1. School of Mechanical
and Aerospace Engineering, Seoul National University, Seoul, 151-742, Korea
2. Division of WCU
Multiscale Mechanical Design, School of Mechanical and Aerospace Engineering, Seoul National University
3. Macromolecular Science
and Engineering, University of Michigan, 2300 Hayward St., Ann Arbor, Michigan 48109-2136, United States
4. Materials Science
and Engineering, Chemical Engineering, Biomedical Engineering, University of Michigan
5. Institute of Advanced
Machinery and Design, School of Mechanical and Aerospace
Engineering, Seoul National University