1. Department of Physics, Kalasalingam Academy of Research and Education Krishnankoil, 626126 Tamil Nadu, India
2. PG and Research Department of Physics, N.M.S.S.V.N. College Madurai, 625019 Tamil Nadu, India
3. Department of Biotechnology, Kalasalingam Academy of Research and Education Krishnankoil 626126 Tamil Nadu, India