2004.7-Present Professor, Department of Integrated Micro/Nano System, School of Integrated Circuits
2001.8-2004.7 Visiting Scholar, EECS, University of California, Davis
2000.8-2001.8 Visiting Scholar, EECS, Cornell University
1997.7-2002.7 Associate Professor, MEMS Research Center, Institute of Microelectronics, Peking University