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Assoc Prof (Adj) Akkipeddi Ramam
Prof Ramam's areas of expertise are, Growth of arsenide/phosphide based materials by MBE/MOCVD,InP based optical MEMS, GaN based optoelectronic devices, His current research works focus on Nanopatterning by e-beam lithography and Printing of functional materials for Electronic applications.
Prof Anand Krishna Asundi
Prof. Asundi's primary research interests are in the field of photomechanics with specific applications in the fields of micro and nano mechanics, biomechanics, chemical sensing, non-destructive testing and smart structures.
Assoc Prof Andrew James Kricker
Prof. Kricker's most significant research interest lies in the mathematical ramifications of current developments in mathematical and theoretical physics. To be precise, he is interested in the ramifications of certain developments in quantum field theory and quantum gravity in the fields of topology, algebra, and combinatorics. Prof. Kricker's particular speciality is in so-called "quantum topological invariants". These are invariants of knots, 3-manifolds, and various other low-dimensional topological structures, that arise from Topological Quantum Field Theories. More generally, he has a considerable general interest in the fields that surround this topic: knot theory, the theory of low-dimensional manifolds, Lie algebras, Hopf algebras, representation theory, homological algebra, algebraic combinatorics, and so on.
Prof Atul N. Parikh
Membrane biophysics biologically inspired materials biosensors synthetic chemical biology
Prof (Adj) Boris Lukiyanchuk
Prof. Lukiyanchuk's significant research interests are related to Laser - matter interactions, Chemical processing with lasers, Nonlinear phenomena, Selforganization, Laser-ablation, Nanoclusters, Photo modification in polymers, Laser Cleaning, Plasmonics, Metamaterials, Nanoscopy, Nanooptics, Fano resonances in plasm
Asst Prof Cesare Soci
We are interested in the fundamental properties of materials related to small dimensionality and large interface area. Understanding these properties is essential to exploit them in emerging technologies, such as renewable energy sources. In particular we focus on two classes of nanostructured materials, namely organic and inorganic semiconductors, and on their interplay, from basic scientific issues all the way to the device level. Some topics of specific interest are: 1. Nanowire synthesis and devices: semiconductor nanowires are synthesized by different approaches, including top-down and bottom-up methods, and lithographic techniques are used to fabricate nanowire arrays and devices. 2. Organic semiconductors: we study the fundamental properties of organic semiconductors and their use in "plastic electronics." In particular we focus on the interplay between charge carrier photogeneration and exciton recombination, which is a determining factor of the performance of organic solar cells, light-emitting diodes and field-effect transistors. 3. Organic-inorganic hybrid systems: we investigate the optoelectronic properties of hybrid organic-inorganic heterostructures specifically targeted to light sensing and photovoltaic applications, combining microscopy, optical and photocurrent spectroscopy, and nanofabrication technologies.
Assoc Prof Chai Gin Boay
Composite Materials & Structures, Buckling and Failure of Structures, Practical Application of Finite Element softwares (ANSYS, ABAQUS, MARC/MENTAT).
Assoc Prof Chan Chi Chiu
His research areas are optical fiber sensing system, fiber Bragg grating device, fiber optics chemical sensors, photonics crystal fiber biosensor, digital signal processing, such as artificial neural network, fuzzy logic, genetic algorithm, wavelet, etc., on smart structures, fiber optics chemical and biomedical sensing areas.
Prof Chang Ngee-Pong
Theoretical High Energy Physics Enriching the Standard Model: Following the suggestion of Friedberg-Lee, we introduce an extended family of sextuplet CP-even and triplet CP-odd Higgs fields that couple to the 3 generations of quarks. The Lagrangian is itself CP-conserving. But as a result of the spontaneous symmetry breaking of the Higgs potential, CP is broken. This extension of the Standard Model leads to observable CP oscillations at the LHC. Work in this direction is in progress. Preliminary results were reported at the 1st IAS- Winter School on Particle Physics, Cosmology, and Implications for Technology, NTU, 9 - 31 January, 2012 ( http://www.ntu.edu.sg/ias/upcomingevents/iassppcit/Pages/LectureNotes.aspx ) Tritium beta decay experiments hint at tachyonic mass for electron neutrinos. (http://www.physik.uni-mainz.de/exakt/neutrino/en_experiment.html ) Is there a consistent field theory for such faster-than-light neutrinos ? The answer is yes ( http://arxiv.org/abs/hep-ph/0105153 Modern Phys Letters A 16, 2129 (2001) ) How does a tachyonic mass affect the endpoint of tritium β-decay ? See http://arxiv.org/abs/hep-ph/0410175 for a complete field-theoretic treatment of the decay spectrum, including the complex energy modes of the tachyon pole.
Asst Prof Cheong Siew Ann
Asst Prof CHEONG Siew Ann's areas of expertise are in computational physics, complex system dynamics, and bioinformatics. He is currently working on the development of self-consistent stochastic boundary conditions for ab initio and molecular dynamics simulations, methods to accelerate Monte Carlo simulations and high-dimensional optimization. He is also interested in developing automatic coarse-graining algorithms to perform data-driven identification of effective degrees of freedom in financial markets, very-large-scale computer simulations. He is also working on applying ideas from the Renormalization Group in statistical physics to the mining of very-large-scale databases.
Asst Prof Chew Lock Yue
Dr Chew research interest is to explore, investigate and uncover the fundamental physical mechanisms and organization principles within complex systems and their dynamics, through the paradigm of statistical and nonlinear physics. His current research focus is on the topic of: quantum-classical correspondence in the entanglement dynamics of coupled systems, the statistical physics of alpha helix to beta-sheet transitions in protein folding, self-organization in dusty plasmas and BEC, and weak signal detection by an array of multiply coupled stochastic resonators.
Asst Prof Chia Ee Min, Elbert
Dr. Chia's areas of expertise are low-temperature condensed matter physics, specifically penetration depth studies of unconventional superconductors and ultrafast dynamics of strongly correlated electron systems. His current research works focus on ultrafast quasiparticle dynamics of high-temperature superconductors, heavy fermions, multiferroics, and nanocomposites.
Asst Prof (Adj) Chiam Sing Yang
My application directed interest is directed at energy related research. I am especially interested to study the origin of open circuit voltages in different type of solar cells where charge separation differs. I am also interested in exploring new materials or the use of nanostructures. This can be used for either photovoltaic applications or even photocatalysis. I am also looking at ways to improve transparent conductor. Currently, this is directed at flexible substrates for printed applications. In another aspect of my interest, I’ll like to understand the interface energy separation between different materials. For example, for oxide-semiconductor, it is subtle but important to consider aspect of extra-atomic relaxation, differential charging and various chemical reactions at the interface before directly utilizing measurements from photoelectron spectroscopy to determine the interface energy alignments. In doing so, we can then critically examine different models in alignment, including charge neutrality model and the interface induced gap states model. I hope to extend the technique to overcome issues of ionization cross section from organic materials to give better accuracy in their HOMO/LUMO alignment.
Asst Prof Chong Yi Dong
My research interests lie in the field of theoretical optics and photonics. Research topics include lasers and optical absorbers, scattering theory, nanoplasmonics, and photonic crystals. Most recently, my work on "coherent perfect absorbers" (performed at Yale) was published in Science and featured in numerous popular science reports including in the New York Times. A sample of current research topics is available on my group webpage.
