Koh Tae-Wook, Choi Jung-Min, Lee Sunghun, Yoo Seunghyup
Department of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701 Rep. of Korea.
Adv Mater. 2010 Apr 22;22(16):1849-53. doi: 10.1002/adma.200903375.