1. Department of Physics, Himalayan university, Itanagar, Arunachal Pradesh, India
2. Department of Physics, SJB Institute of Technology, Kengeri, Bangalore, Karnataka, India
3. Department of Physics, The National Institute of Engineering, Mysore, Karnataka, India
4. Department of Physics, RV College of Engineering, Bangalore, Karnataka, India
5. Department of Chemistry, MS Ramaiah University of Applied Sciences, Bangalore, Karnataka, India