Prof Christian Leo Kloc
His primary research focus has been on synthesis, crystal growth, characterization and applications of new or non-commercially available materials ranging from insulating oxides, semiconductor, superconductor and organic, molecular crystals to intermetallic crystals. His current research focuses on crystal growth of organic semiconductors and the technology of organic devices. Another area of interest is in development of new functional materials suitable for efficient energy harvesting and conversion.
Asst Prof (Adj) Christophe Couteau
Quantum optics, quantum information, photonics, nanoscience, material and semiconductor physics.
Assoc Prof Christopher Shearwood
Assoc Prof Christopher Shearwood main research focus are in the area of MEMS, BIOMEMS, sensors and actuators although he has also accumulated experience in transdermal drug delivery, spintronics, thin film magnetism, x-ray topography, electron and ion beam lithography, shape memory alloys, and nano-metals. He has published over 40 top quality international journal papers, as well as numerous conference papers, book chapters, and patents.
Assoc Prof Christos Panagopoulos
Driven primarily by innovations in materials science and engineering, his research focuses on condensed matter systems with spontaneous tendencies toward complex electronic pattern formation. The materials investigated in his laboratory include spin and charge memory devices, magneto-electrics and high-temperature superconductors. These are part of a larger class of prime examples of frontier technology for the 21st century, displaying novel behaviours that do not conform to the quantum theory of solids developed over the past 70 years. Panagopoulos develops an international coordinated effort on the science and applications of emergent complex phases in modern materials. Understanding and controlling these spontaneous tendencies will enable the design and development of highly sensitive micro- and nano-scale devices where we tune electronic matter to the widest possible range, starting from an insulator to a high temperature superconductor.
Assoc Prof Claus-Dieter Ohl
My general research interest is Experimental Fluid Dynamics which is focused on cavitation phenomena and gas bubble dynamics. In particular I?m interested and have been studying: * air entrainment and rising bubbles, * laser generated bubbles, * bubble shock-wave interaction, * cavitation nucleation on surfaces and particles, * bubble cell interaction including drug delivery, * bubble dynamics in confined geometries and in microfluidics, * digital holography, and * magnetic-nanoparticle coated bubbles. More information can be found on my homepage: http://www1.spms.ntu.edu.sg/~cdohl/home.html
Asst Prof David Henry Adams
Mathematical and theoretical aspects of quantum field theories; lattice gauge theory; discretization of Atiyah-Singer index theory
Vg Assoc Prof David Paul Maxime Wilkowski
* Cold & Ultracold Physics * Gauge field theory * Electromagnetic-Induced Transparency * Wave Localization & Disordered system * Mesoscopic Physics * Ultrahigh laser spectroscopy
Assoc Prof Du Hejun
His research interests mainly include three areas: 1) numerical and computational methods for engineering applications; 2) MEMS sensors and actuators and micro-fluidics; 3) smart materials and their engineering applications.
Asst Prof Fan Hongjin
Inorganic nanowires, nanotubes and their ordered arrays; Atomic layer deposition for surface engineering and nanofabrication; Semiconductor-metal hybrid nanomaterials and effect of surface plasmons on their optical properties; Energy generation and conversion based on 3-D hierarchal nanostructures
Assoc Prof Fan Hui
Prof. Fan has been conducting research in the area of solid mechanics for over 20 years. His publications touched topics: fracture mechanics, mechanics of composites, micromechanics of defects in the solids, and multi-physics.
Assoc Prof Fan Weijun
His research interests include semiconductor band structure calculations by using effective mass theory, the first-principles method and empirical pseudopotential method (EPM); Compound semiconductor material growth, characterizations and device fabrications; Si photonics; Spintronics.
Prof Huan Cheng Hon, Alfred
Alfred Huan's research interests lie primarily in surface science and spectroscopy. He has published over 180 papers in international refereed journals and 1 book chapter, with a current H-index of 19 and citation rate of 7.92. He has been the PI of several research grants awarded by Ministry of Education and A*STAR, with total exceeding S$4 million. He serves on the editorial board of a new journal (Research Letters in Physics), and is a member of the Programme Committees for the ICMAT and VASSCAA conference series
Assoc Prof Huang Weihong
Dr. Huang has wide research interests ranging from microeconomics, industrial organization, financial economics, public economics to nonlinear economic dynamics. Recently, Dr Huang has devoted much time and effort to reexamine the economic behaviors from the perspective of ancient Chinese philosophy. In recent years, he has devoted his most effort in incorporating ancient philosophical wisdom to the analysis of the economic behaviors.
Assoc Prof Huang Xiaoyang
Microscale fluidics and acoustics, nonlinear acoustics, aerodynamic instabilities, flow-structure interactions.
Assoc Prof Ivan Shelykh
Quantum and nonlinear optics BEC in condensed matter systems Quantum many body theory Mesoscopic transport
Prof Kam Chan Hin
His current research interests are mainly in the area of sol-gel photonics, non-linear optics, quantum transport and spectroscopy of rare-earth doped glasses. He has contributed more than 200 international journal and conference publications in the area of Photonics and High Energy Physics. He holds 6 international patents in surface acoustic wave devices and sol-gel photonics.
Assoc Prof Kantisara Pita
Prof K. Pita's areas of expertise are synthesis and fabrication of novel oxide based films and nanoparticles for photonics applications such as light emitting based devices, waveguide based devices and solar cells. His current research works focus on novel oxide based films/nanoparticles materials system for light emitting based devices, solar cells and waveguide based devices.
Assoc Prof Koh Tieh Yong
Tieh Yong's main research activity in the last few years involves research in numerical weather prediction and regional climate downscaling in the equatorial tropics (by way of the application of science to the betterment of society) and to use computational models (e.g. COAMPS, WRF, NHM) as research tools to investigate tropical weather and climate, moist convection, boundary-layer turbulence and pollutant dispersion. Tieh Yong's research interests cover the following topics: Geophysical Fluid Dynamics, Tropical Meteorology, General Circulation, Mixing and Transport in the stratosphere and troposphere at global and regional scales. Please see the homepage above for up-to-date information.
Asst Prof Lan Shau-Yu
My research interests focus on utilizing quantum optics, atom optics, and laser cooling and trapping techniques for quantum sensing, precision measurement, and quantum metrology. For example, I am going to explore the use of an optical matter wave guide based on a hollow-core photonic crystal fiber. This could lead to demonstration of atom interferometry with optically guided matter waves inside the fiber and use it for mobile gravity gradiometry, testing the charge neutrality of atoms, and eventually measuring Newton’s gravitational constant G. This research could bring research in the field of atomic sensor and precision measurement to the next level of compactness and versatility combined with high accuracy.
Assoc Prof (Adj) Lee Cheow Lei James
Radiation Physics for Radiotherapy, in particular: - Radiation dosimetry techniques for verification of dose and dose calculation algorithms - Physics of Intensity-modulated Radiotherapy and Volumetric Modulated Radiotherapy - Treatment Planning studies - Monte Carlo simulation studies - 4DCT for Radiotherapy
Asst Prof Lee Kijoon
His research interest is over a broad area of interaction of light with human tissue, with the application in medical imaging in mind. Main research field is noninvasive deep tissue probing by diffuse optics, including diffuse optical tomography (DOT) and diffuse correlation spectroscopy (DCS). He is experienced in both instrumentation and numerical image reconstruction, and is actively performing research on building a clinical device for breast cancer screening, brain activity monitoring, and blood perfusion monitoring in lower limb. Collaborating institutions are National Cancer Center in Singapore, Tan Tock Seng Hospital, and A*STAR.
