1. Research and Development Centre, Bharathiar University, Coimbatore, India
2. Department of Physics, Thiruvalluvar College of Engineering and Technology, Vandavasi, India
3. Department of Physics, Arunai Engineering College, Tiruvannamalai, India
4. Department of Physics, Salem Sowdeswari College (Govt. Aided), Salem, India
5. Chemistry Divisions, School of Advanced Sciences, Vellore Institute of Technology Chennai Campus, VIT University, Chennai, India
6. Department of Physics, Aarupadai Veedu Institute of Technology, Vinayaka Mission’s Research Foundation, Chennai, India