1. Sungkyunkwan Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon 440-746, Republic of Korea
2. Department of Molecular Cell Biology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon 440-746, Republic of Korea
3. School of Mechanical Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea
4. BIO-FD&C & Co., Smart Valley A-510, Songdomirae-ro 30, Yeongsu-gu, Incheon, Republic of Korea
5. Department of Physics, Sungkyunkwan University, Suwon 440-746, Republic of Korea
6. Department of Chemical Engineering, Myongji University, Yongin 449-728, Republic of Korea