Prof Lee Soo Ying
My current areas of research interest include: Understanding vision; many types of Raman scatering; ultrafast nonlinear spectroscopy; molecular reaction dynamics; multidimensional spectroscopy.
Asst Prof Lew Wen Siang
Dr Lew's areas of expertise are spintronic devices, nanoscale magnetism, and bio magnetic sensors.
Assoc Prof Li Hua
Dr. Li Hua's area of expertise is computational science and engineering. His current research works focus on the multiphysics modelling of soft matters (smart hydrogel in BioMEMS and biological cell in micro scale fields), development of highly efficient numerical computational methodology (meshless & multiscale algorithms), simulation of sustainable energy (building energy efficiency and fuel cell system), and dynamics (high-speed rotating shell and composite materials structure).
Asst Prof Liu Quan
• Biophotonics • Biomedical optical spectroscopy and imaging • Non-invasive medical diagnostics • Biomedical instrumentation • Computer simulation of electromagnetic wave in tissue
Assoc Prof Liu Yong
Prof. Liu's research is focused on smart materials and structures and their applications. Materials related research activities include but not limited to developing shape memory alloys (SMAs), fundamentals of transformation characteristics of SMAs, sensing capability of ferromagnetic shape memory materials, processing-microstructure-property relation in SMAs, fracture mechanism of FSMAs, SMA thin films and melt-spun ribbons, constrained shape recovery and influencing factors, magnetic properties of FSMAs, etc. Application related research activities include morphing wing mechanisms of UAVs, smart-materials-based mechanisms for deployable space structures, smart-materials actuated biologically inspired micro-aerial vehicles (flapping wing system). Other activities include SMA actuated MEMS, nitinol stent - design, fabrication, characterization, smart materials actuated underwater robot, robotic hand actuated with muscle wire.
Asst Prof Loh Zhi Heng
The central theme of our experimental research program is the study of coherent electron and nuclear dynamics in molecules and nanomaterials. Coherent electron motion and the ensuing quantum dynamics set forth by either optical excitation or nonresonant strong-field ionization with few-cycle laser pulses will be probed with attosecond to femtosecond time resolution. This proposed work builds upon my previous work, in which coherent electron motion in Kr+ ions that accompanies the formation of a spin-orbit wave packet is observed (Nature, 2010). The main experimental techniques that are employed include attosecond time-resolved core-level transient absorption and transient photoelectron spectroscopies, in which soft x-ray pulses produced in a tabletop setup by high-order harmonic generation are used as probe. These soft x-ray studies are complimented with optical pump-probe measurements employing few-cycle (~5 fs) laser pulses. The ultimate goal of our studies is to exploit quantum coherences to enhance the performance of nanoelectronics and artificial light harvesting systems.
Mr Lu Bing Sui
1. Statistical physics and elasticity of liquid crystal elastomers 2. Liquid crystals, polymers, and rubber 3. Statistical physics of many-body Coulomb systems
Asst Prof Luan Feng
Photonic integrated circuits for optical signal processing and sensing. Photonic crystal fibre design for applications in sensing, imaging, fibre laser and power delivery. Nonlinear optics
Prof Mahmut Reyhanoglu
Dr. Reyhanoglu's major research interests are in the areas of nonlinear dynamics, controls, and robotics, with particular emphasis on application to mechanical and aerospace systems.
Asst Prof Marcos
His research interests include small scale fluid dynamics, microfluidics, swimming in non-Newtonian fluids, and bio-locomotion.
Prof Maria-Elisabeth Michel-Beyerle
We apply modern tools in ultrafast laser spectroscopy and surface imaging to a broad range of problems in condensed phase structure and dynamics. Most of the problems relate to biopolymers. These have the beauty of touching on basic questions in the field of molecular photophysics, while aiming at insights urgently needed for design and optimization of devices in biotechnology and solar energy conversion. Electrochemical control of topology of immobilized biosystems. This research addresses DNA-, protein-, and hybrid DNA-protein structures which are immo-bilized at macroscopic surfaces or at nanoparticles. The focus is on the dynamics of electronically excited states in tailored architectures reporting on processes as excitation energy transfer, electron transfer, and proton transfer as well as on disorder phenomena, conforma-tional fluctuations, and self-organisation. These object-tives are pursued in a joint effort focussing on one hand on the design and synthesis of functional DNA, protein and hybrid structures and, on the other, on a variety of experimental techniques involving the measurement of excited state lifetimes and the identification of deactivation pathways in the femtosecond to the subnanosecond range. When performed under confocal conditions, fluorescence lifetime profiles yield temporal and spatial information with a resolution of single domains and possibly single molecules. A novel feature of our approach is the control of disorder-order transitions by the fluorescence lifetime profile of single domains in an electrochemical potential. Structure-based dynamics in DNA and proteins. Our interest is in the dynamics of electronically excited states, their intramolecular and intermolecular interactions including charge transfer and conformational relaxation. In this spirit we have recently extended femtosecond time-resolved studies to more complex and most relevant DNA structures as quadruplexes and also to nucleosomes with focus on in situ photorepair of light-induced defects (thymine cyclobutane dimers). The role of conformational flexibility in charge transfer processes, one of the still open questions in the field of charge transport in DNA, is studied using DNA double strands which carry changes in the sugar-phosphate backbone. In the area of proteins, apart from the effect of non-canonical amino acids on the excited state dynamics in GFP, the Green Fluorescent Protein, we study at present how the lifetime of a single excited tryptophan responds to the presence of ATP at the periphery of a specific subunit of the molecular motor enzyme ATPase. Development of optimized molecular/semiconductor hybrid systems for solar cells. Conversion of solar radiation to electrical energy can be performed by excitation of a dye or other light-absorbing material (preferentially quantum dots) followed by a transfer of the electron into a semiconductor and from there into another part of the circuit, thus providing an efficient source of electricity. A principal problem of such devices is the back reaction, in which the electron returns to the electron deficient injector instead of contributing to an electric current. New activities in our group are dedicated to the development and examination of novel electron injecting systems which are expected to show a drastically reduced back reaction, thus enhancing the efficiency of the solar conversion device.
Assoc Prof Mu Yuguang
Research Fields 1. MD simulation method and data analysis method development. 2. DNA dynamics, DNA ?protein, DNA-counterions interaction study. 3. Peptide, protein folding, unfolding study, specially aimed at folding, misfolding mechanism which could lead to amyloid fibril. 4. RNA dynamics and folding study.
