Research Highlights (AY2013 - 2014)

Visualising Interstellar's black hole

If you have watched the movie Interstellar, you would have seen the images of light around the black hole Gargantua. One effect present is the "shell of fire", which refers to light rays going around a rotating black hole in a spherical orbit. Such orbits were in fact first studied in detail by Assoc. Prof. Edward Teo. A description of this effect and how it was used to produce images of Gargantua can be found in Kip Thorne's book.


Interconversion between three overstretched DNA structures

A new publication by A/Prof Yan Jie and his team reports systematic studies of interconversion between these overstretched DNA structures induced by changing NaCl concentration at constant force.


Advanced Material Interfaces 06/14

The collaboration work between Dr. Ariando, Prof. Venkatesan and Prof. Feng on the physics which explains the role of oxygen vacancy and polar catastrophe on the origin of the 2D electron gas at the complex oxide interfaces is highlighted on the cover of Advanced Material Interfaces.


The Rise of Spintronics in CVD Graphene

A group of scientists at the Graphene Research Center led by Prof. Oezyilmaz have now discovered that the spin Hall effect is intrinsic to graphene synthesized on metallic surfaces by means of chemical vapour deposition.


NUS researchers discover a new mechanism for magnetoresistance in disordered two-dimensional materials

A collaboration between researchers at Monash University (Australia), the University of Maryland (USA) and Shaffique Adam's research group at the National University of Singapore has resulted in the theoretical prediction and experimental observation of a new mechanism by which an applied magnetic field can increase the resistance in disordered graphene and other two-dimensional materials. This work appears in the latest issue of Physical Review Letters, and was designated as an Editors' Suggestion (an honor awarded to the top 15 percent of Letters published in this prestigious journal).


very Electron Counts!

Using unique research facilities at free-electron laser FLASH at DESY (Germany) and Singapore Synchrotron Light Source of National University of Singapore, a team consisting of researchers from National University of Singapore (NUSNNI-Nanocore, Singapore Synchrotron Light Source, and Department of Physics), Germany (Center for Free Electron Laser, DESY, and University of Hamburg), USA (University of Illinois at Urbana-Champaign and Advanced Photon Source), Japan (University of Tokyo and AIST), reveals electronic correlations and screening mechanisms of effective Coulomb on-site repulsions in a model high-temperature superconductor cuprate, spin-ladder compound.


Probing the physical principles of mechanosensing by cells

This research is led by Associate Prof Yan Jie and principal investigator at MBI, NUS, and Prof Rene Mege, principal investigator at the Institut Jacques Monod (IJM), University Paris Diderot & CNRS, in collaboration with colleagues from NUS and IJM.


Going nano with new 2D materials centre

The University has established the Centre for Advanced 2D Materials to study and develop applications for materials that are atomically thin with a S$50-million grant from the National Research Foundation (NRF). The Centre builds on the success of the Graphene Research Centre (GRC), which will have its activities folded into the new Centre.


New research shows unlimited heat conduction in graphene

It was reported that scientists at NUS and the Max Planck Institute for Polymer Research in Mainz have attested that the thermal conductivity of graphene diverges with the size of the samples. This discovery challenges the fundamental laws of heat conduction for extended materials. Their research and results have now been presented in the scientific journal Nature Communications.


Scientists open door to better solar cells, superconductors and hard-drives

The team of Asst/Prof Andrivo Rusydi from the National University of Singapore and Prof. Michael Rübhausen from the Hamburg Center for Free-Electron Laser Science (CFEL) have solved a long standing mystery in the physics of condensed matter. Using DESY's bright research light sources, they have opened a new door to better solar cells, novel superconductors and smaller hard-drives.


Materials: Directional conductivity when under strain Tensile strain induced directional conductivity in ultra-thin manganite films

A research collaboration between Asst Prof Andrivo Rusydi and collaborators from Nanyang Technological University and Chinese Academy of Sciences, China have discovered that La0.7Sr0.3MnO3 (LSMO) ultra-thin films exhibit the ability to conduct electricity in a certain direction when it is placed under tensile strain conditions at low temperatures.


Two pieces of good works just published in Physcial Review Letter

(a) Experimental work (with ECE colleagues J Thong and Cheng-Wei Qiu) on "thermal cloak" published in Physical Review Letters (3 Feb 2014). This paper, together with another one from NTU, has been selected as Viewpoint in Physics "Thermal Cloaks get hot" (b) A rigorous mathematical theory has been worked out on anomalous heat diffusion. It is rare in this field as it is difficult to get a rigorous theory. S. Liu, P Hanggi, N.-B Li, J. Ren, and B Li, Anomalous heat diffusion, Physical Review Letters 112, 040601, 28 Jan 2014.


