2003.10 - date: School of Integrated Circuits, Peking University, Professor
2001.10 - 2003.09: Institute of Microelectronics, Peking University, Postdoctoral
2000.11 - 2001.09: Department of Physics, Beihang University, Associate Professor
1999.09 - 2001.10: Department of Micro- and Nanotechnology, Technical University of Denmark, Visiting Scholar
1985.07 - 1999.08: Department of Physics, Beihang University, Lecturer, Assistant professor, Associate professor