1. Department of Physics, National Taiwan University, Taipei 106, Taiwan
2. Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 115, Taiwan
3. Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
4. Nanoscience and Nanotechnology Program, Taiwan International Graduate Program, Institute of Physics, Academia Sinica, Taipei 106, Taiwan
5. Department of Engineering and System Science, National Tsing Hua University, Hsinchu 300, Taiwan
6. Department of Chemistry, Chung Yuan Christian University, Chungli District, Taoyuan City 32023, Taiwan
7. Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 300, Taiwan
8. Division of Mechanics, Research Center for Applied Sciences, Academia Sinica, Nangang, Taipei 115, Taiwan
9. Advanced Research Centre for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan