Research Highlights (AY2017 - 2018)

Handling the oxygen migration at oxide heterostructures

A research team led by Prof ARIANDO from Department of Physics and Nanoscience and Nanotechnology Institute (NUSNNI) NanoCore have developed a methodology for tailoring the oxygen electromigration in buried interface of complex oxide materials and therefore realized the energy band reconstruction.

Probably the planet's fastest source of certified random numbers

CQT researchers and their collaborators have set a record for the fastest production of ‘certified’ random numbers. The work is described in a paper published 9 October in Physical Review Letters. "To the best of our knowledge, we have currently the fastest source of certified random numbers on the planet," says Christian Kurtsiefer, Principal Investigator at CQT, who led construction of the experiment.

Multibit optoelectronic memory

A team lead by Prof CHEN Wei from both the Department of Chemistry and the Department of Physics, NUS has developed a multibit, non-volatile optoelectronic memory device that is able to store up to 130 distinct states by using a tungsten diselenide/ boron nitride (WSe2/ BN) heterostructure.

High performance graphene-based catalysts

Using computational modelling and simulation techniques, Prof ZHANG Chun and his research team from both the Departments of Physics and Chemistry, NUS have developed a way of activating graphene by using defects in the underlying substrate.

An expressway for electrons in oxide heterostructures

A research team co-led by Prof Andrivo RUSYDI and Prof ARIANDO, both from the Department of Physics and Nanoscience and Nanotechnology Institute (NUSNNI) NanoCore, NUS has developed a new methodology involving a combination of advanced measurement techniques to determine the influence of localised charges on the mobility of electrons at the oxide interface.

Braiding may be key to using time crystals in quantum computing

Now in a new study, physicists Dr. Raditya Weda Bomantara and Professor Gong Jiangbin have theoretically demonstrated that different edge modes of a topological time crystal can be braided and that it is possible to exploit their approach to generate the states necessary for universal quantum computation.

Revolutionising atomic clocks

Associate Professor Murray Barrett who led the research at NUS have discovered that lutetium - a previously overlooked element - possesses properties ideal for making high performance atomic clocks.

Nano-ribbons from speeding nano-droplets

A team led by Prof Goki EDA from the Departments of Physics and Chemistry and the Centre for Advanced 2D Materials (CA2DM) at NUS has discovered a way to grow nano- and micro-ribbon structures of molybdenum disulphide that are only three atoms thick and on average hundreds of nanometers wide.

Quantum coherence induced correction to Thouless pumping

Thousands of years ago the Archimedes screw emerged as a superb design to pump water into irrigation ditches. It is believed to be of critical historical importance to the ancient world. On the physics side, in 1983 D.J. Thouless (Physics Nobel Laureate 2016) proposed an elegant quantum pump [1], which directly connects topological invariants with quantized matter transport. Thouless pump has opened up new applications of quantum physics and continues to influence fundamental research.

Energy level alignment for molecular electronics

NUS physicists have found that complex electron-electron interactions change the energy levels at molecule-metal interfaces, affecting the performance of molecular electronic devices.

Track-walking molecular motors

NUS physicists have developed new self-directed molecular motors for nanoscale applications.

Ultra-thin light emitting diodes

NUS scientists have developed energy efficient ultra-thin light-emitting diodes (LEDs) for next generation communication technologies.

New radiobiology beamline at CIBA

NUS physicists in collaboration with clinicians from the National Cancer Centre Singapore (NCCS) are developing a new beamline to advance proton therapy in cancer treatment.

Getting cross-Kerr with trapped ions

CQT researchers have exploited the vibrations of trapped ions to explore a phenomenon known from optics. The technique offers new tools for experiments in quantum thermodynamics and quantum computing.

More than meets the eye

NUS physicists have discovered that gold nanoparticles can enhance the light emission from tungsten disulphide (WS2) flakes and reveal minute changes in the material composition.

NUS scientists unravel new insights into promising semiconductor material

In two separate studies led by Professor Andrew Wee and Associate Professor Andrivo Rusydi from the Department of Physics at the NUS Faculty of Science, the researchers uncovered the role of oxygen in MoS2, and a novel technique to create multiple tunable, inverted optical band gaps in the material.

The synchronized dance of skyrmion spins

The Laser Brillouin group of Prof KUOK Meng Hau has simulated the dependence of the eigenmodes of skyrmions in ultrathin ferromagnetic films, on the Dzyaloshinskii-Moriya interaction and applied magnetic field. Special thanks to AIP, the work has been highlighted as an article in American Institute of Physics Publishing in the News, and as a press release in Newswise, entitled "The Synchronized Dance of Skyrmion Spins".

Steady-state density functional theory

Prof ZHANG Chun and his Ph.D. student, LIU Shuanglong together with research fellow, Dr Argo NURBAWONO, from the Department of Physics, NUS have developed a more general version of the popular and widely-used density functional theory (DFT) which can be applied to steady-state non-equilibrium situations. Prof Zhang Chun's work has received attention by

A new spin on graphene electronics

A collaboration between Prof Su Ying QUEK from the Department of Physics, NUS and Prof John THONG from the Department of Electrical and Computer Engineering, NUS has shown that "edge-contacted" device geometries in Ni/Co-graphene interfaces result in some of the lowest contact resistances reported to date.

NUS and BASF scientists open a way to high performance organic transistors for flexible electronics

NUS scientists in collaboration with BASF SE scientists have jointly developed a novel device structure for organic field-effect transistors (OFETs) that show unprecedentedly low contact resistance.

Next generation fast proton imaging and fabrication

NUS physicists, Prof Jeroen Anton VAN KAN and his collaborators have designed and successively micro-fabricated a miniature ion beam source prototype, paving the way to improve ion beam brightness by up to a million times.

Black holes with unusual horizons

NUS physicists, Prof Edward Teo and Dr Chen Yu have found a new type of black hole that can exist in anti-de Sitter space, whose event horizon is infinite in extent yet has a finite area.

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