National Research Foundation (NRF) Investigator
(65) 6513 8495


B.Sc. (Wuhan); M.Sc. (CAS); Ph.D. (Penn State); Postdoc (Harvard)

Research Area: Optical Spectroscopy and Nanoscale Physics
Research Interests
My group focuses on a range of topics broadly defined in nanoscience and nanotechnology

• Develop novel approaches to synthesize and fabricate tunable low-dimensional metallic and semiconducting nanomaterials, heterostructures, and artificial nanostructures.

• Investigate their fundamental properties as an outcome of confined geometry and anisotropy, especially by using optical spectroscopy and electrical transport measurement.

• Explore the applications of nanomaterials and artificial nanostructures in nanoelectronics, nanophotonics, energy harvesting, and defense technology.

• Build nano-bio interfaces, such as nanopore, field-effect transistors and photonic/plasmonic nanostructures for biosensing.

Selected Publications
Xu, X.; Peng, B.; Li, D.; Zhang, J.; Wong, L. M.; Zhang, Q.; Wang, S.; Xiong, Qihua . Flexible Visible-Infrared Metamaterials and Their Applications in Highly Sensitive Chemical and Biological Sensing, Nano Lett. 11, 3232-3238 (2011). (highlighted by Nature Asia Materials and Nanowerk.com).
Utama, M. I. B.; Peng, Z. P.; Chen, R.; Peng, B.; Xu, X.; Dong, Y.; Wong, L. M.; Wang, S.; Sun, H. D.; Xiong, Qihua. Vertically Aligned Cadmium Chalcogenide Nanowire Arrays on Muscovite Mica: A Demonstration of Epitaxial Growth Strategy, Nano Lett. 11, 3051-3057 (2011). (cover story, August 2011).
Zhang, J.; Peng, Z.; Soni, A.; Zhao, Y.; Xiong, Y.; Peng, B.; Wang, J. B.; Dresselhaus, M. S.; Xiong, Qihua. Raman Spectroscopy of Few-Quintuple Layer Topological Insulator Bi2Se3 Nanoplatelets, Nano Lett. 11, 2407–2414 (2011).
Xu, X.; Zhao, Y.; Sie, E. J.; Lu, Y.; Liu, B.; Ekahana, S. A.; Ju, X.; Jiang, Q.; Wang, J. B.; Sun, H. D.; Sum,T. C.; Huan, C. H. A.;Feng, Y. P.; Xiong, Qihua. Dynamics of Bound Exciton Complexes in CdS Nanobelts, ACS Nano. 5, 3660–3669 (2011).
Chen, R.; Utama, M. I. B.; Peng, Z.; Peng, B.; Xiong, Qihua; Sun, H. D. Excitonic Properties and Near-Infrared Coherent Random Lasing in Vertically Aligned CdSe Nanowires, Adv. Mater. 23, 1404-1408 (2011).