1. Department of Physics
2. Banaras Hindu University
3. Varanasi-221005
4. India
5. National Sun Yat-sen University
6. Kaohsiung-80424
7. Taiwan
8. CSIR-National Physical Laboratory
9. New Delhi-110012
10. Mahila Mahavidyalaya
11. Indian Institute of Technology (Banaras Hindu University)