1. Department of Physics
2. National Taiwan University
3. Taipei 106, Taiwan
4. Nano Science and Technology Program
5. Taiwan International Graduate Program
6. National Tsing Hua University
7. Hsinchu 30013, Taiwan
8. Institute of Physics
9. Academia Sinica
10. Taipei 11529, Taiwan
11. Graduate Institute of Applied Physics
12. National Chengchi University