1. Department of Physics Education, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju, 61452, Korea
2. Department of Biomedical Engineering and Healthcare Industry Research Institute, College of Medicine, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea
3. Korea Electrotechnology Research Institute, Hanggaul-ro, Sangnok-gu, Ansan-si, Gyeonggi-do 15588, Korea