1. National Center for High-Performance Computing, No. 28, Nan-Ke Third Road, Hsin-Shi, Tainan 744, Taiwan
2. Department of Mechanical and Electro-Mechanical Engineering, Center for Nanoscience and Nanotechnology, National Sun-Yat-Sen University, Kaohsiung 804, Taiwan
3. Department of Chemistry and Institute of Applied Chemistry, Chinese Culture University, Taipei 111, Taiwan
4. Department of Engineering Science, National Cheng-Kung University, Tainan 701, Taiwan