1. Center for NanoBio Applied Technology and Department of Chemistry, Sungshin Women's University, 249-1 Dongsun-dong, Seongbuk-gu, Seoul 136-742, Republic of Korea, Department of Biomedical Engineering, College of Medicine and Institute of Medical and Biological Engineering, Medical Research Center, Seoul National University, 28 Yongon-dong, Chongno-gu, Seoul 110-744, Republic of Korea, and Department of Physics, Center for Nanotubes and Nanostructured Composites, Sungkyunkwan University, Suwon 440-746,...