1. Department of Physics
2. Sri Ramakrishna Engineering College
3. Coimbatore 641022
4. India
5. Department of Chemistry
6. Periyar University
7. Salem 636011
8. Manonmaniam Sundaranar University
9. Tirunelveli 627012
10. Surface and Nanoscience Division
11. Material Science Group
12. Indira Gandhi Centre for Atomic Research
13. Kalpakkam