1. Department of Electrophysics, National Chia-Yi University, Chiayi, Taiwan 60004, China
2. College of Physics and Laboratory of Biological Polysaccharide Fiber Forming and Ecological Textile, State Key Laboratory, Qingdao University, Qingdao, Shandong 266071, China
3. Institute of Theoretical Chemistry, Jilin University, Changchun, Jilin 130021, China