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Faculty This site

Physics

Name	Research Interests
Asst 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.
Asst 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.
Assoc Prof Ang Lay Kee Ricky	The details can be founded in his web page: http://www3.ntu.edu.sg/home/elkang/
Asst Prof Bjoern Holger Neu	Dr. Neu's areas of expertise are Biophysics and Biorheology. His research work focuses on the stabilization and destabilization of blood and its clinical significance in diseases, blood cell mechanics, cell interactions with biomaterials and the fabrication of multifunctional nano- and microcapsules for biotechnological applictions.
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).
Asst 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.
Dr Chen Guang	His research interests include Research on Magneto-Rheological Fluid and its Applications, and Fundamental research on Dynamics and Continuum Mechanics (including Rheology and viscoelasticity) .
Asst Prof Chen Lang	Dr. Chen has worked on ferroic systems including ferroelectrics, ferromagnetic, multiferroic thin films as well as nanostructured multiferroic materials. He also initiated the projects of making nanostructured NIM heterostructures using ferroelectrics and multiferroics. He is also interested with other functional thin films & devices.
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.
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.
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.
Asst 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 than in this poor RIMS system 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
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	Controlled Synthesis and optical/electrical properties of semiconductor nanostructures, ternary compound nanotube/wires and ferroelectric nanostructures. Current research topic is in-situ observation of structural transformation of nanomaterials, and their corresponding electrical properties.
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.
Dr Gagik Gurzadyan	Prof Gurzadyan's areas of expertise are ultrafast laser spectroscopy, laser photochemistry and photobiology of DNA, nonlinear optics and crystals, spectroscopy of upper-excited electronic states of biomolecules. His current research works focus on femtosecond charge transfer processes in DNA and proteins, photoinduced excited state dynamics of chromophore/protein systems.
Asst Prof Georg Lothar Thimm	My main research interest is in the application of computer science in engineering and crystallography (e.g. in CAE or product life-cycle management, preferably in collaboration with researchers of complementing expertise or industrial partners.
Assoc Prof George Chung Kit Chen	Research experience in 3 main areas: 1) Thermal conductivity measurement and modeling of thin films, 2) Diffused optical wireless communication, and 3) Bio-imaging. For the thermal conductivity measurement and modeling of thin films: Using the pulsed photothermal reflectance technique, the intrinsic thermal conductivity of the following materials- GaAsN, AIN, CNT, ta-C, SiO2, Au and the thermal resistance of their interface have been determined. The thinnest film measured was 20nm, For the diffused optical wireless communication: We studied how to achieve uniform infrared light distribution and ensuring 54Mbps (without using equalization) in an indoor environment, invented a technique to redistribute the power due to zero order of CGH (computer generated hologram), designed and demonstrated that white LED can be used for both illumination and communication purpose, and designed an optical wireless communication system for aircraft passenger cabin. For the Bio-imaging: We developed a photothermal imaging and response system that can overcome traditional diffraction-limit of microscope. The system can provide high spatial resolution (~20nm) and high temporal resolution (~1microsecond); the system can also monitor changes of a live cell over time.
Asst Prof (Adj) Gong Yandong	Nonlinear fiber optics, Ultrafast fiber optics, Fiber-optic sensor, Photonics devices and Terahertz fields.
Assoc Prof Hu Junhui	Piezoelectric and ultrasonic actuators, energy harvesting by piezoelectric devices, ultrasonic manipulations of small particles and liquid,ultrasonic water treatment, piezoelectric transformers, ultrasonic transducers and other electromechanical devices
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
Prof Huang Kerson	1. Protein structure and protein dynamics 2. Statistical mechanics 3. Quantum field theory
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.
Asst Prof Jim Chen Chin-Kuang	Computational Fluid Dynamics Molecular Dynamics Turbulent Flow Colloidal Transport Nano-fluidics
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.
