1. Institute of Applied Mechanics, National Taiwan University, Taipei, Taiwan
2. Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, USA
3. School of Electrical and Computer Engineering, Cornell University, Ithaca, New York 14853, USA
4. Research & Development, Taiwan Semiconductor Manufacturing Company, Hsinchu, Taiwan
5. Department of Electronics, University of Valladolid, Valladolid, Spain
6. DSG Technologies, Inc., San Jose, California 95131, USA
7. Department of Physics, National Central University, Jungli, Taiwan
8. International College of Semiconductor Technology, National Yang Ming Chiao Tung University, Hsinchu, Taiwan