1. Department of Nanotechnology
2. Faculty of Advanced Technology and Multidiscipline
3. Universitas Airlangga
4. Surabaya 60115
5. Indonesia
6. Institute of Multidisciplinary Research for Advanced Material (IMRAM)
7. Tohoku University
8. Sendai
9. Japan
10. Department of Electrophysics
11. National Chiao Tung University
12. Hsinchu 30010
13. Taiwan