1. Graduate School of Engineering, Kobe University, 1-1, Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
2. Department of Chemistry, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi, Pathumthani 12110, Thailand
3. Medical Device Fabrication Engineering Center, Graduate School of Engineering, Kobe University, Kobe, Japan