Affiliation: | 1.School of Electrical, Electronic & Control Engineering,Changwon National University,Changwon-si,South Korea;2.Department of Electrical and Electronic Engineering, IT Nano electronic device Laboratory,Yonsei University,Seoul,South Korea;3.National Center for Nanoprocess and Equipment, Korea Institute of Industrial Technology,Gwangju,South Korea;4.Department of Physics,Hongik University,Seoul,South Korea |