报告人：寇良志
        School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty,

        Queensland University of Technology
时  间：2017年12月21日    14:30
地  点：知新楼C座C1011室
邀请人：马衍东 教授

报告摘要:
From first principles calculations, we found the recent synthesized boron sheet is the stable Dirac layered materials after surface hydrogenation with high Fermi velocity, and outstanding mechanical properties. More interesting, the sheet simultaneously exhibit the phenomena of negative Poisson ratio, ferroelasticity and Dirac switch, therefore rendering borophane promising in future nanodevice application.
We also suggested that topological insulators are another family of Dirac materials due to the helical metallic edge states. With the feasible approaches, we turn graphene into strong topological insulators with large nontrivial band gaps, and demonstrated the presence of metallic edge states with 1D Dirac cones.

报告人简介:
Lecturer, ARC DECRA fellow in QUT, Alexander von Humboldt research fellow, at University of Bremen in Bremen Center of Computational Materials Science (BCCMS), and Visiting scholar, in the University of Nevada, Las Vegas (UNLV). He obtained his PhD in 2011 at Institute of NanoScience (INS), Nanjing University of Aeronautics and Astronautics, and Postdoctoral Fellow at UNSW, Australia. His research interests is topological insulators, 2D and 1D layered materials, semiconductor surface and nanostructures, ab initio simulations , and he has been an invited reviewer for leading journals in many fields.