1. Department of Physics, University College of Engineering, Bharathidasan Institute of Technology (BIT) Campus, Anna University, Tiruchirappalli, India
2. Department of Physics, Mookambigai College of Engineering, Pudukkottai, India
3. Department of Physics, Thirumalai Engineering College, Kilambi, India
4. Department of Physics, RajeswariVedachalam Government Arts College, Chengalpet, India