1. IT Nano Electrical Device Laboratory, Department of Electrical and Electronic Engineering, Yonsei University, Seoul, Republic of Korea
2. ZeSHTech Co., Ltd., Business Incubator, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
3. Department of Electronic, Seoil University, Seoul, Republic of Korea
4. Department of Physics, Hongik University, Seoul, Republic of Korea