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. Key Laboratory of Interface Science and Engineering in Advanced Materials
7. Taiyuan, 030024
8. China
9. Department of Physics
10. Hong Kong Baptist University
11. Kowloon Tong