Assoc Prof Murukeshan Vadakke Matham
Associate Professor Murukeshan V Matham's research expertise and focus interests falls under the category of (i) Biomedical Optics, Nanoscale optics (Evanescent and Surface Plasmon lithography and nanopatterning)(iii)Applied Optics, (iv) Optical Metrology, and (v) Fiber Optic sensing (IF, PCF, HiBiF and POF). The details of his Research Frontiers and current projects can be found in brief as given below: RESEARCH FRONTIERS & CURRENT FOCUS (i) Nanoscale optics (ii) Biomedical optics (High resolution multimodlaity optical imaging and sensing) (iii) Applied Optics for precision engineering and metrology(measurement), Nondestructive testing (NDT) and machining Major Current on-going projects: (i) Multimodality multidimensional imaging for tissue imaging and cancer diagnosis (ii) Photonic Crystal and crystal fibers for communications and bio-sensing (iii) Novel Interferometric ( EW and SP) lithography for sub-60nm feature fabrications- semicon and bio applications (iv) Applied Optics/ Optical Metrology for engineering applications (v) Precision fabrication of micro lenses and fiber lenses. (vi)Optofluidics Bio-optics (fiber optics instrumentation, bio-imaging and sensing) for medical and forensic applications Major current on-going Bio-optic research Projects/ Research Interests (i)Multimodality multidimensional imaging for tissue imaging and cancer diagnosis [ On-Going] (ii)Speciality fiber optics based( IF, PCF, FBG) High depth and spatially resolved imaging for bio-applications [On-Going] (iii) Opto-digital vision system for imaging and profile mapping of intra cavities of engineering parts [ On-Going] (iv) Novel opto-digital system for early colon cancer diagnosis [On-Going] (v) Phase Resolved optical concepts for bio- imaging applications [Phase-I completed & Phase-II On-Going]. (v) Photonic crystal/ Fiber for communication and sensing applications [On-Going]
Assoc Prof Ng Beng Koon
My research expertises include the physics of impact ionization process in semiconductors, the design and characterization of advanced photodetectors, and the use of Biophotonics imaging techniques for medical diagnosis.
Assoc Prof Ng Yin Kwee
His main area of research is thermal imaging, biomedical engineering; computational turbomachinery aerodynamics; marine sustainable energy problems; computational fluid dynamics & computational heat transfer such as laser modelling, bioheat transfer analysis. He is the: Adjunct National University Hospital Scientist; Editor-in-Chief for the J. of Mechanics in Medicine and Biology; J. Med. Imaging and Health Informatics; and strategy Assoc. Editor-in-Chief for World J. of Clinical Oncology; Assoc. Editor for Int. J. of Rotating Machinery; Computational Fluid Dynamics J. (CFDJ); Int. J. of Breast Cancer, Chinese J. of Medicine, Open Medical Informatics J., Open Numerical Methods J., J. of Healthcare Engg, J. of Scientific Conf. Proceedings, and J. of Bionanoscience; co-chairman for 15th Int. Conf. on Mechanics in Medicine and Biology (2006); co-chair of the working group on thermal imagers under Medical Technology Standards Committee by SPRING, Singapore (handling the international standardisation aspects for thermal imagers for ISO-IEC) etc.
Prof Nikolay Zheludev
Nanophotonics, Metamaterials, Nonlinear Optics
Dr Ong Keng Sian, Vincent
Prof Vincent K.S. Ong's areas of expertise are in the Characterization of Semiconductor Materials and Devices, and in the areas of Semiconductor Physics, and Computer Simulation of Semiconductor Devices and Materials. His current research works focus on the area of Electron Beam Induced Current Metrology and the Single Contact Electron Beam Induced Current Techniques.
Asst Prof Paterek Tomasz
I am interested in foundations and limits of quantum mechanics and in studies on the border between quantum physics and other fields of science such as information theory, computing, mathematics, biology or gravity. In everyday research I try using concepts with clear operational meaning in order to easily translate obtained theoretical results into the language of experiments.
Prof Peter M. A. Sloot
I try to understand how nature processes information. I study this 'natural information processing' in complex systems by computational modeling and simulation as well as through formal methods. My work is applied to a large variety of disciplines with a focus on -but not limited to- Biomedicine. Recent work is on modeling the virology and epidemiology of infectious diseases, notably HIV, through Complex Networks, Cellular Automata and Multi-Agents. Recently in my work I try to build bridges to socio-dynamics. Currently I lead two large EU projects: ViroLab and DynaNets and supervise research from various NIH, NSF and NWO and Royal Academy projects, see my WebPages and my Research Group . All the rest via: http://staff.science.uva.nl/~sloot/
Assoc Prof Phan Anh Tuan
Dr. Phan's research focuses on the use of a combination of physical, chemical and computational methods to investigate and manipulate properties of biomolecules. The research goals include: (1) Structures, dynamics, interactions and functions of DNA, RNA and proteins. (2) Noncanonical structures of DNA and RNA as molecular targets against diseases. (3) Structural design and engineering of nucleic acids and proteins. (4) Application and development of methods, including Nuclear Magnetic Resonance (NMR) and other spectroscopic techniques, as well as single-molecule manipulations, for the study of biomolecular structures and dynamics.
Prof (Adj) Phua Kok Khoo
High Energy Physics
Assoc Prof (Adj) Phua Poh Boon
1. Ultrafast Femtosecond Lasers: The Gears for Future Optical Clocks All clocks require two components: (1) a regular periodic event such as the swing of the pendulum and (2) a way of recording the events, such as the step by step movement of gears attached to the minutes hands of a clock. In an optical clock, the oscillation of an ultracold-atom is used as the pendulum while the pulses of the femtosecond lasers is used as the ?gears and hands? to count the oscillations. Such an optical clock has the potential of >1000 more accurate than the current Cesium clock used by the International Time Standard. The accuracy is so good that the optical clock might gain or lose a second in 4 billion years. In this project, we explore the use of femto-second laser to generate a broadband stable frequency comb. This stable comb will play a critical role in the next generation of atomics clocks based on optical frequencies. Due to the few orders of magnitude higher frequency involved in optical transition in optical clock, as compared to the microwave transition used in the Cesium clock, the precision of optical clock can be several orders more accurate than the Cesium clock. However, these high optical frequencies make it difficult to count cycles as required for comparison to the current Cesium microwave standard. A stable optical frequency comb from a femto-second laser can effectively acts as an optical-to-microwave conversion tool to perform the clockwork for these optical atomic clocks. It is currently a hot research topic pursued by many research groups throughout the world, such as MIT, NIST and JILA. 2. Radially Polarized Lasers: Breaking the limit of diffraction Focusing an incoming light into a smaller spot is always one of the most interesting topics for optical engineers and scientists. This is highly motivated by the large number of optical instruments and devices that makes use of a sharply focused light beam. A tighter focus means better resolution for applications such as lithography, laser machining and confocal microscopy, and higher storage density for optical data storage applications. It has been shown experimentally that a radially polarized laser beam, under suitable conditions, can be focussed tighter than the diffraction limit. The project explores a novel method to generate a high-power radially polarized laser beam. 3. Tunable Solid State Lasers: Near-infrared pumped solid state lasers such as Cr:YAG and Cr:Forsterite are of interest because they enable the implementation of broadly tunable continuous-wave sources or the generation of short temporal optical pulses in the 1 micron to 1.6 micron spectral range. This emission spectrum is useful as it covers the telecommunication range. The project designs and builds a high power tunable single longitudinal mode Cr:YAG laser. 4. Diode Pumped Solid State Laser: Diode pumping of laser offers better efficiency and beam quality than the flashlamp pumped configurations. We have interests in exploring novel configurations of diode pumping and the diode pumping of novel solid-state active media. Our previous works on diode pumped solid state laser include Nd:YAG, Nd:YVO4, Nd:YALO, Tm:YAG, Yb:YAG and several Yb-doped fiber lasers. 5. Nonlinear conversion of laser wavelength: Optical Parametric Oscillator is a convenient method to generate wavelengths that are not accessible by the solid state lasers. We have interests and have spent substantial research effort in the development of high power mid-IR Optical Parametric Oscillator based on nonlinear optical crystals such as ZnGeP2, KTP, KTA, AgGaS2, and AgGaSe2. 6. Passive/Active locking of lasers: Passive or active coherent locking of lasers promises large laser power scalability. We are currently exploring a novel scheme of coherent locking of several high power Nd lasers.
