1. Department of Physics, Arumugam Pillai Seethai Ammal College, Tiruppattur, India
2. Department of Physics, Sree Sevugan Annamalai College, Devakottai, India
3. PG and Research Department of Physics, Arul Anandar College, Karumathur, India
4. Jayaraj Annapackiam College for Women, Periyakulam, India
5. Millimeter-Wave Innovation Technology Research Center (MINT), Dongguk University, Seoul, Republic of Korea