1. Department
of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu,
Daejeon, 305-701, Republic of Korea
2. LG Innotek Components & Materials R&D Center, 55 Hanyang Daehak-ro, Ansan-si, Gyeonggi-do, 426-791, Republic of Korea
3. Korea National NanoFab Center (NNFC), 291 Daehak-ro, Yuseong-gu, Daejeon, 305-701,
Republic of Korea