaporization is initiated by superharmonic focusing” PROCEEDINGS

PLASMONICS: METALLIC NANOSTRUCTURES AND THEIR OPTICAL PROPERTIES XII 9163

OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 111 1697

91632S (2014)

- 1702 (2014)

Yang, Yoonsun; Swennenhuis, Joost F.; Rho, Hoon Suk; Le Gac, Severine; Terstappen, Leon W.

Wildeman, Sander; Lhuissier, Henri; Sun, Chao; Lohse, Detlef; Prosperetti, Andrea “Tribo­

M. M. “Parallel Single Cancer Cell Whole Genome Amplification Using Button-Valve Assisted

nucleation of bubbles” PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE

Mixing in Nanoliter Chambers” PLOS ONE 9 e107958 (2014)

UNITED STATES OF AMERICA 111 10089 - 10094 (2014)

Pereira, Andrea M.; Tudor, Cicerone; Pouille, Philippe-Alexandre; Shekhar, Shashank;

Torreno-Pina, Juan A.; Castro, Bruno M.; Manzo, Carlo; Buschow, Sonja I.; Cambi, Alessandra;

Kanger, Johannes S.; Subramaniam, Vinod; Martin-Blanco, Enrique “Plasticity of the MAPK

Garcia-Parajo, Maria F. “Enhanced receptor-clathrin interactions induced by N-glycan-

Signaling Network in Response to Mechanical Stress” PLOS ONE 9 e101963 (2014)

mediated membrane micropatterning” PROCEEDINGS OF THE NATIONAL ACADEMY OF

of

plasmon-enhanced

photoluminescence

to

the

SERS

SCIENCES OF THE UNITED STATES OF AMERICA 111 11037 - 11042 (2014) Gumuscu, Burcu; Erdogan, Zeynep; Guler, Mustafa O.; Tekinay, Turgay “Highly Sensitive Determination of 2,4,6-Trinitrotoluene and Related Byproducts Using a Diol Functionalized

Ansari, Seraj A.; Mohapatra, Prasanta K.; Iqbal, Mudassir; Huskens, Jurriaan; Verboom,

Column for High Performance Liquid Chromatography” PLOS ONE 9 e99230 (2014)

Willem “Sorption of americium(III) and europium(III) from nitric acid solutions by a novel diglycolamide-grafted silica-based resins: Part 2. Sorption isotherms, column and radiolytic

Sridhar, Adithya; de Boer, Hans L.; van den Berg, Albert; Le Gac, Severine “Microstamped

stability studies” RADIOCHIMICA ACTA 102 903 - 910 (2014)

Petri Dishes for Scanning Electrochemical Microscopy Analysis of Arrays of Microtissues” PLOS ONE 9 e93618 (2014)

Chavan, Vivek; Thekkethil, Vasudevan; Pandey, Ashok K.; Iqbal, Mudassir; Huskens, Jurriaan; Meena, Sher Singh; Goswami, Asok; Verboom, Willem “Assembled diglycolamide

Ogieglo, Wojciech; Wormeester, Herbert; Wessling, Matthias; Benes, Nieck E. “Effective

for f-element ions sequestration at high acidity” REACTIVE & FUNCTIONAL POLYMERS 74

medium approximations for penetrant sorption in glassy polymers accounting for excess

52 - 57 (2014)

free volume” POLYMER 55 1737 - 1744 (2014)

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[SCIENTIFIC PUBLICATIONS] Stevens, Richard J. A. M.; Graham, Jason; Meneveau, Charles “A concurrent precursor

Mishra, Kartikeya; Murade, Chandrashekhar; Carreel, Bruno; Roghair, Ivo; Oh, Jung Min;

inflow method for Large Eddy Simulations and applications to finite length wind farms”

Manukyan, Gor; van den Ende, Dirk; Mugele, Frieder “Optofluidic lens with tunable focal length

RENEWABLE ENERGY 68 46 - 50 (2014)

and asphericity” SCIENTIFIC REPORTS 4 6378 (2014)

Daniilidis, Alexandros; Vermaas, David A.; Herber, Rien; Nijmeijer, Kitty “Experimentally

Poccia, Nicola; Campi, Gaetano; Ricci, Alessandro; Caporale, Alessandra S.; Di Cola, Emanuela;

obtainable energy from mixing river water, seawater or brines with reverse electrodialysis”

