1. Key Laboratory of Optoelectronic Technology & Systems Ministry of Education
2. International R & D center of Micro-nano Systems and New Materials Technology
3. Chongqing University
4. Chongqing 400044
5. China
6. College of Aerospace Engineering
7. CAS Center for Excellence in Nanoscience
8. Beijing Institute of Nanoenergy and Nanosystems
9. Chinese Academy of Sciences
10. Beijing