1. Key Laboratory for Micro-Nano Physics and Technology of Hunan Province
2. State Key Laboratory of Chemo/Biosensing and Chemometrics
3. College of Materials Science and Engineering
4. Hunan University
5. Changsha
6. School of Physics and Electronics
7. P. R. China
8. Department of Chemistry and Biochemistry
9. University of California
10. Los Angeles
11. USA