YU TingPhD, National University of Singapore (2003)
My current research mainly focuses on synthesis and characterization of low-dimensional materials and hybrid nanostructured materials, and their potential applications in optoelectronics, photodetectors, light emitting diodes, and energy storage.
The current research topics in my group include:
Graphene and other two-dimensional (2D) materials: From graphene, the Nobel Prize Winner material, to monolayer or few layer transition metal chalcogenides (TMDs) and now black phosphorus, 2D materials become the hottest material in the past decade and nowadays not only for the fundamental physics in low dimensions, but also for the great potential applications in post-silicon microelectronics, light emitting diodes, gas sensors, photodetectors, flexible displays and electronics, spintronic devices, optoelectronics, valleytronics, and so on, owing to their exceptional properties. We are interested in large-area growth, characterization and fundamental studies of 2D materials and development of electronic devices for applications in chemical/biological sensor, optoelectronics, photodetectors, flexible electronics, and light emitting diodes.
Energy storage: With the rapid depletion of fossil fuels and the growing environmental deterioration caused by fossil-fuel consumption, a massive effort has been advocated to seek renewable and clean energy sources that can replace fossil fuels to enable the sustainable development of our economy and society. However, the Inherent property of intermittent of many renewable and clean energy sources like wind, water, solar, tide, prevents these renewable and clean energy sources from really substituting of fossil fuels. Therefore, energy storage, which is an intermediate step to compensate their intermittent characteristics, has attracted worldwide attention and increasing research interest. Among the various energy storage systems, lithium-ion battery and super-capacitor, as two major devices of electrochemical energy storage, have been considered as the most successful and prospective technologies with advantages of high efficiency, versatility, and flexibility. They play very important roles in our daily lives as dominant power sources for portable electronic devices and have great potential applications in electric vehicles, hybrid electrical vehicles, and large scale power and energy management. We synthesize nanocarbon – metal oxide nanostructures hybrid systems with controlled morphologies and patterns for sustainable energy.
Nanowire FETs for nanoelectronics, nano-chemical sensors and nano-biological sensors.
C. X. Cong, and Ting Yu*, “Enhanced ultra-low-frequency interlayer shear modes in folded graphene layers”, Nature Communications, 2014, 5, 4709.
J. Jiang, J. H. Zhu, W. Ai, Z. X. Fan, X.N. Shen, C. J. Zou, J. P. Liu, H. Zhang and Ting Yu*, “Evolution of disposable bamboo chopsticks into uniform carbon fibers: a smart strategy to fabricate sustainable anodes for Li-ion batteries”, Energy & Environmental Science, 2014, 7, 2670.
W. Ai, Z. M. Luo, J. Jiang, J. H. Zhu, Z. Z. Du, Z. X. Fan, L. H. Xie, H. Zhang, W. Huang*, and Ting Yu*, “Nitrogen and Sulfur Codoped Graphene Multifunctional Electrode Materials for High-Performance Li-Ion Batteries and Oxygen Reduction Reaction”, Advanced Materials, 2014, 26, 6186.
J. Z. Shang, X. N. Shen, C. X. Cong, N. Peimyoo, B. C. Cao, M. Eginligil, and Ting Yu*, “Observation of Excitonic Fine Structure in a 2D Transition-Metal Dichalcogenide Semiconductor”, ACS Nano, 2015, 9, 647.
C. X. Cong, J. Z. Shang, X. Wu, B. C. Cao, N. Peimyoo, C. Y. Qiu, L. T. Sun, and Ting Yu*, “Synthesis and Optical Properties of Large-Area Single-Crystalline 2D Semiconductor WS2 Monolayer from Chemical Vapor Deposition”, Advanced Optical Materials, 2014, 2, 131.
Y. Q. Dong, H. C. Pang, H. B. Yang, C. X. Guo, J. W. Shao, Y. W. Chi, C. M. Li, and Ting Yu*, "Carbon-Based Dots Co-doped with Nitrogen and Sulfur for High Quantum Yield and Excitation-Independent Emission", Angewandte Chemie International Edition, 2013, 52, 7800.
C. Y. Qiu, X. N. Shen, B. C. Cao, C. X. Cong, R. Saito, J. J. Yu, M. S. Dresselhaus, and Ting Yu*, "Strong magnetophonon resonance induced triple G-mode splitting in graphene on graphite probed by micromagneto Raman spectroscopy", Physical Review B, 2013, 88, 165407.