1. Department of Physics and Sungkyunkwan Advanced Institute of Nanotechnology (SAINT)
2. Sungkyunkwan University
3. Suwon 440-746
4. Korea
5. Sensor System Research Center
6. Korea Institute of Science and Technology (KIST)
7. Seoul 136-791
8. School of Mechanical Engineering
9. Department of Physics
10. Sri Venkateswara University
11. Tirupati 517502
12. India
13. Yonsei University
14. Seoul 120-749