Asst Prof Koh Tieh Yong	Tieh Yong's main research activity in the last few years involves the verification and adaptation of the Coupled Ocean-Atmosphere Mesoscale Prediction System (COAMPS) for Southeast Asia. The aims are to improve numerical weather forecast capability in the equatorial tropics (by way of the application of science to the betterment of society) and to use mathematical and computational models 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 Kuo Jer-Lai	Structure and Properties of H-bonded clusters Computational Chemistry (reaction mechanism for organic reactions, proton transfer processes, ?) Order/disorder transitions in ice physics and semiconductor alloys Application of Genetic and Evolution Algorithms in Material Engineering Larger scale computer simulations via first principle methods Development of multi-scale simulation methods Surface adsorption process
Assoc Prof (Adj) Lai Kin Seng	-Design and development of high power diode pumped solid state and fiber lasers. -Non-linear optics and optical parametric oscillators for wavelength conversion. -Remote sensing technologies and applications using different techniques, such as differential absorption LIDAR (DIAL). -Coherent and incoherent laser beam combining techniques. -Adaptive optics for correction of phase aberrations. -Laser beam propagation in atmospheric turbulence. -Ultrafast femtosecond lasers and applications (filamentation effects and white light generation).
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 diffuse optical tomography (DOT) and its variants such as fluorescence diffuse optical tomography (fDOT) and bioluminescence tomography (BLT). He is experienced in both instrumentation and numerical image reconstruction, and is actively performing research on building a clinical imaging device for breast cancer screening.
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.
Asst Prof Li Hua	Dr. Li Hus's area of expertise is Computational Engineering. His current research works focus on the modeling and simulation of MEMS focusing on the use of smart hydrogels in BioMEMS applications; the development of advanced numerical methodologies; and the dynamics of high-speed rotating shell structures.
Asst Prof Li Lain-Jong	Carbon Nanomaterials
Asst Prof (Adj) Liu Jinping	epitaxy, gate oxide and other front end of line processing for advanced devices.
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.
Assoc Prof Mei Ting	Artificial mesoscopic structures and nanophotonics Photonic integrated circuits band gap engineering technology low dimensional devices and physics nanocrystal semiconductor materials and devices infrared imaging technologies, QWIP/QDIP and microbolometer.
Asst 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, Evanescent and Surface Plasmon lithography(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 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 Nguyen Nam-Trung	* Silicon-based microtechnology * Laser micromachining of polymers * Bonding of polymeric substrates * Hot lamination of polymeric multi-layers * Polymeric surface micromachining * Forced convection in microchannels * Non-linear acoustic effects (acoustic streaming) in microchannels * Convective/diffusive transport of pressure-driven flow in microchannels * Hydrodynamic spreading and hydrodynamic focusing * Taylor-Aris dispersion of pressure-driven flow in microchannels * Multiphase flows in microchannels * Thermocapillary flows in microchannels * Droplet formation and manipulation in microchannels * Viscoelasticity in microscale * Transport of ferrofluids in microchannels * Microchannels * Microvalves * Micropumps * Microgrippers * Micromixers * Microdispensers * Microsensor for interfacial tension * Micro fuel cells * DNA amplifier * Microdevice for capillary electrophoretic separtion * Lab on a chip (LOC) for detection of biochemical agents * Handheld platform for LOCs * Micro particle image velocimetry (micro-PIV) for diagnostics of velocity fields in microfluidic devices * Fluorescent measurement for diagnostics of concentration fields in microfluidic devices * Fluorescent measurement for diagnostucs of temperature fields in microfluidic devices * In-situ optical detection in microchannels * High-speed cinematography for diagnostics of dynamic processes in microscale
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 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.
Asst 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.
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 spectrometry, electrophoresis, chromatography, for (Bio)chemical application, 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.
Asst 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.
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.
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 Thermo-Fluid Mechanics, Applied Mathematics and Biophysics. His current research works focus on Nano/Micro Fluids, DNA/Protein Modelling and Mathematical Strategame Theory.
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 applications to number theory.
Asst 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	A. Energy Transfer Mechanisms in Doped Semiconducting Nanostructures In this work, we seek to understand the dynamics of the energy transfer processes between the host and the dopants in a doped semi-conducting nanostructure system (i.e. Mn-doped ZnS spherical nanoparticles and nanorods). We are particularly interested in understanding the spin-flip processes between the host and the dopants. The system will be probed using both time-resolved photoluminescence and transient absorption spectroscopy. The knowledge gained would aid in the fabrication of nanoparticles/nanorods with enhanced luminescent efficiency through suitable surface modifications and processing. B. Energy Transfer Mechanisms in Organic Light Emitting Devices & Organic Photovoltaic Devices In this work, we seek to understand energy transfer mechanisms in organic electronic devices under electrical and optical excitation, in particular that of the exciton and polaron dynamics resulting from interchain effects in an OLED under device conditions (field-induced changes in the optical behaviour). The radiative recombination pathways will be investigated using both time-resolved photoluminescence and time-resolved electroluminescence. The non-radiative relaxation pathways will be probed by transient absorption spectroscopy. The knowledge gained would serve to guide the design of such organic materials in improving luminescent efficiency through chemical and structural modifications. C. Relaxation Dynamics of Colossal Magneto-Resistance Manganites Colossal magnetoresistance (CMR) manganites have been subjected to extensive research due to their unique magnetic and electrical properties. The physical origin of this phenomenon has been attributed to the double-exchange model. However, this double-exchange mechanism of carriers between Mn3+ and Mn4+ ions alone cannot account for all the observed changes such as metal-insulator transition in these materials. Other factors include the highly correlated nature of the spin, lattice, charge and orbital degrees of freedom. Ultrafast optical techniques are powerful probes for investigating the quasi-particle and spin relaxation dynamics in these strongly correlated systems. D. Relaxation Dynamics of Highly Spin-Polarized Ferromagnetic Systems In this work, we seek to understand the spin-relaxation mechanisms of a highly spin-polarized ferromagnetic system (e.g. (La, Sr)Ti1-xCoxO3) on the ultrafast and Landau-Lifshitz-Gilbert time scales. These relaxation mechanisms involve electrons, spins and lattice as well as the different couplings in between them. The detailed understanding of the spin-relaxation mechanisms is still lacking. TR-MOKE measurements address the demagnetization and relaxation of the spin system while transient reflectivity measurements give an insight on the electronic and lattice relaxation processes. The knowledge gained would guide the design of oxide DMS spintronic devices such as spin injection devices and spin FETs.
Assoc Prof Sun Changqing	Surface science and thin film technology. Nano and microelectronics. Condensed matter physics and materials science.
Asst 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
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
Asst 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)
Assoc Prof Timothy John White	White's research is broadly in the areas of Solid-state chemistry and mineralogy (catalysis, ion conductors, porous materials; toxic and nuclear waste); crystal chemistry and crystallography; State-of-the-art analytical techniques in materials chemistry and environmental science. Major project over the past 25 years includes: (1) Team member, Griffith University Synroc Research Group (1982-1985) with special responsibility for structural and chemical characterisation of the nuclear waste form. (2) Team leader (1991-1992) responsible for conceptualising a novel process for the continuous production of high temperature superconducting wires which attracted $2.2 million of syndicated venture capital. (3) Group leader, ANSTO (1985-1988) obtained funding for proving synroc as a medium for the incorporation of real high level nuclear waste. Negotiated access to Euratom Facility at Karlsruhe (Germany) for investigation of active synroc. Responsible for first in-depth characterisation of Japanese synroc that enabled high Cm-244 levels to be incorporated for accelerated radiation damage studies at the Japan Atomic Energy Research Institute. (4) Consultant (1989 to 1997)) to Nuclear Waste Management Pty. Ltd. and Costain Engineering (England) to facilitate technology transfer of synroc to Russia and develop viable scale-up procedures. (5) Team leader (1990) at University of Queensland in a program to develop novel ceramic formulations to incorporate high-sodium, breeder reactor and TRU wastes. (6) Team leader (1991) at the University of Queensland for the development of new and improved waste forms of Portland cement and pozzolanics containing heavy metal wastes. (7) Research Director (1993-1996) as Multiplex Professor of Environmental Technology developing ceramic methods for the treatment of toxic metal wastes at industrial and mineral processing sites in Australia. (8) Team leader (1997 - 1999) at ETI responsible for evaluating low level radioactive waste contamination at an industrial site. Work included site assessment, development of remediation strategy in the laboratory and full site remediation including solidification of sludge and preparation of material for repatriation to Europe. (9) Team leader (1999 - 2001) at ETI responsible for validating the performance of membrane technology for the recovery and recycling of used automotive oil. Duties include the design and supervision of laboratory test work, and the collection of data from industrial pilot plants. (10) Director (2001-2004) at IESE responsible for developing a program of advanced research for the development of new ecomaterials for environmental protection. Major materials under investigation include catalysts (including decorated nanocatalysts and nanocomposites), modified and intercalated clays for sorption and fixation of waste, microporous tectosilicates and tectotitanates as selective ion exchangers, macroporous materials derived from opaline templates as chemical reactors, development of synchrotron XAFS for environmental studies (in collaboration with SSLS). (11) Co-PI (2003-2007) leading collaborative project with the National Research Council of Canada designing cermic materials for the stabilisation of incinertor ash. (12) PI (2003-2007) of collaborative project with Frauhofer UMSICHT to develop composite photoacatlytic materials. (13) PI (2003-2007) to optimise performance of photocatalysts through adjustment of compostion and morphogy.
Prof Tso Chih Ping	Basic and applied studies in heat and fluid flow, including electronics cooling, microchannel flow, boiling and two-phase flow, refrigeration, nuclear engineering, and thermal environment. Minor interest in ventilation, thermal radiation, and image processing.
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	Spintronics Magnetism
Asst Prof Wang Qijie	My current research interests are to explore theoretically and experimentally nano-structured semiconductor and metal materials, and devices 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 lasers in both mid-IR (3-30 um) and Terahertz (60-300 um) frequency regimes to improve their performance. Currently, I have several fully funded (including tuition fee, scholarship, and other support) Ph.D research scholarship positions and one postdoctoral position available in my research group. I am looking for strongly motivated both postdoc and Ph.D researchers dedicated to the cutting edge research in semiconductor laser devices, nanotechnology, optical chaotic microcavities, and optics/photonics.
Asst Prof Wong Chee How	Asst/Prof. Wong Chee How's research interests include molecular dynamics simulation; modeling of nano-materials; nano-mechanics; hard disk drive head-disk interface; and thermal protrusion in hard disk drive.
Assoc Prof Wong Kin Shun, Terence	Professor Wong's research focus is in: 1. Organic electronics: organic light emitting diodes; organic photovoltaic devices, printing processes for large area electronics. 2. Silicon nanoelectronics: mechanisms of local strained silicon devices; measurement of biaxial stressed silicon 3. Characterisation techniques: use of synchrotron x-ray scattering to characterize the structural properties of electronic materials 4. Interconnects: deposition of low-k dielectrics and material property characterization; sol-gel synthesis of dielectrics; high frequency measurement and modeling Cu/low-k interconnects. His current research focus is on organic electronics and silicon nanoelectronics.
Assoc Prof (Adj) Wu Ping	Dr. Wu Ping's expertise is in Materials Chemistry, and Biological Chemistry. His current research works focus on new materials for alternative energy, green materials, biomaterials and advanced electronic materials.
Asst Prof Wu Tao	Dr. Wu?s areas of expertise are spintronics, multiferroics, oxide thin films,functional nanomaterials and devices.
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.
Assoc Prof Yu Ching Man, Simon	Research Areas/Interests Non-intrusive measurement technique: Laser-Doppler anemometry, Phase-Doppler anemometry, Particle Image Velocimetry and Planar Laser Induced Flourescent and their applications to turbulent mixing flows, biofluids Mechanics, environmental fluid mechanics and fundamental plume and jet studies. 12 MEng students graduated and 11 PhD students graduated (up to 2007) PhD candidates currently under supervision: Gao Lei: Vortex Ring dynamics using Particle Image Velocimetry Gan Zhiwen: Three-phase bubble column using Phase Doppler anemometer Wan Chao: Mixing of a heated jet Koh PK: Cold Spray Analysis (Part-time)
Assoc Prof Yu Siu Fung	His main research interest includes the fundamental study, design and optimization of semiconductor lasers including distributed feedback lasers and vertical cavity surface emitting lasers. He has contributed to the development of computer models to study the dynamic behavior of semiconductor lasers. He also involved in the design and analysis of high power semiconductor pumped lasers. He has been developed k.p method to calculate quantum wells and quantum cascade structures for the realization of long and mid-infared wavelength optical gain materials. Currently, he has investigation on the development of surface plasmonic resonant lasers using metallic optical waveguide with optical gain media. He is also involved in the development of low-loss high-power polariton LEDs and lasers. In addition, he has been devoted to the development of spin-LEDs and Lasers using dilute ZnO ferromagnetic thin films at UV wavelength.
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
Assoc 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.
Assoc Prof Zhang Qing	Prof Zhang Qing's areas of expertise are electronic devices and materials. His current research works focus on carbon nanotube based devices and fundamentals. CVD diamond and diamond-like carbon films based devices, silicon related thin films, etc.
Asst 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.
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/multiple-gate CMOS.

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