1. Nagano Prefecture Nanshin Institute of Technology 8304‐190 Minamiminowa Nagano 399‐4511 Japan
2. Department of Materials Chemistry Faculty of Engineering Shinshu University 4‐17‐1 Wakasato Nagano 380‐8553 Japan
3. Research Initiative for Supra‐Materials Shinshu University 4‐17‐1 Wakasato Nagano 380‐8553 Japan
4. Research Center for Space System Innovation Tokyo University of Science 2641 Yamazaki Noda Chiba 278‐8510 Japan