1. Department of Physics
2. Dr Harisingh Gour Central University
3. Sagar
4. India
5. Indian Institute of Technology (BHU)
6. Varanasi
7. CSIR-National Institute for Interdisciplinary Science and Technology
8. Trivandrum-695 019
9. Institute of Physics
10. Bhubaneswar
11. Nano-Materials Laboratory
12. School of Engineering and Physical Sciences
13. Heriot Watt University
14. Edinburgh EH14 4AS
15. UK