1. School of Optical and Electronic Information
2. Huazhong University of Science and Technology
3. Wuhan City
4. P. R. China
5. Department of Chemistry and Biochemistry
6. University of Maryland
7. College Park
8. USA
9. School of Physics, Communication and Electronics
10. Engineering Research Centre for Functional Ceramics
11. Institute of Acoustics
12. Chinese Academy of Sciences
13. Beijing 100190