1. Department of Chemical and Materials Engineering, National Central University, Taoyuan 320, Taiwan
2. Graduate Institute of Nanomedicine and Medical Engineering, Taipei Medical University, Taipei 110, Taiwan
3. Helios Bioelectronics Inc., Hsinchu 302, Taiwan
4. Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 110, Taiwan
5. Graduate Institute of Environmental Engineering, National Central University, Taoyuan 320, Taiwan