1. Department of Chemical System Engineering
2. Graduate School of Engineering
3. The University of Tokyo
4. Tokyo 113-8656
5. Japan
6. Department of Materials Science and Engineering
7. Ibaraki University
8. Hitachi
9. Department of Chemistry and Chemical Engineering
10. Yamagata University
11. Yonezawa
12. The Electron Microscopy Center
13. Tohoku University
14. Sendai
15. Japan Synchrotron Radiation Research Institute
16. Sayo-gun