1. Department of Physics, Manonmaniam Sundaranar University, Tirunelveli-627 012, India
2. Department of Physics, School of Engineering & Technology, Dhanalakshmi Srinivasan University, Trichy – 621 112, Tamil Nadu, India
3. CISL, Department of Physics, Annamalai University, Annamalai Nagar – 608 002, Tamil Nadu, India
4. Department of Electrical Engineering, Pusan National University, 2, Busandaehak-ro 36 beon-gil, Geumjeong-gu, 46241, Republic of Korea
5. Department of Physics, Central University of Tamil Nadu, Thiruvarur – 610 005, India