1. Crystal Bank Research Institute
2. Pusan National University
3. Miryang 50463
4. Korea
5. Korea Research Institute of Standards and Science
6. Daejeon 34113
7. Dept. of Physics Education
8. Busan
9. Department of Nanoenergy Engineering
10. College of Nanoscience and Nanotechnology
11. Busan 46241
12. Republic of Korea
13. Dept. of Cogno-Mechatronics Engineering
14. Dept. of Optics and Mechatronics Engineering