1. Key Lab of Microsystem and Microstructure of Ministry of Education
2. Harbin Institute of Technology
3. Harbin 150080
4. China
5. Department of Physics
6. Condensed Matter Science and Technology Institute
7. Faculty of Engineering & Environment
8. Northumbria University
9. Newcastle upon Tyne
10. UK
11. Key Laboratory of Organic Solids
12. Academy of Fundamental and Interdisciplinary Science