1. Department of Materials Science and Engineering, Hongik University, Seoul 04066, South Korea
2. Department of Materials Science and Engineering, Korea University, Seoul 02841, South Korea
3. Smart City Program, Hongik University, Seoul 04066, South Korea
4. Department of Mechanical Engineering, Hongik University, Seoul 04066, South Korea
5. School of Electronic and Electrical Engineering, Hongik University, Seoul 04066, South Korea
6. SENTECHGMI Corp., Seoul 07548, South Korea