1. Department of Physics, Periyar Arts College, Cuddalore, Tamil Nadu, India
2. Department of Physics, Arignar Anna Government Arts College, Villupuram, Tamil Nadu, India
3. Department of Physics, Krishnasamy College of Engineering and Technology, Cuddalore, Tamil Nadu, India
4. P. G & Research Department of Physics, A M Jain College, Chennai, Tamil Nadu, India
5. UNESCO-UNISA Africa Chair in Nanoscience’s/Nanotechnology Laboratories (U2AC2N), College of Graduate Studies, University of South Africa (UNISA), Pretoria, South Africa
6. Nanosciences African Network (NANO-AFNET), Materials Research Department (MRD), iThemba LABS-National Research Foundation (NRF), Somerset West, Western Cape Province, South Africa
7. Department of Science and Technology (DST), New Delhi, India
8. Department of Electronics & Comm. Engineering, Biju Patnaik University of Technology, Rourkela, Odisha, India
9. Department of Physics, TUCAS, Thennangur, Thiruvalluvar University, Vellore, Tamil Nadu, India