1. Department of Physics, Panimalar Engineering College, Chennai, India
2. PG and Research Department of Physics, Thiru.Vi.Ka Govt Arts College, Thiruvarur, India
3. Department of Physics, Arignar Anna Govt.Arts College, Cheyyar, India
4. Department of Physics, Puratchi Thalaivar Dr M.G.R Govt Arts and Science College, Uthiramerur, India
5. Department of Physics, Vel Tech High Tech Dr. Rangarajan Dr. Sakunthala Engineering College (Autonomous), Chennai, India