1. Nanobio Device Laboratory; School of Electrical and Electronic Engineering; Yonsei University; 50 Yonsei-ro Seodaemun-Gu, Seoul 120-749 Republic of Korea
2. Department of Chemical Engineering; Stanford University; Stanford CA 94305 USA
3. Biological Cybernetics, Laboratory; School of Electrical and Electronic Engineering; Yonsei University; 50 Yonsei-ro Seodaemun-gu, Seoul 120-749 Republic of Korea
4. MicroMechanics, Laboratory; School of Mechanical Engineering; Yonsei University; 50 Yonsei-ro Seodaemun-gu, Seoul 120-749 Republic of Korea