Dresden University of Technology (TU Dresden), University of Regensburg

Professor of Chemistry, Purdue University

Professor, University of Science and Technology of China

Postdoctoral Researcher, Columbia University

Columbia University

Scientist, US Navy

Postdoctoral Scholar, Physics Dept. Oregon State University

Southern University of Science and Technology (SUSTech)

The Institute for Solid State Physics, The University of Tokyo

Former postdoctoral fellow at Caltech