1. National Center for High-Performance Computing
2. Taichung 40763
3. Taiwan
4. Department of Physics
5. National Chung Hsing University
6. Taichung 40227
7. Institute of Nanoscience
8. Materials & Electro-Optics Research Division
9. Chung-Shan Institute of Science and Technology
10. Taoyuan 325
11. Hsinchu 30076