1. Department of Materials
Science and Engineering, National Chiao Tung University, 1001 Ta-Hsueh Road, Hsinchu, Taiwan 300, R.O.C.
2. Department of Materials Engineering, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan Dist. New Taipei City, Taiwan 243, R.O.C.
3. Department of Engineering
and System Science, National Tsing Hua University, Sec. 2, Kuang-Fu Road, Hsinchu, Taiwan 300, R.O.C.