1. Department of Engineering and System Science; National Tsing Hua University; Hsinchu 30013 Taiwan
2. Nanoscience and Technology Program; Taiwan International Graduate Program; Academia Sinica; Taipei 115 Taiwan
3. Institute of Atomic and Molecular Sciences; Academia Sinica; Taipei 106 Taiwan
4. Department of Life Science; National Taiwan University; Taipei 106 Taiwan
5. Department of Chemistry; National Taiwan University; Taipei 106 Taiwan
6. Frontier Research Center on Fundamental and Applied Sciences of Matters; National Tsing Hua University; Hsinchu 30013 Taiwan
7. Research Center for Applied Sciences; Academia Sinica; Taipei 115 Taiwan