Time: 14:00-15:30, Monday, August 7th, 2023

Host:  Dr. Changxi Zheng, Pl of School of Science

Venue: E10-211, Yungu Campus, Westlake University

Professor Wen-Xin Tang

The Materials Science and Engineering 

Chongqing University

Speaker: 

Wen-Xin Tang, Professor of Chongqing University, acting as research director of Electron Microscopy Center and director of Laboratory for ultrafast Transient facility (LUTF).

Abstract:

In this presentation, I will provide an overview of the progress in developing the first aberration-corrected Spin Polarized Low Energy Electron Microscope (AC-SPLEEM) and share a few examples of its potential applications. Additionally, I will discuss the results obtained from ultrafast imaging techniques, including fs-LEEM and ps-SPLEEM. Lastly, I will present recent research on dynamic topological domain walls driven by lithium intercalation in graphene [1]. We report that lithium intercalation in a topologically structured graphene/buffer system on SiC (0001) induces dynamic topological domain wall (TDW) motions associated with stacking order changes, utilizing an in situ aberration-corrected LEEM.

[1] Endo, Y., Yan, X., Li, M. et al. Dynamic topological domain walls driven by lithium intercalation in graphene. Nat. Nanotechnol. (2023). https://doi.org/10.1038/s41565-023-01463-7

Contact:

liuyukun@westlake.edu.cn