1. Department of Physics, Panimalar Engineering College, Chennai, Tamil Nadu, India
2. Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
3. Department of Natural Organic Compounds Chemistry, Institute of Chemistry and Chemical Technology, Siberian Federal University, Krasnoyarsk, Russia
4. Department of Physics, Arignar Anna Government Arts College, Cheyyar, Tamil Nadu, India
5. Department of Physics, Vel Tech High Tech Dr. Rangarajan Dr. Sakunthala Engineering, Chennai, Tamil Nadu, India