Asst Prof Pinaki Sengupta
My research interests lie in exploring the physics of strongly correlated many body systems combining analytical and computational approaches, focusing on novel quantum phases and quantum phase transitions that arise from the interplay between competing interactions, lattice geometries and external potentials like applied magnetic field. The search for such exotic phases is driven by fundamental and technological motivations. The technological interest results from the possibility of novel functionalities – such as colossal magnetoresistance and high temperature superconductivity – associated with these new states of matter. The theoretical motivation lies in understanding the nature of fundamental interactions in matter. Working closely with several experimental groups, I use analytical methods supplemented by large scale computer simulations to develop theoretical frameworks (based on appropriate microscopic models of the relevant materials) to explain the many unique experimental observations and provide guidelines for future experiments in different strongly correlated systems including quantum magnets and ultracold atoms trapped in optical lattices. Some representative problems that I have worked on in the recent past are: 1. Supersolid: The supersolid is a novel phase of matter that has simultaneous solid and superfluid character. Although first postulated more than 50 years ago, this phase has never been observed in nature despite intense experimental efforts. I showed for the first time the conditions necessary for realizing such a phase in trapped ultracold atoms in optical lattices. Subsequently, I extended the idea of supersolid phase to quantum magnets and proposed the spin supersolid phase, an idea that has gained widespread recognition in the Condensed Matter Physics community. 2. Quantum magnetism at high magnetic fields: The rapid advance in material synthesis has produced a wide variety of spin compounds with different moments, interactions and geometries. The interplay between competing interactions, coupled with strong magnetic fields results in several novel quantum phases. I work with several experimental groups at the National High Magnetic Field Laboratory (USA) as well as at Oxford and Cambridge Universities (UK) to understand the unique experimental observations in many such compounds including formation of magnetic crystals and Bose Einstein Condensation of magnons. 3. Ultracold atoms in optical lattices: A rapidly emerging field of research lies at the interface of Atomic and Condensed Matter Physics. Magneto-optic trapping and evaporative cooling of atoms has opened a new frontier in the study of strongly correlated systems. I have investigated the novel superfluid to insulator transition in these systems, the interplay between interacting Bosons and Fermions, and the formation of quantum glassy phases in the presence of disorder. 4. Control of quantum systems: I have developed a scheme to designing soft scalable pulses for the coherent control of interacting quantum systems (qubits). Such pulses have important applications in the fields of solid state Nuclear magnetic Resonance, quantum information processing (including quantum computation) and optical (laser) probes for biomedical applications. 5. Theoretical biology: Cholesterol plays an important role in the stability of lipid membranes. Experiment shows that at certain concentrations of cholesterol, the membrane acquires extra stability. Using a simple model, I explained the origin of this enhanced stability.
Assoc Prof Poenar Daniel Puiu
Sensors & actuators; MEMS; Si processing; (Bio)chemical sensors; bio-photonics; colour discriminators (e.g. using triple junction structures); miniaturization of bio-analitical methods (e.g. spectrometry, electrophoresis, chromatography) for (Bio)chemical applications, as well as optical detection for these separation methods; bio-photonics & opto-fluidics
Asst Prof Qian Kemao
Dr Qian's areas of expertise are optical metrology, image processing and computer animation.
Assoc Prof Rainer Helmut Dumke
The investigation and utilization of wave properties of atomic matter is of great interest in fundamental as well as in applied physics. Due to the recent progress in the control of ultra cold atomic matter, there is now a major effort to develop compact and fully integrated Atom-Chip devices. These systems will be suitable for a broad spectrum of applications ranging from Bose-Einstein condensation, atom interferometry, quantum information processing to high precision measurements.
Asst Prof Ranjan Singh
Dr. Singh’s research interests lie at the intersection of electromagnetics, materials, photonics and micro-nanotechnology, with special focus on studying light-matter interaction at the micro-nanoscale. Broadly his research interests are in the areas of nanophotonics, semiconductors, metals, superconductors, plasmonics, metamaterials and nanofabrication. He has been working on design, simulations and fabrication of novel electromagnetic devices including metamaterials, plasmonic resonators and complex oxide transition materials, while simultaneously exploring their applications in information, sensing and energy. Dr. Singh’s research interests are focused on the development of terahertz, infrared, and optical metamaterial based active and passive plasmonic devices. Metamaterials have been found to possess exotic properties and effects that are beyond the realms of materials that exist in nature. His contributions in the field so far has been in the terahertz region where he demonstrated classical active and passive analogues of electromagnetically induced transparency through near field coupled metamaterial resonators, sensing with metamaterials, chiral metamaterials, ultra-high quality factor Fano resonances, and ultrafast superconductor metamaterials. Dr. Singh’s recent research focuses on addressing the issue of losses in subwavelength plasmonic metamaterials and investigates new dynamic materials that could be integrated with metamaterial resonators to achieve the active control of the photonic devices with exotic properties.
Assoc Prof Rusli
A/Prof Rusli's areas of expertise are on the growth, characterization and application of amorphous thin films which include a-C:H, a-Si:H, a-SiC:H, a-SiN:H etc. He has also worked extensively on the design, fabrication and characterization of high frequency, high power and high temperature SiC power devices. His current research works focus on silicon nanowires and their applications.
Asst Prof Samir Hemant Mushrif
Continuously depleting petroleum resources, energy shortage due to ever increasing demands, and environmental concerns are driving the research towards finding novel, low cost, functional materials, catalysts and processes, capable of being commercialized for sustainable energy in the future. Hydrogen production and storage, fuel cells, biomass conversion to fuels and chemicals are some of the high potential areas that are currently being explored. Microscopic understanding of the governing physico–chemical interactions in materials and processes is crucial in developing these technologies. Gleaning fundamental insights into the mechanistic details of a process or into aspects that determine how a material is formed and it functions can help optimize the process operating conditions and material properties. The general focus of the research in the group is to characterize (i) the synthesis and behavior of catalytic and energy storage materials, particularly carbon based and active metal doped materials, and (ii) the chemistry of lignocellulosic biomass conversion, in the presence of these materials, using a multiscale modeling and simulation approach. The hierarchical multiscale approach, developed on the foundation of first principles/quantum mechanical laws and in synergy with experimental findings are implemented for materials and process design. Advanced multiscale molecular modeling methods like density functional theory, first–principles molecular dynamics, metadynamics and reactive force–fields are gaining increasing attention from researchers in chemistry, catalysis and materials community for the advancement of knowledge in these fields. Given the important role that chemical engineers play in developing novel materials, catalysts and processes, a paradigm shift in modeling and simulation in chemical engineering is now occurring and a strong workforce skilled in employing these molecular modeling techniques in chemical engineering research needs to be developed. Samir strongly believes that the students and post-docs working in his group will be trained to spearhead this emerging area in chemical engineering. Additionally, they will also gain international exposure through collaborations with experimental and theoretical researchers abroad. If you want to know more about the research in the group, or if you are interested in joining the group, please visit our website (http://www.ntu.edu.sg/home/shmushrif/). We are currently looking for motivated PhD and post-doc candidates with background in chemical engineering/chemistry/materials. Post-doc applicants are expected to have prior experience in molecular modeling and quantum mechanical calculations.