Hawkins, Thomas A.; Bianconi, Antonio “Changes of statistical structural fluctuations unveils an

RENEWABLE ENERGY 64 123 - 131 (2014)

early compacted degraded stage of PNS myelin” SCIENTIFIC REPORTS 4 5430 (2014)

Leung, V. Y. F.; Pijn, D. R. M.; Schlatter, H.; Torralbo-Campo, L.; La Rooij, A. L.; Mulder, G. B.;

Siretanu, Igor; Ebeling, Daniel; Andersson, Martin P.; Stipp, S. L. Svane; Philipse, Albert; Stuart,

Naber, J.; Soudijn, M. L.; Tauschinsky, A.; Abarbanel, C.; Hadad, B.; Golan, E.; Folman, R.;

Martien Cohen; van den Ende, Dirk; Mugele, Frieder “Direct observation of ionic structure at

Spreeuw, R. J. C. “Magnetic-film atom chip with 10 mu m period lattices of microtraps for

solid-liquid interfaces: a deep look into the Stern Layer” SCIENTIFIC REPORTS 4 4956 (2014)

quantum information science with Rydberg atoms” REVIEW OF SCIENTIFIC INSTRUMENTS 85 53102 (2014)

Yuan, Huiyu; Besselink, Rogier; Liao, Zhaoliang; ten Elshof, Johan E. “The swelling transition of lepidocrocite-type protonated layered titanates into anatase under hydrothermal treatment”

Mohapatra, Prasanta K.; Ansari, Seraj A.; Iqbal, Mudassir; Huskens, Jurriaan; Verboom,

SCIENTIFIC REPORTS 4 4584 (2014)

Willem “First example of diglycolamide-grafted resins: synthesis, characterization, and actinide uptake studies” RSC ADVANCES 4 10412 - 10419 (2014)

Svetovoy, Vitaly B.; Sanders, Remco G. P.; Ma, Kechun; Elwenspoek, Miko C. “New type of microengine using internal combustion of hydrogen and oxygen” SCIENTIFIC REPORTS 4

Wijdeven, M. A.; Nicosia, C.; Borrmann, A.; Huskens, J.; van Delft, F. L. “Biomolecular

4296 (2014)

patterning of glass surfaces via strain-promoted cycloaddition of azides and cyclooctynes” RSC ADVANCES 4 10549 - 10552 (2014)

Hoog, N. A.; Mayer, M. J. J.; Miedema, H.; Olthuis, W.; Leferink, F. B. J.; van den Berg, A. “Modeling and simulations of the amplitude-frequency response of transmission line type resonators filled

Vasantha, Vivek Arjunan; Jana, Satyasankar; Parthiban, Anbanandam; Vancso, Julius

with lossy dielectric fluids” SENSORS AND ACTUATORS A-PHYSICAL 216 147 - 157 (2014)

G. “Halophilic polysulfabetaines - synthesis and study of gelation and thermoresponsive behavior” RSC ADVANCES 4 22596 - 22600 (2014)

van Lith, Joris; Hoekstra, Hugo J. W. M.; Civitci, Fehmi; Stoffer, Remco; Lambeck, Paul V. “A compact optical chip for refractive sensing based on cut-off enhanced modal coupling changes”

Sotthewes, K.; Hellenthal, C.; Kumar, A.; Zandvliet, H. J. W. “Transition voltage spectroscopy of

SENSORS AND ACTUATORS B-CHEMICAL 205 111 - 119 (2014)

scanning tunneling microscopy vacuum junctions” RSC ADVANCES 4 32438 - 32442 (2014) Hoog, N. A.; Mayer, M. J. J.; Miedema, H.; Wagterveld, R. M.; Saakes, M.; Tuinstra, J.; Olthuis, W.; Sengupta, Arijit; Mohapatra, Prasanta K.; Kadam, Ramakant M.; Manna, Debashree; Ghanty,

van den Berg, A. “Stub resonators for online monitoring early stages of corrosion” SENSORS

Tapan K.; Iqbal, Mudassir; Huskens, Jurriaan; Verboom, Willem “Diglycolamide-functionalized

