学术报告（7月16日10:00-11:00）

主持人：董建文 教授

欢迎广大师生前来参与！

报告摘要：

Due to the very large surface to bulk ratio, two-dimensional (2D) materials has a greatly enhanced response to stimulus from the environment.  This presentation will focus on our recent progress in quantum transport measurement of 2D mesoscopic devices in controlled environment.  By encapsulation of the 2D materials, we ensure high quality and stability of our devices for conventional transport measurements, which revealed rich physics and a variety of potential applications for 2D materials. By in-situ manipulation of sample surface during a single experimental run, we can continuously tune the interactions of the 2D electronic systems and observe the resultant changes in their electronic states. As an example, magneto-transport experiment with in-situ cobalt adsorption and hydrogenation of graphene will be discussed, and the stark contrast of the electronics states between metal decorated graphene and covalently modified graphene is demonstrated.

报告人简介：

Dr. Jian-Hao Chen obtained his undergraduate degree in Zhejiang University. He obtained his PhD in Physics under the supervision of Prof. Ellen Williams at University of Maryland at College Park in 2009. Thereafter, he worked as a Research Fellow in the nanoelectronics group of Prof. Michael Fuhrer at University of Maryland and in Prof. Alex Zettl’s group at University of California at Berkeley. Since March 2013, he joined Peking University as an Associate Professor and Principle Investigator of the Laboratory for Nanoelectronics and in-situ Quantum Transport. His present research is focused on studying the physics and applications of low-dimensional electronic materials and its nanostructures, manipulation of material properties at the atomic scale, and in-situ quantum electrical transport in ultra-high vacuum environment.  He has published in Nature Physics, Nature Nanotechnology, Physical Review Letters, with a total SCI citation of more than 5000.