1. P.G. and Research Department of Physics, H.H. The Rajah’s College (A), Pudukkottai, India
2. P.G. Department of Physics, Dr. Kalaignar Government Arts College, Kulithalai, India
3. Department of Science and Humanities, M.I.E.T. Engineering College, Tiruchirappalli, India
4. P.G. and Research Department of Physics, V.H.N.S.N. College, Virudhunagar, India