AND ACTUATORS B-CHEMICAL 202 1117 - 1136 (2014)

task specific ionic liquids for nuclear waste remediation: extraction, luminescence, theoretical and EPR investigations” RSC ADVANCES 4 46613 - 46623 (2014)

Agirre, Ion; Arias, Pedro L.; Castricum, Hessel L.; Creatore, Madriana; ten Elshof, Johan E.; Paradis, Goulven G.; Ngamou, Patrick H. T.; van Veen, Henk M.; Vente, Jaap F. “Hybrid

Minh Duc Nguyen; Houwman, Evert; Dekkers, Matthijn; Hung Ngoc Vu; Rijnders, Guus “A Fast

organosilica membranes and processes: Status and outlook” SEPARATION AND PURIFICATION

Room-Temperature Poling Process of Piezoelectric Pb(Zr0.45Ti0.55)O3 Thin Films” SCIENCE OF

TECHNOLOGY 121 2 - 12 (2014)

ADVANCED MATERIALS 6 243 - 251 (2014) Vazquez-Cordova, S. A.; Bernhardi, E. H.; Worhoff, K.; Garcia-Blanco, S. M.; Pollnau, M. “ErbiumKim, Duckjong; Lee, Woon Seob; Shin, Soojeong; Rho, Hoon Suk; Dai, Jing; Yun, Jae Young;

doped spiral amplifiers with 20 dB gain on a silicon chip” SILICON PHOTONICS AND PHOTONIC

Hong, Jong Wook “Quantitative Analysis of Pneumatically Driven Biomimetic Micro Peristalsis”

INTEGRATED CIRCUITS IV 9133 913308 (2014)

SCIENCE OF ADVANCED MATERIALS 6 2428 - 2434 (2014) Lhuissier, Henri; Lohse, Detlef; Zhang, Xuehua “Spatial organization of surface nanobubbles and its implications in their formation process” SOFT MATTER 10 942 - 946 (2014)

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[SCIENTIFIC PUBLICATIONS] Nair, Hrudya; Staat, Hendrik J. J.; Tran, Tuan; van Houselt, Arie; Prosperetti, Andrea; Lohse,

Molenaar, C. G.; Leusink, D. P.; Wang, X. L.; Brinkman, A. “Geometric dependence of Nb-

Detlef; Sun, Chao “The Leidenfrost temperature increase for impacting droplets on carbon-

Bi2Te3-Nb topological Josephson junction transport parameters” SUPERCONDUCTOR

nanofiber surfaces” SOFT MATTER 10 2102 - 2109 (2014)

SCIENCE & TECHNOLOGY 27 104003 (2014)

Stapelbroek, B. B. J.; Jansen, H. P.; Kooij, E. S.; Snoeijer, J. H.; Eddi, A. “Universal spreading of

Snelder, M.; Molenaar, C. G.; Pan, Y.; Wu, D.; Huang, Y. K.; de Visser, A.; Golubov, A. A.; van

water drops on complex surfaces” SOFT MATTER 10 2641 - 2648 (2014)

der Wiel, W. G.; Hilgenkamp, H.; Golden, M. S.; Brinkman, A. “Josephson supercurrent in a topological insulator without a bulk shunt” SUPERCONDUCTOR SCIENCE & TECHNOLOGY

Chen, Qi; Kooij, E. Stefan; Sui, Xiaofeng; Padberg, Clemens J.; Hempenius, Mark A.; Schon,

27 104001 (2014)

Peter M.; Vancso, G. Julius “Collapse from the top: brushes of poly-(N-isopropylacrylamide) in co-nonsolvent mixtures” SOFT MATTER 10 3134 - 3142 (2014)

Karminskaya, T. Yu; Kupriyanov, M. Yu; Prischepa, S. L.; Golubov, A. A. “Conductance spectro­ scopy in ferromagnet-superconductor hybrids” SUPERCONDUCTOR SCIENCE &

van der Veen, Roeland C. A.; Hendrix, Maurice H. W.; Tuan Tran; Sun, Chao; Tsai, Peichun

TECHNOLOGY 27 75008 (2014)

Amy; Lohse, Detlef “How microstructures affect air film dynamics prior to drop impact” SOFT MATTER 10 3703 - 3707 (2014)

Hoek, M.; Coneri, F.; Leusink, D. P.; Eerkes, P. D.; Wang, X. Renshaw; Hilgenkamp, H. “Effect of high oxygen pressure annealing on superconducting Nd1.85Ce0.15CuO4 thin films by pulsed

