1. Department of Materials Science and Engineering, Hanbat National University, Daejeon 34158, Republic of Korea
2. Departments of Electrical Engineering, Convergence IT Engineering, and Mechanical Engineering, School of Interdisciplinary Bioscience and Bioengineering, Medical Device Innovation Center, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
3. Safety Measurement Institute, Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea