Department of Physicsfizik.um.edu.my/booklet.pdf · The Physics Department being one of the...

Department of PhysicsDepartment of PhysicsDepartment of Physics

89 Faculty of Science University of Malaya

The Physics Department being one of the departments in the Science Faculty complements the other sciences in providing our students with an excellent knowledge in physical sciences. As the sciences now move towards a more analytical and quantitative approach, physics provides the essential underlying basis.

The Department is supported by 46 academic staff in various fields of specialization and assisted by 28 supporting staff in the smooth running of the various laboratories and administration.

We offer a variety of coursework-based postgraduate programmes covering both basic and applied physics tailored to the individual needs and interests. We also offer research-based masters and doctoral programmes.

Our staff are actively engaged in research work in various disciplines of physics, supported by funds granted from the Ministry of Science, Technology and Innovation and the Ministry of Education, as well as from the internal funds of the University of Malaya. We also have access to external funding from national and international bodies, in the form of research grants as well as consultancy awards.

The Department also plays an active role in various professional bodies, local and international. We were designated as an International Centre for Theoretical Physics Affiliated Centre for 1991 – 1995. We host the official office for the Institut Fizik Malaysia (IFM) and the Asian African Association for Plasma Training (AAAPT). The AAAPT is a Plasma Network of 44 institutions from 24 countries in the Asian and African regions.

Prof. Dr. Abdul Kariem Mohd Arof

Department of Physics

*The new Head of Department starting from 1st of July 2011 is Prof. Dr. Harith Ahmad

90 Faculty of Science University of Malaya Department of Physics 90

Officer in charge: Ms Zurina Marsuki (Tel: 4076 )

Workshop (Khairul Anuar bin Abdul Karim):

Milling machine, Lathe, Shearing, Circular saw

Radiation Laboratory (Azman bin Mat Nor):

HPGe detector- EG & G Ortec Gamma cell 2200 – High Dose Rate

Space and Astronomy Laboratory (Saedah binti Haron):

Robotic telescopes: Celestron 14" and Takahashi 6", Telescope Meade: 12" and 8", CCD Cameras: STL-4020 and STL-1001E, Stellar Spectrograph

Radio Astronomy Observatory (Mohd Khairi Mohd Nazir)

2.3-meter fully steerable radio telescope, 1.8 GHz and 2.8 GHz portable RFI spectrum analyzers

Plasma Laboratory (Jasbir Singh):

Oscilloscope, Microscope, Microcapilary plate, High vacuum molecular pump, Digital oscillator,

Neutron flux measurement, Radio frequency generator, Vacuum generator level 10-5, High voltage generator, Soft X-ray.

Computational Physics Laboratory (Saniah binti Ariffin, Amir Shah):

Computers

High Energy Density Physics Laboratory (Zainal bin Aris):

Soft X-ray

Solid State Laboratory (Norlela binti Mohamed Shahardin):

Clean rooms: 1 K and 10 K, mask aligner photolithography, Langmuir-Blodgett deposition, plasma enhanced chemical vapour deposition (PECVD), KLA Tencor profiler, current voltage characterization,

glovebox, FTIR, Spectrophotometers: UV/VIS and Luminescence

Imaging Laboratory (Zurina binti Marzuki, Mohamad bin Aruf):

Auger spectroscopy, SEM-EDX, XRD, AFM, microRaman

Material Science Laboratory (Nurhayati binti Abd. Wahab):

Thermally Stimulated Current System, Hioki LCR HI Tester, FTIR, Microscope, Ultrasonic Scanning System, Universal Tensile machine.

Photonics Laboratory (Ruhaida binti Bahru):

Optical Spectrum Analyzer, Tunable laser source, Digital Data Analyzer, Tunable laser source, UV laser, Tunable Laser Source

Planar Fabrication Laboratory (Chong Wuyi):

Flame Hydrolysis Deposition System, Inductively Coupled Plasma Dry Etcher, DC Sputtering System, Prism Coupler, Surface Profiler, Furnace System, UV Mask Aligner System, Glove Box, Multi cell charger

discharge, Ultrasonic welding


The department of physics has five research centers:

Center for Ionics (CIUM)

Low Dimensional Material Research Center (LDMRC)

Plasma Technology Research Center (PTRC)

Photonic Research Center (PRC)

Quantum Science Center (QSC)

There are research groups or labs in various exciting research fields as well. It is worth highlighting groups with small number of members but do research in state-of-the-art research topics as well as producing significant research output through high impact publications:

Radio Cosmology Research Group

Materials Science and Polymer Physics

Optics

High Energy Physics Research Group

Theoretical physics Laboratory

Carbon and Oxide Nanostructured Materials

High Energy Density Physics Laboratory

Quantum Optics & Nonlinear Photonics Structures

Organic and carbon-based semiconducting optoelectronics

Statistical Mechanics of Complex Plasmas

Langmuir-Blodgett and Biophysics

Laser material interactions and processing

Nitride Epitaxy and Nano-Electronic Devices


Research direction

Our research fields include the synthesis and characterization of nanostructured materials, specifically carbon nanotubes, graphene and metal oxides and carbide nanowires. The long term direction is to fabricate devices based on these materials for example novel electron sources based on field emission, nanocomposites and gas sensors.

Research Areas

Fabrication and Characterization of Nanostructured Materials: carbon nanotubes, graphene, metal oxide nanowires.

Applications of carbon nanostructures as field electron emitters

Application of metal oxide nanostructures as thermoluminescence detectors.

Application of carbon nanostructures and its composites as gas and vapor sensors

Research Accomplishments and Findings

Among the nanostructured materials successful fabricated are vertically aligned carbon nanotubes using palm oil, b-SiC nanowires without using any catalyst, SiOx nanowires. The characteristics of these materials have been studied in efforts to elucidate the underlying mechanisms of nanostructure. Applications of the nanostructured materials as thermoluminescence detector, alcohol vapor sensors and field electron emitter cathodes have been accomplished with some of these materials.

Carbon and Oxide Nanostructured Materials

Electron microscopy CNT from palm oil.

SEM of SiOx NWs and growth model

Field electron emission properties of VACNTs

Members and Collaborators

Professor Dr. Yusoff Mohd Amin,

Department of Physics,

University of Malaya.

Associate Professor Dr. Muhammad Rusop Muhammad

Nanoscience and Technology Centre,

University of Technology MARA.

Dr. Khalifa Al Azri/Dr. Majid Salim Al Ruqeishi.

