1. Nano Science and Technology Program, Taiwan International Graduate Program, Academia Sinica, Taipei 11529, Taiwan
2. Department of Engineering and System Science, National Tsing Hua University, Hsinchu 30013, Taiwan
3. Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
4. Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan
5. Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
6. Genomics Research Center, Academia Sinica, Taipei 11529, Taiwan
7. Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan