1. Department of Physics, Arignar Anna College (Arts & Science), Krishnagiri, India
2. Department of Physics, Science & Humanities, Faculty of Engineering, Karpagam Academy of Higher Education, Coimbatore, India
3. Department of Physics, Narayana Engineering College, Gudur, India
4. Department of Electronics and Communication Engineering, Centurion University of Technology and Management, Bhubaneswar, India
5. PG and Research Department of Physics, Paavendhar College of Arts & Science, Thalaivasal, Salem, India