1. Department of Physics, SSM Institute of Engineering and Technology, Dindigul, India
2. PG and Research Department of Physics, N.M.S.S.V.N. College, Madurai, India
3. Department of Physics, Mannar Thirumalai Naicker College, Madurai, India
4. Department of Biotechnology, Alagappa University, Science Campus, Karaikudi, India