1. Department of Physics; New Horizon College of Engineering; Bengluru Karnataka India
2. Department of Physics; M. S. Ramaiah Institute of Technology; Bengluru Karnataka India
3. Department of Chemistry; R.V. College of Engineering; Bengluru Karnataka India
4. Department of Physics; JSS Science RSH PU College; Vidyagiri Dharwad Karnataka India
5. Department of Physics; Karnatak University; Dharwad Karnataka India