报告题目: Second harmonic generation: a symmetry probe for 2D materials

报告摘要: Atomically thin two dimensional materials such as graphene, transition metal dichalcogenide and chromium trihalide monolayers have recently spurred a great of interests due to their unique mechanic, electronic, optical and magnetic properties. And often these properties could be greatly tuned by external stimuli such as electric, magnetic and force field. Individual member in this class of 2D materials is also characteristic in term of different symmetries. Moreover, the symmetries could also be tuned, depending on how monolayers are stacked on one another. These variations in symmetry have given rise to even richer properties among different 2D materials and their homo-/hetero-structures. Therefore, they provide a new playground for nonlinear optics, namely second harmonic generation, because of its sensitivity to symmetries. Vice versa, second harmonic generation becomes a powerful technique to study 2D materials. In this talk, I will present some of our recent results on 2D materials.

报告人简介：Dr Shiwei Wu is currently Xie Xide Chair Professor of Physics and the director of Key Laboratory of Micro and Nano Photonic Structures (MOE) at Fudan University. His research focuses on the optical microscopy and spectroscopy of low-dimensional materials, with the effort of developing the novel experimental methods to solve cutting-edge problems in condensed matter physics. He obtained his bachelor degree from Fudan University in 2001 and his PhD degree from University of California, Irvine in 2007. Before joining the department of physics at Fudan in 2011, he worked in the Molecular Foundry of Lawrence Berkeley National Laboratory as a postdoc fellow.

主持联系人：胡小永(电话：62768705)

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