Prof Shen Zexiang
Prof Shen's areas of expertise are Raman spectroscopy and microscopy, Nano Science and Nano Technology, near-field optics, spintronics and strain characterzation of Si devices. His current research works focus on near-field Raman microscopy, Plasmonics, nano materials and devices, graphene and nanosphere lithography.
Assoc Prof Shu Jian Jun
Associate Professor Jian-Jun SHU's areas of expertise are Applied Mathematics, Thermo-Fluid Mechanics and Biophysics. His current research works focus on DNA-based computer, Mathematical Strategame Theory and Nano/Micro Fluids. My published work has inspired articles, interviews, editorials worldwide. See some selected links below: The next computer: Your genes http://www.physorg.com/news/2011-05-genes.html Efficient DNA-based computing could replace silicon http://www.popsci.com/science/article/2011-05/faster-more-efficient-dna-based-computing-could-replace-silicon Is DNA computing going to terminate Internet banking? http://arstechnica.com/science/news/2011/05/is-dna-computing-going-to-terminate-internet-banking.ars Computing with DNA http://kemo-d7.livejournal.com/1190416.html DNA计算机： 计算的未来 http://sztqb.sznews.com/html/2011-05/30/content_1593552.htm (in Chinese-中文) DNA是计算的未来 http://www.mittrchinese.com/single.php?p=61864 (in Chinese-中文) 科学家拟造DNA环保电脑 http://newspaper.jfdaily.com/xwcb/html/2011-08/31/content_646298.htm (in Chinese-中文) Computadoras del futuro estarán basadas en ADN http://www.tecnopc.org/noticias/computadoras-del-futuro-estaran-basadas-en-adn/ (in Spanish-Español) Futuros computadores pueden ser a base de ADN http://buscandoladolaverdad.blogspot.com/2011/05/futuros-computadores-pueden-ser-base-en.html (in Spanish-Español) La siguiente computadora - Tus genes http://www.neotroid.com/index.php/tecnologia/la-siguiente-computadora-tus-genes.html (in Spanish-Español) Computadoras con base en ADN http://www.zonafranca.mx/computadoras-con-base-en-adn/ (in Galician-Galego) Calculatoarele viitorului ar putea fi pe bază de ADN http://totb.ro/?p=12767 (in Romanian-România) ДНК — Будущее вычислительной области http://compblog.ilc.edu.ru/blog/science/2108.html (in Russian-Русский язык) ДНК-Компьютер идет на смену своему кремниевому собрату? http://globalscience.ru/article/read/19396/ (in Russian-Русский язык) Der nächste computer- Unsere gene! http://www.denkmaschinen.ch/2011/05/17/der-nachste-computer-unsere-gene/ (in German-Deutsch)
Prof Shum Ping
Optical Communication Fiber Technology Bluetooth Interactive and digital media
Assoc Prof Sinai Robins
Assoc Prof Robins' research interests include the following fields: Discrete geometry, combinatorial geometry, combinatorial number theory, polytopes and their discrete volumes, and applications of Fourier analysis to polyhedral questions. His current research focuses on computing various different forms of discrete volumes for polytopes, with some applications to number theory.
Assoc Prof Su Haibin
Dr. Su is an expert in computational materials science. His current research programs focus on the development and application of theoretical and computational materials science; Quantum-mechanical, classical simulations and modeling of the electronic, structural, energetic and dynamical properties of functional materials; Emergent collective properties of condensed matter systems, in particular, at nanometer scales.
Asst Prof Sum Tze Chien
My research interests are on the development and application of time-resolved and time-integrated optical spectroscopy techniques to study a broad range of emergent nanoscale and light harvesting systems. Specifically, I focus on investigating light matter interactions; energy and charge transfer mechanisms; and probing carrier and quasi-particle dynamics in these systems. Broadly, I can categorize my group’s efforts in three main areas: (a) nanomaterials nanophotonics; (b) mixed dimension heterostructures; and (c) organic photovoltaics (OPV) and plasmonic OPV. 1. Nanomaterials Nanophotonics One of the longest on-going project is on investigating the carrier and quasi-particle dynamics in Semiconducting Nanostructures Nanophotonics. We have worked on a range of systems – ZnO nanowires, CdS nanowires and nanobelts, ZnSe nanowires, ZnTe nanowires and nanobelts etc. New insights were gained in these studies – for example, (1) in one study involving ZnO nanowires, we established that the fast trapping of carriers to the green-emission related centers is through an ultrafast excitonic Auger recombination mechanism; (2) in another project on Cu-doped ZnO, we verified the charge transfer times from the ZnO host to the Cu subsystem occurs within 39 ps to form an “intermediately bound exciton” that is reponsible for the Green Emission in Cu-doped ZnO; (3) A depiction of semiconductor nanowires under lasing action with single photon excitation (SPE) vs two photon excitation (TPE). The commonly accepted paradigm that the higher pump intensities needed for TPE would correspond to higher exciton density threshold (nth) for two-photon pumped lasing is re-examined by Tze-Chien Sum and co-workers using femtosecond time-resolved spectroscopy. Our results show that a much lower nth is needed to achieve lasing in single ZnSe nanowires with TPE compared to SPE. This finding has significant implications for the photo-stability and durability of nanowire lasing. (4) recently, in a project involving CdS nanowires, we developed a new method for tailoring the nanowire lasing modes utilizing the intrinsic self absorption via the Urbach tail states etc. This work is published in Nanoletters. 2. Mixed Dimension Heterostructures In this project, we focus on controlling the light harvesting and light emission properties of novel CdSe dot/CdS nanorod heterostructures (a system of mixed dimensionality). This is achieved through a good understanding the optical properties and charge transfer dynamics in these nanoheterostructures. Utilizing the CdS shell as an antenna for light harvesting and the quantum confinement afforded by the size of the dot, our group has been able to achieve ultralow threshold lasing over a range of emission wavelengths. This ultralow threshold is achieved through the large absorption cross-sections and suppressed Auger recombination rates in these nano-heterostructures. This work is published in ACSNano. 3. Organic Photovoltaics (OPV) and Plasmonic OPV In this work, we seek to understand energy transfer mechanisms in hybrid organic photovoltaic devices, in particular that of the exciton and polaron dynamics resulting from interchain effects under device conditions (field-induced changes in the optical behaviour). Systems include hybrid Au nanowire/P3HT-PCBM photovoltaic devices and fiber-P3HT-PCBM systems. The recombination pathways will be investigated using both time-resolved photoluminescence and transient absorption spectroscopy. The knowledge gained would serve to guide the design of such organic materials inimproving the PCE through chemical and structural modifications. One recent highlight is the acceptance of our paper on investigating the loss mechanisms in Ag nanoparticle blended OPV cells in Nature Communications.
