1. Laboratory of Solid State Microstructures & Innovation Center of Advanced Microstructures
2. Nanjing University
3. Nanjing 210093
4. China
5. Department of Physics and TcSUH
6. University of Houston
7. Houston
8. USA
9. Department of Applied Physics
10. Hong Kong Polytechnic University
11. Institute for Advanced Materials
12. South China Normal University
13. Guangzhou 510006
14. Key Laboratory of Modern Acoustics (MOE)
15. Department of Physics
16. Collaborative Innovation Center of Advanced Microstructure