1. Department of Physics, National Changhua University of Education, No. 1 Jinde Road, Changhua 500207, Taiwan
2. Department of Chemical Engineering, i-Center for Advanced Science and Technology (iCAST), National Chung Hsing University, 145 Xingda Road, South District, Taichung 40227, Taiwan
3. Department of Photonics, National Cheng Kung University, No. 1 University Road, Tainan 70101, Taiwan