Adv Mater 2011 Jun 26;23(24):2749-52. Epub 2011 Apr 26.
National Creative Research Initiative Center, for Integrated Optofluidic Systems, Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, 335 Gwahangno, Yuseong-gu, Daejeon, 305-701, Korea.