1. Department of Physics, Faculty of Science and Technology, ICFAI Foundation for Higher Education (IFHE), Hyderabad, Telangana, India
2. Department of Physics & SOE, University of Petroleum and Energy Studies, Bidholi Village, Via-Premnagar, Dehradun, Uttarakhand, India
3. Research and Development Centre, Vardhaman College of Engineering, Hyderabad, Telangana, India