1. Colloid Chemistry Laboratory, Department of Chemistry, The University of Burdwan, Golapbag, Burdwan 713104 West Bengal, India
2. Department of Physics, Indian Institute of Technology Patna, Bihar 801106, India
3. Department of Microbiology, University of Kalyani, Kalyani 741235, India
4. Department of Chemistry, Kazi Nazrul University, Asansol 713303 West Bengal, India
5. Department of Chemistry, Guru Ghasidas Vishwavidyalaya, Bilaspur 495009 Chhattisgarh, India
6. University Science Instrumentation Centre, The University of Burdwan, Golapbag, Burdwan 713104 West Bengal, India