Assoc Prof Sun Changqing
Low-Dimensional Physics and Chemistry Coordination bond and band controling Defects, surfaces and nanostructures Impurities, interfaces and embedded nanostructures Mesoscopic thermodynamics Nonbonding electronics including H2O boond rexation dynamics
Assoc Prof Sun Handong
Prof Sun's areas of expertise are Optics & Materials physics. His research theme exists at the interface between optical physics and material science, i.e. light-matter interaction. His current research works focus on Optical spectroscopic characterization, Optoelectronic Devices, Plasmonics Optics and Applications of Photonics
Assoc Prof Tan Cher Ming
Reliability physics; Reliability statistics; maintainability; failure analysis; quality engineering; wafer bonding; power electronics, nano-technology, energy harvesting; solid state lighting
Assoc Prof Tan Eng Leong
Computational electromagnetics/optics/acoustics - FDTD, ADI/LOD/SS, fundamental implicit schemes; RF/Microwave IC; SAW/BAW; Photonic crystals, phononic crystals
Assoc Prof Tan Howe Siang
Ultrafast nonlinear vibrational spectroscopy of water molecules in nanoscopically confined environment, especially in systems of biological and chemical interest Development of multi-dimensional optical spectroscopy Ultrafast optical pulse shaping and its applications in spectroscopy
Assoc Prof Tang Dingyuan
Laser physics and engineering, laser technology, nonlinear optics, nonlinear fiber optics, ultrafast optics, nonlinear dynamics of optical systsms, nano optics, optical materials
Prof Tay Beng Kang
B K Tay's research in the plasma processing of materials spans over 12 years and has resulted in over 280 publications. Prof Tay's computed h-index is 27 with SCI citations of 1900 (excluding self). He performed the most comprehensive investigation of the effect of ion energy on the properties of tetrahedral amorphous carbon, of which one paper has been cited 100 times since 1996. Prof Tay and co-workers successfully completed detailed studies into the science and engineering of plasma processes in filtered cathodic vacuum arc technology which overcame serious shortcomings in this technique including problems in controlling the film deposition rate and film uniformity. This resulted in 9 patents based on filtered cathodic vacuum arc technology. He jointly-invented an industrial viable film deposition system where it is currently being used by storage media industries to deposit hard coatings for the production of hard disk drives. This work led him and his co-workers to win the coveted ASEAN Outstanding Engineering Award and the highly prestigious National Technology Award (Singapore) in 1997 and 2000 respectively for outstanding and pioneering R&D contributions on a new filtered cathodic vacuum arc technology. Prof Tay has performed pioneering research in plasma ion immersion implantation and deposition which resulted in the development of novel nanostructured materials, metal nanocomposites and nanoclusters. Recently his team won the 2007 IES Prestigious Engineering Achievement Awards for their work in Nano-engineered Carbon Hybrid Systems. His research work is now focused on the applications of the FCVA technology, which includes diamond-like carbon, metal oxides and embedded nanocluster films and extending into various technological areas such as thin film coatings, field-emission displays to MEMS, nanoelectronics and biotechnology. Currently he is supervising 6 PhD students. Selected Papers 1. D.W. M. Lau, D. G. McCulloch, M. B. Taylor, J. G. Partridge, D. R. McKenzie and N. A. Marks, E.H. T. Teo and B. K. Tay, Abrupt Stress Induced Transformation in Amorphous Carbon Films with a Highly Conductive Transition Phase, Phys Rev Lett, 100, 176101 (2008). 2. Edwin. H. T. Teo, Wendy. K. P. Yung, D. H. Chua & B. K. Tay, A Carbon Nanomattress: A New Nanosystem with Intrinsic, Tunable, Damping Properties, Adv. Mater, Vol. 19, No. 19, pp. 2941-2945 (2007). 3. Yang Y, Sun XW, Tay BK, et al. Twinned Zn2TiO4 spinel nanowires using ZnO nanowires as a template, Adv. Vol. 19 (14): 1839 (2007) 4. Tay BK, Zhao ZW, Chua DHC, Review of metal oxide films deposited by filtered cathodic vacuum arc techniques, Materials Science & Engineering R-Reports, 52 (1-3): 1-48 (2006) 5. J. Y. Sze, B. K. Tay, C. I. Pakes, , D. I. Jamieson and S. Prawer, Formation of Ni nanoparticles in an ion-modified polymer, J. Appl. Phys., 98, 066101 (2005) 6. D. G. McCulloch, J. L. Peng, D. R. McKenzie, S. P. Lau, B. K. Tay and D. Sheeja,Mechanisms for the behaviour of carbon films during annealing, Physical Review B, 70, 8 (2004) 7. T. L. Schiller, D. Sheeja, D. R. McKenzie, D. G. McCulloch, S. Burn, D. S. P. Lau and B. K. Tay, Plasma immersion ion implantation of poly(tetrafluoroethylene), Surface and Coatings Technology 177 -178, 483-488 (2004) 8. Shi X, Tay BK, Tan HS, et al. Transport of vacuum arc plasma through an off-plane double bend filtering duct, Thin Solid Films, 345 (1): 1-6 (1999) 9. Tay BK, Shi X, Tan HS, et al. Raman studies of tetrahedral amorphous carbon films deposited by filtered cathodic vacuum arc, SCT 105 (1-2): 155-158 (1998) 10. Xu S, Tay BK, Tan HS, et al. Properties of carbon ion deposited tetrahedral amorphous carbon films as a function of ion energy, Journal of Applied Physics, 79 (9): 7234-7240, (1996)
Asst Prof Teo Hang Tong Edwin
1.Nano-composites and hybrid materials 2.Carbon-on-carbon anisotropic hybrids 3.Re-ordering of chaotic materials 4.Stacked 2D materials 5.Thermal Interface Materials 6.Thermal management through both top-down and bottom-out approach
Prof Timothy John White
Tim White has thirty years of experience in the design and demonstration of advanced materials for environmental, superconducting, ionic conductivity and hydrogen storage applications. His particular interests lie in tailoring ceramics at the atomic scale to develop or enhance particular properties. These studies have been supported and facilitated through the use of advanced characterization methods, including atomic resolution electron microscopy, crystal refinement using X-ray and neutron diffraction, and synchrotron-based surface analysis for the investigation of chemical states and molecular environments. He is author or co-author of over 200 publications, 4 conference proceedings, 3 patents and confidential reports to industry. In 2006, he introduced a suite of teaching modules for materials scientists called On-line Micro- and Nano-characterisation Instruction (OMNI). These courses were extended by the Australian Learning and Teaching Council to create MyScope, a national curriculum in microscopy and imaging. For three years (2007-2009), he ran the first totally on-line course at NTU called Symmetry and Crystals. Together with a team from Centre for Excellence in Learning and Teaching (CELT), he is delivering the Coursera MOOC Beauty, Form and Function: An Exploration of Symmetry.
Asst Prof Tran Anh Tuan
* Drop-surface interactions * Thermal management using surface modification * Boiling at microscales * Microfluidics
Assoc Prof Vladimir Vladimirovich Kulish
Prof. Kulish's main research interest is in the area of mathematical modeling of energy-informational transport processes and transport phenomena in biological systems.
