1. Department of Applied Chemistry, Sri Venkateswara College of Engineering, Sriperumbudur, India
2. Department of Physics, Arignar Anna Govt. Arts College, Cheyyar, India
3. Department of Physics, Puratchi Thalaivar Dr. M. G. R. Govt. Arts and Science College, Uthiramerur, India
4. Department of Physics, Islamiah College Autonomous, Vaniyambadi, India
5. Department of Chemistry, College of Science, King Khalid University, Abha, Saudi Arabia