Sultan Qaboos University, Oman

Project Leader

Assoc. Prof. Dr. Roslan Md Nor


Tel: 603-79674285

E-mail: [email protected]


Environmental Radiation: Radionuclides uptake in plants and animal, radon, radiocontamination

Applied Radiation: Radiation detector and dosimeter, archeaometry

Prof. Dr. Yusoff Mohd Amin [email protected]

Assoc. Prof. Rosli H Mahat [email protected]

Assoc. Prof Dr. Roslan M Nor [email protected]

Dr. Panakal John Jojo [email protected]

Collaborators

Prof. Dr. David Bradley, Reading

Prof. Dr. Nordin Ibrahim, UTM

Prof. Dr. Wong Chow San, UM

Assoc. Prof. Ithnin Jalil, UM

Research Output

Completed: 3 PhD 15 master

Current: 2 PhD 2 master

More than 200 publications including 20 ISI with 100 citations

1 patent

Members

Environmental and Applied Radiation Research Group


Research Direction

Glasses play an essential role in science and industry. Their chemical, physical, and in particular optical properties make them suitable for many applications. Many transition metal oxides can form homogeneous glasses when melted with glass forming substances such as P2O5, TeO2, GeO2, etc., which are important because of their semiconducting properties, switching behavior and potential applications. Our research focuses on the study of physical properties of transition metal oxide (TMO) glasses. Most of the work is centered around phosphate and telluride glasses systems.

Research Area

Measurement of the following:

Electrical Properties

Thermoelectric Power (TEP)

Optical Properties

Thermal Properties

Mechanical Properties

Research Findings

There are a lot of findings from this large research area in studying the electrical, optical, thermal and mechanical properties of TMO glasses. This research leads us to the following applications, which are cheaply produced with glass: switching and memory devices, electro – optical devices, transducers, superior insulators and dielectrics. The most important research which we are focusing is to study the TEP of TMO glasses, because today there is a critical need for renewable energy. Therefore TEP materials, which can convert heat into electricity, might be potential candidates. Transition metal oxides can be use for commercial thermoelectric applications because of its good thermal stability, lack of sensitivity to air and non-toxic. We have designed a special sample holder (at physics department) to measure the TEP of certain materials.

Fig. 2. Schematic representation of a random-network glassy form (top) and ordered crystalline lattice (bottom) of identical

chemical composition.

Project Leader

Dr. Daefalla M. Tawati

Physics Department,UM

[email protected]

+603 79674116 (Tel)

+603 79674116 (Fax)


Prof Dr. Abdul Kariem Mohd Arof

Physics Department, UM

Dr. Siti Rohana Majid


Glass Materials



Dato’ Prof. Dr. Muhamad Rasat Muhamad

Low Dimensional Materials

Research Centre, UM.

Pramod H. Borse

Scientist ‘E’, Centre for Nanomaterials,

ARC-International, Balapur P.O.,

Hyderabad, AP, India

Chia C. H., Radiman S.

Faculty of Science, UKM

Khiew P. S., Lim H. N.

Nottingham University of Malaysia

Research direction

Our graphene research includes synthesis of graphene and graphene oxide using various techniques from mechanical cleavage, rapid thermal expansion, chemical vapour deposition, chemical oxidation and reduction method, and liquid solution exfoliation method. Graphene is a truly 2-dimensional material with exotic nanostructure that comes with great properties. Intrigued by graphene properties, we are looking into the properties of graphene nanocomposites which include graphene/metal oxides, graphene/polymers, graphene/metal and graphene/metal sulphides. Graphene and graphene nanocomposites research is a hot research topic since the first discovery of graphene in 2004. Its status as the hottest material has been confirmed by the award of Nobel Prize in Physics 2010 to graphene pioneers, A. Geim and K. Novoselov.

Research Areas

Improved synthesis of graphene and graphene oxide

Graphene conducting electrode

Graphene and graphene oxide nanocomposites

Application: organic pollutant degradation, solar cells and photoelectrochemistry applications

Magnetic grapheme

Research Highlights

Simple and cost effective Simplified Hummers’ Method (SHM) has been carried out at room temperature for the preparation of large area graphene oxide (~ 7000 µm2) with almost 100% yield. Large area graphene oxide is highly desirable for fundamental research and technological applications of graphene and graphene oxide. In particularly large area graphene sheets are regarded as most ideal for transparent conducting films (TCFs). Furthermore, large area graphene oxide is also predicted to exhibit enhanced properties as compared to smaller area graphene oxide for thermal, electrical and mechanical properties of nanocomposites such as polymer, metal, metal oxide and metal sulphide nanocomposites.

Project Leader

Huang Nay Ming

Low Dimensional Materials Research Centre

Tel: 603-79674295

[email protected]

Graphene


Research Direction

High energy density physics (HEDP) is a study of the collective properties of matter under extreme conditions of temperature (millions of degrees) and pressure (many thousands of atmosphere). HEDP is becoming increasingly important to both fundamental science and industry -for instance HEDP describes the behavior of matter in the astrophysicals systems, and provides new light sources for production of more refined integrated circuits. Perhaps the greatest application of HEDP is yet to emerge: the creation of controlled thermonuclear fusion, providing a clean energy source of virtually unlimited reserves. HEDP is presently a topic of extremely active research with the building of multi-million (and billion) dollar international facilities.

Research Areas

1. X-rays lasers

2. High energy density Z-pinches

X-rays laser facility at the University of Malaya

X-ray lasers provide an example of using one type of high energy density system to produce another that can then be used in high energy density experiments

Project Leader

Prof. Dr. Kwek Kuan Hiang


University of Malaya

[email protected]

+603- 79674287

Collaborators

Imperial College, London

High Energy Density Physics


Research direction

The objectives of this research are:-

To search for any potential particles that might exist in the high energy e-p interactions.

To develop the electronics and the front end components for the detectors used in the high energy physics experiments.

To verify the standard model used in the elementary particle physics.