Asst Prof Wang Lan
Asst Prof Wang Qijie
My current research interests are to explore theoretically and experimentally nano-structured semiconductor and fiber-based materials, and nanophotonic devices (nanoplasmonics, photonic crystals and metamaterials) with an emphasis on all aspects of the problem: from design, fabrication, characterization, to integration at system level. In particular, I am going to investigate the fundamental properties (optical and electrical) of semiconductor (quantum cascade lasers) and high power fiber lasers, and nanophotonic devices (such as graphene optoelectronic devices) in the infrared frequency regimes (inclulding near-IR (~1.5um), mid-IR (~3-30 um) and Terahertz (~60-300 um)) to improve their performance. Exploration of their broad potential applications is also one of the key focuses. We are always looking for strongly motivated both postdoc and Ph.D researchers dedicated to the cutting edge research in semiconductor and fiber lasers, nanotechnology, plasmonics and metamaterials, and nano-optics/photonics. Interested candidates please send your CV to firstname.lastname@example.org. Shortlisted candidates will be contacted. Currently we have several postdoc positions available on the development of high performance fiber lasers and nanophotonics. Group Website: http://www.ntu.edu.sg/home/taojin/Home.html
Asst Prof Wong Chee How
Asst/Prof. Wong Chee How's research interests include molecular dynamics simulation; modeling of nano-materials; nano-mechanics.
Asst Prof Xiong Qihua
Dr. Qihua Xiong?s research is driven by the paradigm of ?bottom-up? nanoscience and nanotechnology. His research covers rational synthesis of functional semiconductor nanomaterials, systematic investigations on their physical properties at quantum size regime and practical applications in nanoelectronics, nanophotonics and nanobiotechnology. His expertise includes Raman scattering spectroscopy, optical absorption spectroscopy, electron microscopy and spectroscopy, scanning probe microscopy, electrical transport, photoconductivity and nanopore biosensing. His group at NTU recently focuses on the following subjects: ? Develop novel approaches to synthesize and tune 1D nanomaterials and heterostructures ? Investigate their fundamental properties as an outcome of confined geometry and anisotropy ? Explore the applications of nanomaterials in nanoelectronics, nanophotonics, energy harvesting ? Build nanoelectronic-bio interfaces, e.g., nanopore field effect transistor for biosensing
Assoc Prof Yap Fook Fah
MAJOR RESEARCH INTERESTS 1. Mechanics of micro-systems, in particular the dynamic analysis of multi-component systems for high capacity, high speed data storage. Currently manager of Centre for Mechanics of Micro-Systems. 2. Virtual prototyping and simulation of complex mechanical systems 3. Dynamics of damped structures and vibration control using magneto-rheological fluid damping technology.
Asst Prof Yu Ting
My research focuses on synthesis of nanostructures, assembly and manipulation of 1D nanostructure, and development of nanodevices: 1. Graphene: preparation, optical characterization, chemical/biological sensor, electrical devices 2. Substrate-friendly synthesizes of metal oxide nanostructures with controlled morphologies and patterns. 3. Wet-chemical method for fabrication of metal hydroxides and metal oxides nanostructures. 4. Field induced electron emission of individual nanowires or nanowire arrays 5. Electronic transport and mechanical properties of individual nanostructures 6. Nanowire FETs for nanoelectronics, nano-chemical sensors and nano-biological sensors
Asst Prof Zhang Baile
Dr. Baile ZHANG’s current research interests include electromagnetic wave theory and applications, metamaterials, optical microscopy, and photonics. His research theme focuses on the analysis and control of electromagnetic waves, from radio to light.
Prof Zhang Dao Hua
Semiconductor materials, devices and physics Quantum well, wire and dot structures and devices New nano-scaled materials and devices for low and high temperature infrared photodetection Metamaterials.
Prof Zhang Qing
Prof Qing Zhang's research interests cover the physical properties and electronic and optoelectronic applications of carbon nanotubes, diamond-like carbon films, CVD diamond, graphene and several other nanostructures.
Assoc Prof Zhao Yang
Miniaturization of electronic and mechanical devices over the past century has brought immeasurable impact onto human lives. Commercial microelectromechanical systems have reached micron scales, and bona fide molecular apparatuses began to emerge setting the stage for upcoming integrated nanoelectromechanics. Dr. Zhao and coworkers systematically investigate carbon-nanotube-based oscillators, bearings and rotators via molecular dynamics simulation in order to establish their optimal operating conditions and to facilitate function-oriented designs. In addition, particular attention is paid to utilization of nanomachinery devices as nanolabs to study energy exchanges among various degrees of freedom, ergodicity on energy surfaces, and equipartition as systems relax, and to test fundamental hypotheses of thermodynamics and statistical mechanics. The advent of ultrafast femtosecond laser spectroscopy brings about intense research interest in relaxation dynamics of photo-excited states in liquids and solids. Newly-arrived technological capabilities to control femtosecond pulse durations and down-to-one-hertz bandwidth resolutions provide novel probes on vibrational dynamics and excitation relaxation. Dr. Zhao and coworkers formulate time-dependent polaronic wave functions that facilitate microscopic modelling of photo-generated excitation relaxation and realistic computation of various third-order optical response functions, and help to achieve a satisfactory comparison between theory and experiment. Carbon nanotubes are attractive candidates for a variety of applications thanks to their remarkable physical, chemical, and mechanical properties. Optical absorption and fluorescence spectroscopy measurements have become an important tool for structure-based characterization and DNA-assisted manipulation of carbon nanotubes. Dr. Zhao and coworkers establish visual, intuitive connections between optical absorption line shapes and their underlying nanotube structures, which are scrutinized by more sophisticated semi-empirical and DFT calculations.
Asst Prof Zheng Yuanjin
• GHz RFIC and SoC design, SAW, MEMS, Acoustics • Bio-IC System and Circuits, Biomedical Imaging • Radar and UWB Communication System and Circuits • Adaptive Signal and Image Processing Algorithm and ASIC
Prof Zhong Wende
Dr Zhong has broad research interests. His current research works include: 1. Optical fiber communication systems and networks 2. Free space optical communications 3. Optical access networks 4. Data centre networks 5. Smart grid
Assoc Prof Zhou Xing
Prof Zhou Xing's areas of expertise are semiconductor device physics, modeling, simulation, technology CAD, mixed-signal CAD, Monte Carlo, ultrafast phenomena. His current research works focus on nanoscale compact model development for bulk/SOI/multigate/nanowire CMOS.
Asst Prof Zhou Yufeng
Image-guided ultrasound therapy; Interaction of ultrasound burst with microbubble; Acoustic field characterization; High-intensity focused ultrasound for cancer/tumor ablation; Histotripsy technology (inducing soft tissue erosion by HIFU pulses); Ultrasound-mediated drug delivery, gene transfection, and immune response; Improving shock wave lithotripsy technology in stone fragmentation and vascular injury; Sonothrombolysis technology (using diagnostic ultrasound pulses, microbubbles, and thrombolysis drugs in enhancing dissolution of blood clot for stroke patients); Vascular occlusion using mechanical HIFU pulses; Ultrasound imaging; Ultrasound application in nondestructive evaluation/testing (NDE/NDT).
Prof Zhu Weiguang
ferroelectrics, multifunctional ultrathin films/superlattice by L-MBE, high-k dielectric thin films for CMOS, nanoelectronics & oxide-electronics, flexoelectricity, spintronics, sensors, electronic materials and their applications, thin film sensors, piezoelectric actuator, functional composite, nano-fabrication and characterization, pyroelectric IR sensor and arrays, MEMS micro-sensors and micro-actuators, ferroelectric field emission display, tunable dielectrics for microwave antenna and devices, diamond thin films, high Tc superconductor ceramics and Thin films, demixing in oxides, diffusion in multicomponent systems, mixed conduction in ß Alumina, crystallography, shape memory alloys, Martensite and Martensitic transformation, laser rainbow hologram, electron hologram.
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