Dr. Nikhil Ranjan Das is a Professor in the Department of Radio Physics and Electronics, University of Calcutta. He served as the Head of the Department, and the Dean of Engineering & Technology, and the Director of the Centre for Research in Nanoscience and Nanotechnology, the University of Calcutta.  He was a Postdoctoral Fellow and later a Postdoctoral Research Associate at McMaster University, Canada, from 1999 to 2002. He was a Senior Guest Scientist in Trieste (Italy), and Visiting Professor at McMaster University (Canada), the University of Sheffield (UK), and Pohang University of Science and Technology (POSTECH, South Korea). He was also a Visiting Scientist at the Technical University Dresden, Germany, in 2018 as a recipient of the INSA-DFG award. His research focuses on design, simulation, and optimization of optoelectronic and photonic devices, including semiconductor nanostructures. He has been a reviewer for several IEEE, IET, and other journals. He is a Fellow ofIETE and IE(I) and senior member of the IEEE. He was the founder and Chairman of the IEEE Photonics Society Calcutta Chapter, and has been the Branch Counselor of IEEE Calcutta University Student Branch. He completed international collaborative programs such as UKIERI with the University of Sheffield and was the key person from the University of Calcutta for Erasmus Mundus ‘LEADERS’ program. Dr. Santu Sarkar received his B.Sc. (Hons.) degree in Physics from the University of Calcutta, in 1995, and B.Tech., M.Tech., and Ph.D. degrees in Radio Physics and Electronics from the University of Calcutta, in 1998, 2000, and 2011, respectively. From 2000 to 2004, he was a Lecturer at Asansol Engineering College, University of Technology, West Bengal. From 2004 to 2016, he was an Associate Professor and Head of the Electronics and Communication Engineering Department, Academy of Technology. He is currently an Assistant Professor in the Department of Radio Physics and Electronics, University of Calcutta.