1. Department of Physics
2. Kongunadu Arts and Science College
3. Coimbatore – 641 029
4. India
5. Faculty of Automatic Control and Computer Engineering
6. Gheorghe Asachi Technical University of Iasi
7. 700050 Iasi
8. Romania
9. Government College of Technology
10. Coimbatore – 641 013
11. Center for Nanomaterial & Energy Devices
12. Swami Ramanand Teerth Marathwada University
13. Nanded-431606
14. University Politehnica of Bucharest
15. 011061 Bucharest
16. Center of Micro-Photonics
17. Swinburne University of Technology
18. Australia
19. Sri Ramakrishna Mission Vidyalaya College of Arts and Science
20. Coimbatore 641 020