1. Department of Physics
2. Faculty of Science University of Malaya
3. 50603 Kuala Lumpur
4. Malaysia
5. Interdisciplinary Research Centre in Biomedical Materials (IRCBM)
6. COMSATS Institute of Information Technology
7. 54000 Lahore
8. Pakistan
9. University of the Punjab
10. Quaid-e-Azam Campus
11. 54590 Lahore