Affiliation: | a Novel Functional Materials and Device Lab, Department of Physics, Hanyang University, Seoul 133-791, Republic of Korea b Samsung Advanced Institute of Technology, P.O. Box 111 Suwon 440-600, Republic of Korea c WONIL Image Maker, INC., No 212 2089 Jeongwang-Dong, Siheung, 429-450, Republic of Korea |