Joint graphene research to boost data storage

Faster, smaller and more durable data storage for laptops, smart phones and tablet PCs, with hard disk capacity in the region of tens of terabytes instead of the present gigabytes - these will be the potential results of a new joint venture between the Graphene Research Centre (GRC) at the NUS Faculty of Science and Fuji Electric (Malaysia) Sdn Bhd.


Cloak made of Telflon catch eyes in web

A research team, from Zhejiang University in China, the Royal Institute of Technology in Sweden and National University of Singapore (Prof C. K. Ong) have discovered an alternative way to make an invisibility cloak that departs from other attempts to do so.


Latest Nano Letters publication

Asst/Prof Adam Shaffique's publication "Direct Imaging of Charged Impurity Density in Common Graphene Substrates" was published in Nano Letters.


Unexpected Conductivity

Asst/Prof Adriando's research team work at NUS is today highlighted by Science Magazine as an Editor's choice. Interfacing two dissimilar crystals can lead to unexpected phenomena, as best illustrated by the formation of a highly mobile metallic two-dimensional electron gas (2DEG) between two insulators, SrTiO3 (STO) and LaAlO3.


A research breakthrough in Graphene Hybrid research

Organic Nano Device Laboratory (ONDL) has made a research breakthrough in Graphene Hybrid research that has been published in Nature Nanotechnology. They have created a first artificial graphite intercalation compound made by layer-by-layer stacking of graphene.


A new revolutionary way to tailor two dimensional sheet of electrons

A research collaboration between Prof. Ariando and Prof. Venky Venkatesan at NanoCore, National University of Singapore, and collaborators from Japan, Sweden, China and The Netherlands have discovered a new revolutionary way to tailor two dimensional sheet of electrons along specific crystallographic orientation at the interface of insulating oxide systems.


How Graphene and Friends Could Harness the Sun's Energy Hitting Walls

It was reported that a team of researchers from University of Manchester and Graphene Research Centre at NUS have discovered that combining wonder material graphene with other stunning one-atom thick materials could create the next generation of solar cells and optoelectronic devices.
Similar reports in PhysOrg, Nanowerk and Mancunian Matters.


Review paper published in highest-ranked journal (I.F.:40.197) "Chemical Reviews"

Dr. M.V. Reddy from Advanced Batteries lab published their Review paper on anode materials for Li-ion batteries. For the 1st time Asian University published Review paper in Chemical Reviews in the area of Lithium-ion batteries anodes.


Controllable unzipping for intramolecular junctions of graphene nanoribbons and single-walled carbon nanotubes

Graphene is often regarded as one of the most promising candidates for future nanoelectronics. As an indispensable component in graphene-based electronics, the formation of junctions with other materials not only provides utility functions and reliable connexions, but can also improve or alter the properties of pristine graphene, opening up possibilities for new applications.


Functionalized graphene converts charge currents into spin currents

A research team led by Asst Prof Barbaros Özyilmaz from the Department of Physics and theGraphene Research Center at the National University of Singapore took advantage of graphene's unique mechanical properties to artificially increase the intrinsic spin-orbit coupling of graphene.


NUS researchers revealed three distinct structural reorganizations of DNA

In a series of recent studies led by Jie Yan (Associate Professor of Department of Physics, Principal Investigator of Mechanobiology Institute (MBI), Centre of Bio-imaging Sciences (CBIS), and Singapore-MIT Alliance for Research and Technology (SMART)) has demonstrated that all the three transitions exist, and which ones occur depends on experimental conditions.


Secure communication technology can conquer lack of trust

It was reported that Professor Christian Kurtsiefer and Assistant Professor Stephanie Wehner of the Centre for Quantum Technologies at NUS have used the quantum properties of light to perform the world's first demonstration of a 'secure bit commitment' technology. The demonstration is a proof-of-principle that points towards a possible quantum technology for secure communication in the future. Similar reports were carried in: Phys Org & Science Newsline.


NUS scientists make a significant breakthrough in plastic solar cells

In a report carried by Nature Communications last week (doi: 10.1038/ncomms2211: (http://www.nature.com/ncomms/journal/v3/n12/full/ncomms2211.html), a team of scientists from the Departments of Physics and Chemistry of NUS, together with the Cavendish Laboratory, University of Cambridge, announced a breakthrough in the morphology control and performance of plastic solar cells. Part of the work was also carried out at the Solar Energy Research Institute of Singapore (SERIS), owned by NUS.


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