1. Colloid Chemistry Laboratory, Department of Chemistry, The University of Burdwan, Golapbag, Burdwan 713104, West Bengal, India
2. Department of Physics, Jadavpur University, Jadavpur, Kolkata 700032, India
3. Department of Chemistry, School of Sciences, Kalyani Regional Centre, Netaji Subhas Open University, West Bengal, India
4. Department of Chemistry, KaziNazrul University, Asansol 713303, West Bengal, India
5. Department of Physics, Indian Institute of Technology Patna, Bihar 801106, India