1. Graduate School of
Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
2. Department of Fine and Applied Arts, Kurashiki University of Science and the Arts, Kurashiki,
Okayama, 712-8505, Japan
3. Research Institute for Production Development, Sakyo-ku, Kyoto 606-0805, Japan
4. JST, CREST, Okayama 700-8530, Japan