1. School of Physics and Astronomy
2. University of Birmingham
3. Edgbaston
4. Birmingham
5. UK
6. School of Physics and Information Technology
7. Shaanxi Normal University
8. Xi’an 710119
9. China
10. Department of Physics
11. Tsinghua University
12. Beijing
13. Suzhou Institute of Nano-Tech and Nano-Bionics
14. SEID, Suzhou Industrial Park
15. Suzhou
16. College of Engineering
17. Swansea University
18. Bay Campus
19. Fabian Way
20. Swansea