Research Areas

Particle physics and experiments, Field Programmable Gate Arrays (FPGA), Detector physics and instrumentation, Data analysis, grid computing, Accelerator physics


High Energy Physics Research Group

Total energy distribution of halomuons in FCAL and RCAL (solid line), in comparison with halomuon energy distribution in FCAL (dash line)

Forward

calorimeter

of ZEUS

detector

μ+

Muons μ+ moving in straight trajectory from rear to front part of ZEUS calorimeter. Accelerated protons interacted with rest gas to produce π+ that decayed into μ+

920GeV30GeV

Reconstructed mass of vector meson φ (1020) from channel:

00)1020( SLKK

Momentum (GeV) of 0

LK

Reconstructed mass (GeV) of 0

LKMomentum (GeV) of neutron Reconstructed mass (GeV) neutron

Reconstructed mass of baryon Λ from channel:

0n

Project Leader

Prof. Dr. Wan Ahmad Tajuddin Wan Abdullah


Tel: 603-79674192,

e-mail: [email protected]

Researchers:

Prof. Dr. Zainol Abidin Ibrahim

Faridah Mohd Idris (PhD)

Zulidza Zulkaply (MSc)

Zukhaimira Zolkapli (MSc)

Collaborators

ZEUS Collaboration at DESY , CMS(Compact Muon Solenoid) at CERN Belle Experiment at KEK


Research direction

Current research works are projected towards achieving biomaterial based/inspired device preparation and fabrication. Materials involve various Photosynthetic Bio-Materials (Bacteriorhodopsin, Chlorophyll, etc) and other biomaterials (DNA, etc) in general.

Research Areas

Langmuir-Blodgett, Molecular Electronics, Photosynthetic Bio-Materials (PBMs): PBM thin and thick films and PBM-based Applications, Nano-Gaps and Nano-Patterning

Research Accomplishments and Findings Recently, based on a novel technique using DNA strands (Patent number: P12010700067), we have developed nano-gaps that can be utilized for single molecular electonic and nano-patterning applications. Current optimization works involving this technique, opens up many other exciting possibilities in the fields of nano and micro electronics and semiconductor.

Project Leader

Dr. Vengadesh P.


+603-79674038

[email protected]

Research Group

Low Dimensional Material Research Centre (LDMRC)


Langmuir-Blodgett and Biophysics


Research direction

The research is focused on the laser and material processing specifically using different type of laser like excimer laser, diode-pump solid state laser and femtosecond laser. Research interests include of laser materials interaction and processing (i.e. laser ablation and micromachining) concentrated on the various type polymers. The findings have been supported with stimulation for the agreement. The finding seen nanoscale features appeared on the ablated sample and our aim is to investigate the phenomena with underlying physics. In PLC laboratory, the interest is also on the polymer planar waveguide and on the solution doping technique. The potential future research will be on fabrication of metamaterials and plasmonics studies using an ultra-fast femtosecond laser.

Research Areas

Laser materials interaction

Laser processing

Polymer /silicon waveguide technology

Project Leader

Dr. Rozalina Zakaria

Physics Department

University of Malaya

+603 79674177

[email protected]

Research Group

Photonic Research Centre (PRC)

Department of Physics, UM.

Collaborators

Department of Electrical and Computer Engineering, National University of Singapore

Department of Physical Sciences,

University of Hull, HU6 7RX, Hull, United Kingdom

Laser Physics and Photonics


Research Direction

Our research fields include polymer electrolytes, composite electrolytes (ceramic filled polymer electrolytes), and gel electrolytes which have applications in the fields of battery and capacitor technologies, electrochromic windows, and solar cells. By understanding the structure-property relationships in these technologically important materials using various techniques such as impedance spectroscopic, infrared spectroscopic, scanning electron microscopic, x-ray diffraction, etc. and thereby developing new electrolytes is of major interest in this area. More recently a new exciting class of materials based on biodegradable polymer has been developed in our group.

Gel polymer electrolyte Scanning electron microscopy images of GPE

FTIR for polymer electrolyte XRD for polymer electrolyte

Project Leader

Assoc. Prof. Dr. Zurina Osman

[email protected]


Prof. Dr. Zainol Abidin Ibrahim

Prof. Dr. RosiyahYahya

Mrs. IzlinaSupa’at

AP Dr. NorlidaKamarulzaman (UiTM)

Materials Science and Polymer Physics


Introduction

Gallium nitride (GaN) is a wide band-gap III-V compound semiconductor material with large tunable direct band-gap range from 0.7 eV for InN to 6.2 eV for AlN, allowing fabrication of high-performance optoelectronic emission and sensing devices in the ultra-violet, visible, and infra-red spectral range. Additionally, 2-dimensional electron gas (2DEG) at AlGaN/GaN interlayer allows for the fabrication of high-performance power high-electron mobility transistor (HEMT), which excels over conventional Si-, GaAs- and SiC-based transistors.

Research Areas

Development of novel metal-organic halide vapor-phase epitaxy (MOHVPE) growth method.

Thick-film nitride epitaxial growth for the development of GaN and AlN free-standing substrate, lateral-epitaxial overgrowth (LEO), pendeo-epitaxial overgrowth (PEO), etc.

Thin-film nitride epitaxial growth for the development of strained-layer superlattices (SLS), distributed Bragg reflector (DBR), quantum well (QW), LED, LD, PD, HEMT, etc.

Thin/thick film characterization and device evaluation.


The research includes epitaxial growth, film characterization, device fabrication and device evaluation of InGaN-based blue/violet LED and LD on low-cost silicon (111) substrate and GaN free-standing substrate. A significantly high-performance blue LED grown on Si(111) substrate with good uniformity of emission peak wavelength, narrow emission wavelength FWHM, low threading-dislocation density, increased internal quantum efficiency, and improved current-voltage characteristics has been achieved.

Project Leader

Dr. Ahmad Shuhaimi Bin Abu Bakar


Tel: +603-7967-4147

Fax: +603-7067-4146

[email protected]

[email protected]

Nitride Epitaxy and Nano-Electronic Devices

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Collaborators

Prof. Dr. Takashi Egawa

Research Center for Nano-Device and System, Nagoya Institute of Technology, Japan.

Prof. Dr. Zainuriah Hassan

School of Physics,

University of Science,

Penang, Malaysia.

FFP of InGaN blue LD Good uniformity PL mapping

High-performance blue LED on Si(111)


Research direction

Physics, chemistry, biology and engineering are no longer can be treated as separate subjects at research level. The convergence of physics, chemistry, biology and engineering has been increasingly evident in our life. This convergence has often resulted in spectacular innovations.

The focus of research is multidisciplinary where research that takes place at the edges of traditional disciplines and across traditional subject boundaries. The current research focuses are organic electronics, organic optoelectronics, carbon-based electronics and optoelectronics based devices concentrating on their semiconducting properties and device performance.

