1. College of Information Science and Engineering; Ocean University of China; Qingdao 266100 China
2. State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 China
3. Institute for Computational Sciences and Engineering, Laboratory of New Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory and College of Physics, College of Chemistry; Qingdao University; Qingdao 266071 People's Republic of China