1. Energy Conversion Engineering Lab
2. Institute of Regional Innovation (IRI)
3. Hirosaki University
4. Japan
5. Graduate School of Science and Technology
6. Department of Nanoscience
7. Sojo University
8. Kumamoto 860-0082
9. Department of Chemical Engineering
10. Taiyuan University of Technology
11. Taiyuan 030024
12. China
13. Institute Technology Bandung
14. Bandung 40132
15. Indonesia
16. Hirosaki 036-8560