Zhenhua NiSoutheast University, China
Dr. NI Zhenhua received his Bachelor’s degree in Physics and a second Bachelor’s degree in Applied Electrical Techniques from Shanghai Jiaotong University in 2003, Ph.D. degree in Physics from National University of Singapore (NUS) in 2007, and did his postdoctoral research in Department of Physics and Applied Physics at Nanyang Technological University (NTU) from 2007-2010. In 2009, he received the British Council “Researcher exchange programme Award” and worked as an academic visitor in Andre Geim’s research group in the University of Manchester. He has been a Professor in Physics Department at Southeast University since May, 2010. His current research interests include optical and optoelectronic properties of graphene and other two dimensional materials. He has published more than 100 papers on peer-reviewed journals, including Nature Photonics, Nature Communications, Nano Letters, PRL, ACS Nano, and receiving over 6000 citations with H-index of 36. He is currently the Editorial Board Member of international peer-review journals “Scientific Reports”, and “Frontiers in Condensed Matter Physics”.
Title:Optical spectroscopic characterization of two dimensional materials
SymposiumAdvanced Testing Technology for Graphene
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Abstract
Optical spectroscopy, including Raman, photoluminescence (PL), reflection/absorption spectroscopy, have been widely used in the characterization of two dimensional materials. In this talk, we use Raman and contrast spectroscopy to investigate the properties of graphene, e.g. layer number, defect, and interlayer interactions. We also study the optical properties of two dimensional transition metal dichalcogenides (TMDs, e.g. MoS2) by using PL spectroscopy.