Research Areas

Organic light emitting diodes (OLED)

Organic field effect transistor (OFET)

Organic semiconducting composite devices

Semiconducting carbon nanotubes.(sm-CNT)

Low band gap organic photovoltaic devices

Semiconducting liquid crystalline materials

Molecular electronics


Installation of state of the art organic electronic processing inert environment and vacuum deposition glovebox. We have successfully fabricated state of art of organic field effect transistor, organic light emitting diodes.


Assoc. Prof Norbani Abdulah

Dept. of Chemistry,UM

Prof Dr. Masahiro Funahashi

Kagawa University, Japan

Prof Dr. Steve Kelly

University of Hull,UK

Prof Dr. Mary O’Niel

University of Hull,UK

Organic and carbon-based semiconducting electronics and optoelectronics

Luminescent semiconducting polymer OLED and OFET

Project Leader

Dr. Kai Lin Woon

Department of Physics, UM

Tel: 603-79674281

[email protected]


Dielectric Barrier Discharge for Bacteria Sterilization Research Direction

The application of non-thermal plasmas in the treatment of living organisms has created a new promising interdisciplinary field of ‘plasma medicine’. Non-thermal plasmas are desirable as their effects can be tuned for specific bio-purposes such as wound healing and cell detachment. Treatment can be localized resulting in little damage to surrounding tissue, and it is environment friendly dispensing with use of toxic chemicals.

Research Areas

Electrical characterization of a parallel plate DBD

Deactivation of gram positive and gram negative bacteria

Developing a DBD plasma jet

Research Findings

The DBD was filamentary tending to be more stable at smaller gap, dielectric with higher constant and longer time of operation. Deactivation of 3 types of bacteria (E. Coli, Salmonella, Bacillus) was achieved within less than 2 minutes when treated with plasma.

Simulation and Measurement of EM fields, mode transitions and electron temperature and density in planar ICP

Research Direction

ICP can produce high level of purity and high electron density (1017-1018 m-3). This is favorable to many semiconductor manufacturing processes and is widely used since the 1990s. Efforts to improve the efficiency of this technology require better understanding of the underlying processes in the plasma. These efforts include measurement of the fundamental plasma characteristics and simulating the conditions in the ICP.

Research Areas

RF compensated Langmuir probe diagnostics

Measurement of magnetic fields in ICP

Mode transitions in ICP

Simulation of EM fields, mode transitions, plasma characteristics in ICP

Research Findings

Hysteresis occurs at mode transitions which is dependent on RF power and argon pressure in the ICP. The H mode is sustained at lower electron temperature but higher electron density when compared to the E mode. Simulation of the fields and mode transition in the ICP is done using MATLAB and is modeled based on works done byEl-Fayoumi et al.[J. Phys. D: Appl. Phys.,31, 3082-3094 (1998)]and Turner et al.[Plasma Sources Sci. Technol.,8, 313-324 (1999)].

Plasma diagnostic and measurements

Project Leader

Assoc. Prof. Dr. Chin Oi Hoong

Physics Department,UM

[email protected]

+603 79674091

Survival rate of bacteria under DBD treatment

0.01

0.1

1

10

100

0 20 40 60 80

Duration of treatment, t in s

Su

rviv

al ra

te in

%

E.Coli

Salmonella

Bacillus

None survived

at t=120s

None survived

at t=30s

None survived

at t=120s


Prof. Dr. Wong Chiow San


Prof. Dr. Thong Kwai Lin

Institute of Biological Sciences, UM


Project Leader

Dr. Yap Seong Ling


Tel: 603-79674346,

E-mail: [email protected]

Research Area

Pulsed discharge plasma

Plasma radiation sources

Plasma focus/Plasma fusion

RF plasma

Plasma Processing of materials

Laboratory dusty plasma

Spectroscopy & optical diagnostics

Non-thermal plasma

Dielectric Barrier Discharge

Exploding wire discharge

Nano-particle synthesis

Computation/Particle matter interactions

Neutron activation analysis

Research Findings

Pulsed discharge plasma as radiation sources

Laser & Particle Beams 25: 497-502, AIP CP1017:335

Plasma focus as ion generator and neutron source

Jpn. J. Appl. Phys. 44: 8125-8132, AIP CP1150: 444

Study of dusty plasma and dust ion-acoustic soliton.

Phys. Plasma 16: 042311, Plasma 16: 072102, 072110

Exploding wire discharge for nano-particle synthesis

AIP Conference Proceedings CP1017: 341

Research Funds

University of Malaya Research Grant (UMRG)

MOHE Grant (FRGS)

Malaysia Toray Science Foundations (MTSF)

Researchers

Prof. Dr. Wong Chiow San, Prof. Dr. S. V. Muniandy, Prof. Thong Kwai Lin, Chan Li San (Ph.D), Siti Sarah Binti Safaai (Ph.D), Solmaz Saboohi (Ph.D), Mostafa Ghomeishi (Ph.D), Zubair Niazi (Ph.D), Ngoi Siew Kien (M.Sc.), Lim Lian Kuang (M.Sc.), Lee Seng Huat (M.Sc.), Lee Yen Sian (M.Sc.), Tay Wee Horng (M.Sc.), Neoh Yuen Sim (M.Sc.), Norhayati Binti Mohd Nasir (M.Sc.), Fong Shin Chien (M.Sc.), Jasbir Singh (Asst. engineer)

Collaborations

Nano-UV, Courtaboeuf cedex, France

Specscan Sdn Bhd, Malaysia

INTI International University College

University Kebangsaan Malaysia

Physics Dept, Chulalongkorn University

Physics Department, Thammasat University

Maejo University Phrae Campus, Thailand

Shanghai Jiaotong University, China

Asian African Association for Plasma Training (AAAPT)

International Centre for Dense Magnetized Plasmas (ICDMP)

Institute for Plasma Focus Studies, Australia

Plasma Technology and Plasma Physics


Project Leader

Prof. Datin Dr. Saadah Abd Rahman


Tel: 603-79674398/4147

[email protected]

Members

Assoc. Prof. Dr. Siti Meriam Abd Ghani, Dr. Zarina Aspanut, Goh Boon Tong, Richard Ritikos, Chan Kee Wah, Chong Su Kong, Ilyani Putri Jamal, Najwa Rosli

Collaborators Assoc. Prof. Dr. Sow Chorng Haur, NUS Assoc. Prof. Dr. Chen Tu Pei, NTU Dr. Dee Chang Fu, UKM

Research Direction

Nanostructure technology has become a hot field of research and emerging application in recent years. It is one of the most attractive and growing research areas in materials science. Among these, nanostructures solar cells have become increasingly important to green technology.

