1. Centre for Nanotechnology, Indian Institute of Technology (IIT) Guwahati, Guwahati, Assam, India
2. Department of Electronics and Communication Engineering, Birla Institute of Technology, Mesra, Ranchi, Jharkhand, India
3. Department of Electronics and Electrical Engineering, Centre for Nanotechnology, the School of Health Science and Technology, Indian Institute of Technology (IIT) Guwahati, Guwahati, Assam, India