1. Department of Engineering and System Science, National Tsing Hua University, Hsinchu 300, Taiwan
2. Nano-Science and Technology Program, Taiwan International Graduate Program, Academia Sinica, Taipei 115, Taiwan
3. Department of Physics, National Taiwan University, Taipei 106, Taiwan
4. J Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague 8, Czechia
5. Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
6. Research Center for Applied Sciences, Academia Sinica, Taipei 115, Taiwan
7. Institute of Physics, Academia Sinica, Taipei 115, Taiwan
8. Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
9. Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 106, Taiwan