Here, we are an inter-disciplinary group of curious people exploring the synthesis, properties, and applications of inorganic nanostructures. Our current research focuses are optimization carbon and silicon based nanostructure synthesis and the studies of plasmonic metal nanoparticles.

Research Areas

Silicon nanowires (SiNWs)

Plasmonic nanoparticles (NPs)

Nanocrystalline silicon (nc-Si)

Carbon nitride nanostructures

Carbon nanotubes (CNTs) & nanorods


We have our homebuilt Plasma Enhanced Chemical Vapor Deposition (PECVD) and Hot wire Chemical Vapor Deposition (HWCVD) system. We have first reported HWCVD synthesized indium-catalysts SiNWs. Nanocomposite of silicon suboxide films embedded with gold nanoparticles has also been achieved by new hybrid method of HF-PECVD for the first time. Catalyst-free formation of vertically aligned carbon nanorods as induced by nitrogen incorporation has been successfully fabricated. Many other results of our works have been published in many high impact factor journals.

Si Nanowires, Au Nanoparticles and Carbon Nano-crystallites

Inorganic Nanostructures for Renewable Energy Application


Research direction

Our research fields include quantum optics, nonlinear optics, laser physics, novel optical materials, atomic and molecular physics and quantum information. Quantum optics provides access to some of the most exciting physical phenomena in optics at atomic level and single photon level. Combining novel quantum effects arising fromnonlinear laser-matter interactions with novel nanomaterials is the basis of nanophotonic research that is developing rapidly. The study requires quantum optical techniques and will lead to energy-efficient optical devices for ultrafast optical information processing and sensing.

Research Areas

Laser Trapping and Cooling of Atoms and Molecules

Novel Photonic Structures

Quantum Coherence with Nonclassical Photons

Raman Spectroscopy of Chemicals and Particles

Intense Laser Interactions

Quantum Plasmonic


Our research includes studying the optical properties of superconducting-dielectric photonic bandgap structure for superconducting optoelectronics. We have proposed the first laser cooling scheme for molecular gas which uses only a few lasers. The trick is to have only one spontaneous emission for each molecule. We also study a LIDAR scheme which uses backscattered CARS signal for real-time spectroscopic detection of molecular species. Surprisingly, the backscattered light is only ten times weaker than the forward. For quantum information with nanophotonics, we develop techniques to study second order correlations of nonclassical photon pairs using full quantum Langevin theory. We showed that an array of quantum emitters can produce intense nonclassical light and a circular array of lasers can produce superintense laser field that opens up new physics in nonlinear quantum vacuum.

Quantum Optics & Nonlinear Photonics Structures

Nonclassical Talbot effect Superintensity with s± polarized lasers

Reflection spectra for gain

Project Leader

Assoc. Prof. Dr. C H Raymond Ooi


Tel: 603-79674092,

E-mail:[email protected]


Texas A&M Univ,

Max-Planck Institut fuer Quantenoptik,

Nanyang Tech. Univ. Singapore,

Chinese Academy of Science.


Research direction

Developing Radio Astronomy facilities in Malaysia (the first ever in Malaysia)

Building and creating Radio Astronomy community in Malaysia

Joining the global project of Global-VLBI and Square Kilometer Array (SKA) in Australia/South Africa

Research Areas

Radio Frequency Interference (RFI)

Astronomy and Astrophysics

Cosmology

Radio Astronomy General

Brief description of Research with Accomplished Results

Setting up the first radio astronomy telescope in Malaysia (a 2.3-meter fully-steerable single dish radio telescope)

Funding sources

MOSTI e-science fund, 2006-2009, RM90,800

Research University Grant, 2007-2008, RM75,000

PJP, 2008-2010, RM40,500

UMRG, 2010-2013, RM60,000

Collaborators

Prof Peter Thomasson, Jodrell Bank Observatory, Manchester, United Kingdom

Prof Michael Kramer, Max-Planck Institute for Radio Astronomy, Bonn, Germany

DrBusaba Kramer, National Astronomical Research Institute of Thailand, Chiang Mai, Thailand

Mohd Fairos Assilam, AgensiAngkasa Negara, MOSTI

Project Leader

Dr Zamri Zainal

[email protected]

Members

Prof, Dr, Zainol Abidin Ibrahim(Physics Dept., UM)

Assoc Prof. Abdul Halim Abdul Aziz (USM)

Assoc. Prof. Maliki (UiTM)

Norsiah Hashim (Pusat Asasi Sains, UM)

Ungku Ferwani Salwa bt. Ungku Ibrahim

(Pusat Asasi Sains,UM)

Zety Shahrizat Hamidi (UiTM)

Radio Cosmology Research Group


Research direction

Kinetic theories for systems with long-range interactions remain a great challenge in the understanding of their dynamical evolutions and transport properties. Many different approaches have been proposed such as the Boltzmann equation, Landau equation, Fokker-Planck equation, Langevin equation, etc. Generalization of these fundamental equations using the framework of fractional calculus and their applications to particles, charge, energy or heat transport in dusty plasmas, disordered materials, granular systems and complex fluids hold great prospects.

Research Areas

Brownian motion -classical, quantum, relativistic

Kinetic theory of dusty plasma

Nonlinear wave phenomena in complex plasmas

Transport theories for disordered materials

Statistical mechanics of non-equilibrium processes.

Fractional dynamics in complex systems


A number of generalizations of Brownian motion (a Gaussian Markov process) to non-Markovian fractional Brownian motion using fractional calculus have been proposed. Applications of these non-Markovian processes include anomalous diffusion and stochastic field theory with long-range correlation. Recently, some novel results related to fractional Langevin equation have been obtained for dusty plasma. Other notable works include theoretical predictions of classical and quantum solitons/shocks in conventional plasmas, quantum plasmas and dusty plasmas. Complex plasma is used a system for studying novel types of non-equilibrium processes, phase transitions and organized structure formations.

Project Leader

Prof. Dr. Sithi V. Muniandy

Plasma Technology Research Centre


Tel: 603-79674292

Fax: 603-79674146

[email protected]

Collaborators

Prof. C.S. Wong (UM)

Prof. P. Chatterjee (India)

Prof. P.W. Smith (Oxford)

Prof. S.C. Lim (S'pore)

DIFFUSION EQ. ⇐ BOLTZMANN EQ. ⇐ SCHRODINGER EQ.

(Scaling Limit of Random Walk)(Quantum kinetic limit)

Statistical Mechanics of Complex Plasmas


Research Area

Theoretical nuclear astrophysics

Stellar astrophysics

Nuclear reaction and nuclear reaction of heavy ions

Theoretical condensed matter

Current Hot Findings:

The artist’s impression shows the relative sizes of young stars, from the smallest “red dwarfs”, weighing in at about 0.1 solar masses, through low mass “yellow dwarfs”such as the Sun, to massive “blue dwarf” stars weighing eight times more than the Sun, as well as the 300 solar mass star named R136a1.—credit to ESO/M. Kornmesser.

Source in media:

http://eso.org/public/news/eso1030/

http://blogs.nature.com/news/thegreatbeyond/2010/07/most_massive_star_ever.html

Crowther, Pail A.; Schnurr, Olivier; Hirschi, Raphael; Yusof, Norhasliza; Parker, Richard J.; Goodwin, Simon P.; Kassim, Hasan Abu. 2010. The R136 star cluster hosts several stars whose individual masses greatly exceed the accepted 150 Msolar stellar mass limit. MNRAS (2010) DOI: 10.1111/j.1365-2966.2010.17167.x (ISI-Cited Publication)

Theoretical Physics Laboratory Leader

Hassan Abu Kassim


University Malaya,

50603 Kuala Lumpur

Tel : 603-79674097 Fax : 603-79674146

[email protected]

From left; Raphael Hirschi, Norhasliza Yusof & Hasan Abu Kassim(Stellar evolution team that sees

the star from the computers)

Members

Prof. Keshav N. Shrivastava

Dr. Abdurahim Okhunov

Dr. Muhammad Zamrun F. (Research Fellow)

Collaborator:

Dr. Raphael Hirschi (Keele University, UK)


Project Leader

Mayeen Uddin Khandaker

(Assosciate Professor)


Tel: 0133172880

[email protected]

Research Direction

Nuclear medicine is a growing field in recent time, and the radionuclides are playing a crucial role in this field since no other effective medicine is still discovered for some complex diseases. Nowadays, production of medical radionuclides by cyclotron is emerging as an alternative and efficient route. Production of medical radionuclides by using nuclear reactors through (n,γ) process is limited to the high specific activity and carrier free formation but the use of cyclotron is free from these difficulties. We, therefore, are determining the optimum production parameters of medical and industrial radionuclides using the medium energy cyclotron by measurement of excitation functions and yields. In the last two decades, the rapid installations of hospital based cyclotrons all over the world were driven by the advent of single photon emission computed tomography (SPECT) and positron emission tomography (PET) imaging techniques.

Research Areas

Charged Particle Activation Analysis

Production of PET, SPECT imaging radionuclides

Production of therapeutic radionuclides

Nuclear Data Evaluation

Neutron Activation Analysis

Gamma-ray Spectrometry


Excitation functions and yield measurements of the p+natNi, p+natPd, p+natCd, p+natZr, p+natSn, p+natZn, p+natW, p+natMo nuclear processes by using MC-50 cyclotron at the Korea Institute of Radiological and Medical Sciences (KIRAMS) for investigating;

the proton-induced production routes of the medical radionuclides, such as 55,57Co, 57Ni, 105Rh, 109,111,114mIn, 104Ag, 86,87Y, 89Zr, 117mSn, 67Ga, 61,62,64Cu, 186Re, 99Mo/99mTc and 94m,93gTc used in diagnostic and therapeutic purposes.

the long-lived industrial radionuclides, such as 56,57Co, 105,106Ag, 183,184Re, 92,95Nb, 88Zr, 88Y, 120,122,124Sb, and 95mTc used for corrosion, erosion and wear behavior of metals through thin layer activation (TLA) analysis.

other radionuclides, such as 120,122,124,125Sb, 62,65,69mZn etc. for various applications: studies of environmental contamination or food crops, toxic trace element in soils, pollution in industrial environments, nuclear waste management and so on.

Members & Collaborators

Assoc. Prof. Dr. Hasan bin Abu Kassim,


University of Malaya.

Prof. Dr. Guinyun Kim


Kyungpook National University, South Korea.

Dr. Naohiko Otsuka,

International Atomic Energy Agency,

Vienna, Austria.

Experimental Nuclear and Radiation Physics


Project Leader

Prof. Dr. Wan Haliza Abd. Majid


Tel:03-79674088

[email protected]

Collaborator

Prof. Dr. Takeo Furukawa

Kobayashi Institute of Physical Research, Japan.

Members

Gan Wee Chen, Tamil Selvi Velayutham, Nadia Mahmoudikhatir, Ali Khorsand Zak, Nor Azura, Nor Khairiah, Mohd Arif, Ng Boon Ki, Rehana Razali, Siti Hajar

Research Direction

The primary goal of the research is to prepare, characterize and fabricate electronic devices such as organic light emitting diodes (OLED), photo-sensors, pyroelectric sensors and passivators by using composite thin films and nanostructures. These composite thin films and nanostructures can be formed from polymeric materials, biological materials and and inorganic compounds. Previously we have focused our research on basic and well-established polymeric materials and inorganic compounds to form composite thin films in order to ascertain our basic research approach, methodology, techniques and evaluation are in line with that reported by other researchers in the world. For instance, we have experienced in preparing, characterizing and fabricating composite thin film of polyvinylidene fluoride (PVDF) and TiO2 which shows enhanced pyroelectric coefficient. Now we are ready to experiment with much more exciting and complex composite thin films and nanostructures such as composite thin film of polyurethane with ZnO nanoparticles. We are also investigating the effect of poling field and composite content on the pyroelectric activity of the polymer composite. It is also one of our primary interests to study the dependence of the pyroelectric activity on dielectric property, structural property (crystallite and grain sizes) and device parameter (such as thickness of the polymer film and effective electrode area) of polymer composites.

Research Topics

Ferroelectric, piezolectric and pyroelectric and dielectric properties of composite thin films and nanostructures (glycolipid, polyvinylide fluoride (PVDF), polyurethane(PU), PZT, TiO2, ZnO)

Synthesis and preparation of ZnO nanostructures for piezoelectric application and as a transparent thin film conductor.

Anomalous current-voltage characteristic in small molecule organic light emitting diode (SM-OLED)

Study of lanthanide quinolinates complexes and derivatives: the influence of the ternary ligand on the spectroscopics, band gap and electrical analysis.

ZnO Nanoparticles SEM images of (a) sample PVDF/TiO2 composite thin film annealed at 60 oC, (b annealed at 140 oC and (c)

an amplified picture of (b).

Composite Thin Films and Nanostructures

mailto:[email protected]


Research direction

Ionics is a key technology for storing, converting and using energy efficiently as well as protecting the environment. There has been much progress over the years in the understanding and development of materials required for ionic devices. Our research fields focus on polymer electrolytes for lithium ion batteries, proton batteries, supercapacitors, fuel cells, solar cells and electrochromic windows applications.

Research Areas

Studies on natural and synthesized materials for possible applications as polymer electrolytes

Engineer the polymer electrolytes for optimum enhanced conductivity

Propose mechanism for ionic transport in such materials

Characterization of ionic conductors

Modeling of transport mechanism and fractal geometry

Fabrication and characterization of devices

Derive from plant resources and develop new materials for coating applications

Develop a new system for separation for nano-material substances in term of analytical science

Synthesis of new polymeric materials

Equipments

Our equipments include Dynamic Mechanical Analysis (DMA), Fourier Transform Infrared Spectroscopy (FTIR), Electrochemical Impedance Spectroscopy (EIS), Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TGA), Electrochemical Analyzer, Thermal Laminating Machine, Sealing Machine, Ultra Sonic Welder, Electrode Cutting Machine and others.

Centre for Ionics University of Malaya (C.I.U.M)

Packaging Battery Coin cell Fuel cell

Group Leader

Prof. Dr. Abdul Kariem Mohd Arof

Members

AP Dr. Ramesh T. Subramaniam, Dr. Ramesh Kasi, Dr. Siti Rohana Majid, Dr. Zul Hazrin Zainal Abidin, Prof. Dr. Rosiyah Yahya (Chemistry), Dr. Siti Aishah Hashim Ali (Chemistry), Roslina Ahmad (Mechanical Engineering), Norita Mohd Zain (Mechanical Engineering)


Activities

CIUM activities include organize workshops, publish papers, monographs and books related to ionic conductors and their applications. CIUM has established links with Max-Planck Institute for Polymer Research at Mainz, Germany and Centre for Electrochemical Research Institute at Karaikudi, India and foster collaboration.

Collaborations & Linkages

National:

Faculty of Applied Science, UiTM.

International:

Professor Dr Suresh Chandra, Emeritus Scientist, Physics Dept, Banaras Hindu University, Varanasi, India.

Dr Amita Chandra, Reader, University of Delhi, India.

Professor Dr Agnieszka Pawlicka. Chemistry Dept, University of Sao Paulo, Brazil.

Professor Dr. M.A. Careem. Physics Department, University of Paradeniya, Sri Lanka.

Centre for Ionics University of Malaya (C.I.U.M)

Dynamic Mechanical Thermogravimetric

Differential Scanning Thermal Laminating Machine


Research Center Direction

Low dimensional systems refer to materials with a structure that extend to less than three dimensions. Their lattice structures can resemble sheets, needles, thin films or dots in nanometer range. Low Dimensional Material Research Center is Malaysia leading dynamic research center focuses on organic, inorganic, carbon-based, metal oxide, gallium nitride and bio-materials. The research ranges from fundamental study of material properties to potential applications and commercialization.

Research spans from exciting properties of grapheme, nanotube, metal oxides and nanowire to green technology such as organic photovoltaic, light emitting diode and biomaterials.

Equipments

Low Dimensional Materials Research center is well equipped with state of the art scientific instrumentation and processing in 10K and 1K clean environment.

State of the art equipment includes organic electronic processing glovebox, mask aligner photolithography, Langmuir Blodgett deposition system, Auger Electron Spectroscopy, Micro Raman spectroscopy and many more.

Low Dimensional Materials Research Center

1K clean room 10K clean room

Mask Aligner Photolithography Lagmuir Blodgett deposition system

Members

Prof. Dr. Wan Haliza Abd Majid, Dr. Khaulah Sulaiman, AP Dr. Siti Meriam Abdul Ghani, Dr. Vengadesh Periasamy, Dr. Zarina Aspanut, Dr. Woon Kai Lin, Dr. Huang Nay Ming, Dr. Ahmad Suhaimi Abu Bakar, Prof. Dr. Muhamad Rasat Muhamad (MMU)

Leader

Prof. Dr. Saadah A. Rahman


Every PhD and Master students are allowed to use the state of art equipment after sufficient training and supervision. We make sure students have the necessary skills to tackle the research problems.

Teaching and Learning

Low dimensional Materials Research Center focuses on cultivating the next generation of scientists and providing added value to the students. We occasionally organize training to new research students such as LabView, data analysis and equipment training. We encourage the best students to join us and to grow with us to be a world leading research center.


Plasma Enhanced Chemical Vapour

Deposition System

Auger Electron Spectroscopy

KLA Tensor Profiler Polaron Absorption set-up

Current-voltage characterization system Organic electronic processing glovebox


Selected Recent Projects

Development of organic solar cells based on low molecular weight semi-conducting materials

Optimization of dual-radio frequency plasma enhanced chemical vapour deposition for the studies of nanostructured carbon nitride thin film

Charge carrier dynamics for TiO2/Graphene Nanocomposites

Charged induced polaron absorption in electrically pumped organic light emitting diode for potential laser source

Reconstituted of Photosynthetic Bio-materials (PBMs) into “Artificial membranes” and its spectroscopic and photoelectric studies

Silicon and Silicon Carbide Nanowires prepared by Plasma Assisted Hot-Wire Chemical apour Deposition

Study of relaxation phenomena, ferroelectric and pyroelectric activities in thin film composites


Equipment Training Supervisor examining students’ work

High-magnification of a single ZnO/ZnInO heterostructure nanowire Luminescent semiconducting polymer


Introduction

Photonics research made its debut in the University of Malaya with the construction of the University's very first laser in 1979. By 1995, under the guidance of Prof Dr. Harith Ahmad, the laboratory ventured outward, further expanding the research activities of the Photonics Laboratory to encompass not only lasers but also fiber optic devices and planar waveguide circuits.

Fiber Optics Laboratory

Ultraviolet Laser Laboratory

Planar Waveguide Circuit Laboratory

Mission and Vision

With the current drive towards a knowledge-based economy, the Photonics Laboratory of the University of Malaya is set to become a cornerstone for the development of the field of photonics in Malaysia, providing the expertise and training that is vital in achieving Malaysia's goal of becoming a developed nation.

