1. Key Lab of Advanced Transducers and Intelligent Control System
2. Ministry of Education and Shanxi Province
3. College of Physics and Optoelectronics
4. Taiyuan University of Technology
5. Taiyuan 030024
6. Material Science and Technology Division
7. Oak Ridge National Laboratory
8. Oak Ridge
9. USA
10. Key Laboratory of Interface Science and Engineering in Advanced Materials
11. Taiyuan
12. China
13. Department of Physics and Institute of Advanced Materials
14. Hong Kong Baptist University
15. Kowloon Tong
16. Hong Kong