1. Department of Materials Science and Engineering; National Chung Hsing University; 145, Xingda Rd Taichung 40227 Taiwan
2. Material and Chemical Research Laboratories; Industrial Technology Research Institute; 195, Sec. 4, Chung Hsing Rd, Chutung Hsinchu 31040 Taiwan
3. Instrument Center; National Chung Hsing University; 145, Xingda Rd Taichung 40227 Taiwan