Facilities

Photonic Research Center

Flame hydrolysis Deposition

Vacuum Furnace DC Sputtering Cr Deposition

UV Mask Aligner Plasma Dry Etcher Glass Deposition Process

Group Leader

Prof. Dr. Harith Ahmad

Photonic Research Centre


Tel: 603-7967 7133/4282

[email protected]


Academic Achievement

Since 1995, the laboratory has strived to be an academic and research center of excellence for the development of photonics in Malaysia. The laboratory has successfully produced over 30 post-graduate scholars as well as over 300 hundred publications in international referred journals and conference proceedings and has also acquired 10 patents for fiber optic devices.

Research Accomplishment and Findings of the Photonics Group

This laboratory has initiated various projects that cater for not only fundamental research and improving student education at tertiary level but also the development of devices and techniques for industrial and scientific applications. The Laser Research Laboratory in our group covers extensive areas such as;

The virtually non-existence field of solid-state laser was initiated and laser systems such the high power Nd: YAG was designed and fabricated.

Q-switching and mode-locking techniques were investigated and the pulse generated via these techniques was used to study laser shadowgraphy.

Nonlinear optics such as 2nd, 3rd and 4th harmonic generation.

Optical parametric oscillator

Tunable solid state lasers such as Titanium: Sapphire laser system

Technology of femtosecond lasers.

In 1993, the Laser Research Laboratory extended its area of studies and specialisation to Photonics, whereby Optical Fibre Technology research was pursued. A specific and improved facility for fibre research was acquired mostly through IRPA funding under the Seventh Malaysia Plan. This in a way has attracted the R&D division of Telekom Malaysia to establish joint research program. The initial activity was to develop erbium-doped fibre amplifiers for use by Telekom Malaysia. Further expansion was taken by Telekom Malaysia to establish a fully funded Telekom Malaysia Laboratory that covers the following activities:

Fabrication of Fused Couplers

C-band Erbium-Doped Fibre Amplifier

L-band Erbium-Doped Fibre Amplifier

Fabrication of Fibre Bragg Gratings

Development of Optical Fibre Preform Facility

Packaging of Optical Component

Optical Test-bed

The development of the above activities provide a comprehensive listing of components that was developed based on photonics technology that laid foundation for further grants, such as those form MOSTI. Currently the photonics laboratory undertake two national projects on photonics namely

National Top-Down Photonics –involving product development as well as system. The participating institutes and their activities are listed as below:

SIRIM : sol-gel materials

UM : new designs of optical amplifiers, optoelectronics

UKM : waveguide based devices

UTM : polymer based optical switch

UPM : system test-bed

The overall allocated fund is around RM 23.5 million and is supported by MOSTI with clear objectives and deliverables. This project provides capability building and also cooperation between various universities and research institutions.



Development of Planar Waveguide Devices – funded by MOSTE with a budget of RM 16.85 Million, this was approved in December 2001. The participating universities are UM, USM, UiTM and MMU with objectives towards the fabrication of silica on silicon-based devices (UM) and GaAs based semiconductor optical amplifier (USM). UiTM and MMU undertake material and optical characterizations as well as testing.

These two national projects would provide the framework in launching Malaysia towards the development of photonics products that will set paced for photonics industry in this country.

Optical circuits



The Plasma Technology Research Centre's research activities focus on the investigation of the Physics and technology of plasma devices including:-

A. Plasma focus

Ion beam characterization

Ion beam crystallization of a-Si-H

Small plasma focus as EUV source

Material detection by neutron activation using plasma focus neutrons

Electron beam characterization and applications

B. Vacuum spark/Pulsed capillary discharge

Characterization and applications of vacuum spark as X-ray/EUV source

Characterization of pulsed capillary discharge as EUV source

Design and calibration of EUV detection systems

C. Dielectric barrier discharge

Discharge characterization and modeling

Ozonizer for Ozone/UV treatment of biomaterials

Discharge-based chemical synthesizer for exhaust gas treatment

D. DC/AC/RF glow discharge for material processing

Surface treatment of biomaterials

Gas discharge modeling using PDP code

Modeling of RF ICP

Glow discharge processing of materials

E. Exploding wire for nano-particles syntheses

Characterization of wire explosion discharge

Nano-particles syntheses and characterization

Numerical modeling of nano particles formation

Mechanism during exploding wire discharge

E. Dusty plasma

Characterization of dusty plasma system

Theoretical studies of wave phenomena in dusty plasma

Optical diagnostics of dusty plasma

Statistical mechanics of complex plasmas

Plasma Technology Research Center

Group Leader

Prof. Dr. Wong Chiow San

Plasma Technology Research Centre


Tel: 603-79674385

Fax: 603-79674146

[email protected]


Prof. Dr. S.V. Muniandy

Prof. Dr. K. Ratnavelu

Prof. Datin Dr. Saadah A.R.

Prof. Dr. Yusoff M.A.

Dr. S.L. Yap

Dr. O.H. Chin

Dr. Roslan M.N.

Dr. N.M. Huang

Prof. S.N. Gan (Chemistry,UM)

Prof. V.C. Chong (ISB,UM)

Dr. P. Chatterjee (India)

Dr. R. Mongkolnavin (Thailand)

Dr. S.Damrongsakkul (Thailand)

Dr. D. Subedi (Nepal)

Dr. P. Choi (France)

Dr. P.W. Smith (UK)


Leader

Prof. Dr. Keshav N. Shrivastava


Tel: 603-79677140

[email protected]

Dr. Bijan Nikouravan

(Theoretical Astrophysics

and General Relativity)

Research direction

Quantum Mechanics as applied to various problems in physics

Applications of Quantum Mechanics to Nuclear Reactions

Solar neutrinos

Nuclear Energy levels

Density Functional Theory

Raman Frequencies

Band Structure in Solids

Quantum Hall effect

Superconductivity.

Research Areas

Mass of a star

Neutrino mass

Magnetoresistance

Semiconductors

Raman in glasses

Quantum Hall

Fractional charges

Theory of Large Hadron Collider results.


We have found the hierarchy of fractional charges. The plateau-plateau phase transitions are explained. The interpretation of wave function which fractionalizes the charge has been found. The band structure of several systems has been calculated. The Raman spectra of new clusters of atoms have been identified.

Quantum Science Center

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