1. School of Electrical and Electronic Engineering
2. Yonsei University
3. Seoul 03722
4. Republic of Korea
5. Department of Nano Mechanics
6. Nano Convergence and Manufacturing Systems Research Division
7. Korea Institute of Machinery & Materials (KIMM)
8. Daejeon 34103
9. Department of Mechanical Engineering and Science
10. Kyoto University
11. Kyoto 615-8540
12. Japan