1. Department of Physics, St. Jude’s College, Thoothoor, Affiliated to Manonmaniam Sundaranar University, Tirunelveli, India
2. Department of Biology, Jazan University, Jizan, Saudi Arabia
3. Department of Physics, Jazan University, Jizan, Saudi Arabia
4. Department of Physics, Lekshmipuram College of Arts and Science, Neyyoor, India
5. Department of Physics, Sree Devi Kumari Women’s College, Kuzhithurai, India