1. University of Calcutta, Department of Electronic Science, 92, Acharya Prafulla Chandra Road, Kolkata 700009, IndiabVidyasagar College, Department of Electronics, 39 Sankar Ghosh Lane, Kolkata 700006, IndiacBhawanipur Education Society College, Department
2. University of Calcutta, Department of Electronic Science, 92, Acharya Prafulla Chandra Road, Kolkata 700009, IndiadUniversity of Calcutta, Centre for Research in Nanoscience and Nanotechnology, JD-2 Salt Lake City, Kolkata 700098, India