1. Institute of Biomedical Engineering, Department of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, 30010 Hsinchu, Taiwan
2. Department of Material Science, National Yang Ming Chiao Tung University, 30010 Hsinchu, Taiwan
3. College of Dentistry, National Yang Ming Chiao Tung University, 11221 Taipei, Taiwan
4. Institute of Traditional Medicine, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan
5. Biomedical Industry Ph.D. Program, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan