1. Department of Materials Science and Engineering, National Chung Hsing University, 145 Xingda Rd., South Dist., Taichung City 402202, Taiwan
2. Department of Applied Materials and Optoelectronic Engineering, National Chi Nan University, 1 University Road, Puli Township, Nantou County 545301, Taiwan
3. Department of Chemical Engineering, Feng Chia University, No. 100, Wenhua Rd. Xitun Dist., Taichung City 407102, Taiwan