Jing Xiangmeag, born in 1980. Currently, he is a Ph. D candidate in Institute of Micro/nano Science and Technology, Shanghai Jiaotong University. He received his B.S. and M.S. degrees from Harbin Institute of Technology in 2002 and 2004 respectively. His research interests include the design and fabrication of MEMS devices, IC testing and microelectronic packaging. To whom correspondence shoed be addressed. E-mail: dchen@sjtu.edu.cn