Kaoui, Badr; Jonk, Ruben J. W.; Harting, Jens “Interplay between microdynamics and

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macrorheology in vesicle suspensions” SOFT MATTER 10 4735 - 4742 (2014)

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temperature ionic liquid for metal ion extraction: studies with simulated high-level wastes” SUPRAMOLECULAR CHEMISTRY 26 612 - 619 (2014)

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Liu, L.; den Otter, W. K.; Briels, W. J. “Coarse grain forces in star polymer melts” SOFT MATTER 10 7874 - 7886 (2014)

Nguyen, C. T. Q.; Nguyen, M. D.; Dekkers, M.; Houwman, E.; Vu, H. N.; Rijnders, G. “Process

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dependence of the piezoelectric response of membrane actuators based on Pb(Zr0.45Ti0.55)O3

kinetics on PrBaCo2O5+” SOLID STATE IONICS 262 668 - 671 (2014) Macedo, R. G.; Verhaagen, B.; Rivas, D. Fernandez; Gardeniers, J. G. E.; van der Sluis, L. W. Wilden, Andreas; Modolo, Giuseppe; Lange, Steve; Sadowski, Fabian; Beele, Bjoern B.;

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C.C. Raiss, M.M.A.E. Claessens, Morphological and Functional Heterogeneity of Lewy

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[ABOUT MESA+]

MESA+ Governance Structure MESA+ Governing Board

Prof. dr. P.M.G Apers, Dean Faculty of Electrical Engineering, Mathematics and Computer Science



Prof.dr.ir. J.W.M. Hilgenkamp - Dean Faculty Science & Technology (ad interim, from February 1, 2014)



Dr. G.J. Jongerden - Project Manager/Group head Solar Cells R&D (CSO) Akzo Nobel Chemicals Research



Ir. J.J.M. Mulderink - Chairman of the Foundation for Development of Sustainable Chemistry



Dr. A.J. Nijman - Director Research Strategy & Business Development Philips NatLab



Prof. dr. J.A. Put - Director Performance Materials DSM Research



Dr. J. Schmitz - Vice President, Manager Process Technology Lab NXP Semiconductors



Prof.dr. G. van der Steenhoven - Dean Faculty Science & Technology (till February 1, 2014)

MESA+ Scientific Advisory Board

Dr. J.G. Bednorz - IBM Zurich Research Laboratory, Switzerland



Prof. H. Fujita - University of Tokyo, Japan



Prof. M. Möller - Rheinisch-Westfälische Technische Hochschule Aachen (RWTH), Germany



Prof. C.N.R. Rao - Jawaharlal Nehru Centre for Advanced Scientific Research, India



Prof. F. Stoddart - Northwestern University, USA



Prof. E. Thomas - Massachusetts Institute of Technology (MIT), USA



Prof. E. Vittoz - Private, Switzerland



Prof. G. Whitesides - Harvard University, USA

MESA+ Management

Prof. dr. ing. D.H.A. Blank - Scientific Director

ir. M. Luizink - Technical Commercial Director (until July 2014) J. Hoedemaekers, MSc - Technical Commercial director (from August 2014)

MESA+ Staff

Marian de Bree - Management assistant MESA+



Leontien Kalverda - Corporate Communication



Roy Kolkman - IP advisor



José Nijhuis - Accountmanager MESA+



Telma Rodriguez da Silva Estevez - Grants Advisor EU Office contactpoint MESA+



Monique Snippers - Projectmanager High Tech Factory



Annerie van Steijn-Heesink - Projectmanager MESA+



Carla Weber - Management assistant MESA+

Contact details

MESA+ Institute for Nanotechnology



University of Twente, P.O. Box 217, 7500 AE Enschede, the Netherlands



+ 31 53 489 2715, [email protected], www.utwente.nl/mesaplus

Colophon Editing: MESA+ Institute for Nanotechnology, Janneke Hoedemaekers, Annerie van Steijn-Heesink I Photography: Eric Brinkhorst, Gijs van Ouwerkerk I Design: WeCre8 Creatieve Communicatie [www.wecreate.nu] I Printed by: SMG Groep, Hasselt, the Netherlands.

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