Academic Profile : No longer with NTU

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Prof Xiong Qihua
Visiting Professor
Dr. Qihua Xiong is currently Nanyang Assistant Professor at Nanyang Technological University. He holds a joint appointment between School of Physical and Mathematical Sciences and School of Electrical and Electronic Engineering. Prior to joining NTU, he worked as a postdoctoral research fellow in the laboratory of Professor Charles Lieber at Harvard University.

Dr. Xiong finished his B.S. degree in Physics at Wuhan University in 1997. After obtained his M.S. diploma in physics from Shanghai Institute of Applied Physics, Chinese Academy of Sciences (CAS) in 2000, he went to United States of American with a scholarship support to pursue his Ph.D. research. In 2006, he received his Ph.D. degree in materials science at The Pennsylvania State University under the supervision of Professor Peter Eklund. His thesis research work focuses on fundamental physical properties especially on phonon properties of semiconductor nanowires. During his postdoctoral training, he has extended his research to include high performance nanoelectronic devices based on one-dimensional electron gas in nanowire heterostructures and nanoelectronic devices for single molecule biosensing.

Dr. Xiong received several awards and fellowships during his graduate and undergraduate studies, including Pan-American Advanced Studies Institute (PASI) fellowship (DOE and NSF, 2006), Graduate Award for Academic Excellence (The Pennsylvania State University, 2006), Excellent Graduate Fellowship Award (1998 and 1999, CAS), Hui Kai Fellowship Award (Wuhan University, 1996), Gui Zhiting-Xu Hailan Fellowship Award (Wuhan University, 1995) and Outstanding Student Award (Wuhan University, 1994). He won 2nd round Singapore National Research Foundation Research Fellowship in 2009 and chose NTU as the host institute to carry out his research.
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 Explore the applications of nanomaterials in nanoelectronics, nanophotonics, energy harvesting

Build nanoelectronic-bio interfaces, e.g., nanopore field effect transistor for biosensing
  • Networks of Bose-Einstein Condensates in Exciton-Polariton Lattices
US 2016/0109167 A1: Laser Cooling Of Organic-Inorganic Lead Halide Perovskites (2019)
Abstract: The invention relates generally to cooling matter using laser emission, and in particular, to cooling perovskite materials using laser emission.

US 2016/0131585 A1: Metamaterial Device And Uses Thereof (2019)
Abstract: The present invention relates to a logic gate, comprising a metamaterial surface enhanced Raman scattering (MetaSERS) sensor, comprising (a) alphabetical metamaterials in the form of split ring resonators operating in the wavelength range of from 560 to 2200 nm; and (b) a guanine (G) and thymine (T)-rich oligonucleotide that can, upon presence of potassium cations (K+), fold into a G-quadruplex structure, and in presence of Hg2+, form a T-Hg2+-T hairpin complex that inhibits or disrupts the G-quadruplex structure formed in presence of K+, as well as methods of operating and using such a logic gate.

US 2016/0018335 A1: Monolayer Of Nanorods On A Substrate And Method Of Forming The Same (2018)
Abstract: Provided is a method of forming a monolayer of nanorods on a substrate, wherein the nanorods are at least substantially vertically aligned, the method including providing a droplet of a solution including the nanorods on a substrate, and controlling the temperature and the evaporation of the solution such that the internal region of the droplet is kept at near equilibrium status to allow formation of the monolayer of nanorods. Also provided is a monolayer of nanorods on the substrate thus obtained. Also provided is an optical arrangement and use of the optical arrangement.

US 2014/0193301 A1: Method Of Generating A Metamaterial, And A Metamaterial Generated Thereof (2017)
Abstract: A method of generating a metamater-operable in the visible-infrared range is provided. The method comprises a) depositing a layer of a conductive material on a substrate; b) forming a layer of electron beam resist on the layer of conductive material; c) patterning the layer of electron beam resist using electron beam lithography to form a patterned substrate; d) depositing a layer of a noble metal on the patterned substrate; and e) removing the resist. A metamaterial operable in the visible-infrared range comprising split-ring resonators having a least line width of about 20 nm to about 40 nm on a substrate is provided. A transparent photonic device or a sensor for chemical or biological sensing comprising the metamaterial is also provided.

US 2013/0336348 A1: Semiconductor Optical Cryocooler (2017)
Abstract: There is provided a laser cooling apparatus including: a laser for providing an emission; a silicon-on-insulator substrate; and a thin film microstructure thermally anchored to the silicon-on-insulator substrate, the thin film microstructure being made from a material selected from either a II-VI binary compound semiconductor or a II-VI tenary compound semiconductor.