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物理学院“博约学术论坛”系列报告(第127期)

发布日期:2017年10月19日
题目:Optical Anisotropy of Two-dimensional (2D) Materials with Low Symmetry

报告人:童廉明副教授(北京大学化学与分子工程学院)

时间:2017年10月20日(周五)下午2:30

地点:新葡萄京娱乐场8455中心教学楼610

Abstract:The crystalline structure of two-dimensional (2D) materials determines their intrinsic properties. 2D materials with low symmetry, including monoclinic black phosphorous (BP) and triclinic Rhenium Disulphide (ReS2), exhibit distinct anisotropy. The electronic, mechanical and optical properties strongly depend on the crystalline orientation. The anisotropy not only offers a new dimension in addition to the rich fundamental physical properties of 2D materials, but also implies novel optical and electronic applications. We show the systematic investigations of the Raman scattering and polarized optical properties of 2D materials with low symmetry, such as BP and ReS2, including the development of rapid identification of crystalline orientation using angle-resolved Raman spectroscopy and polarized optical contrast imaging and spectroscopy, the anisotropic Raman enhancement, and the effect of optical birefringence in Raman scattering.

简历:童廉明,2002年毕业于北京大学,2007年在北京大学化学学院获得博士学位,先后为瑞典Chalmers University of Technology博士后,比利时Leuven大学访问学者,中科院物理所副研究员,现为北京大学化学与分子工程学院副教授。主要研究兴趣有:二维材料的拉曼和红外光谱,表面拉曼增强的定量分析与应用等。近年以主要作者在Nature、Nano Letters、JACS等重要期刊上发表学术论文十余篇。

联系方式:物理学院办公室(68913163)

邀请人:王荣瑶教授网址:/

  

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