1. Department of Electrical Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul, 05006, Republic of Korea
2. Hur Advanced Research, 96 Dongtanbanseok-ro, Hwaseong-si, Gyeonggi-do 18456, Republic of Korea
3. Process Development Team, Semiconductor R&D Center, Samsung Electronics Co., Ltd., San 16 Banwol-Dong, Hwaseong-City, Gyeonggi-Do 447-701, Korea