Kumari Mamta obtained her Ph.D. degree from Ranchi University in 2011. Currently, she is an Associate Professor of Physics in the Department of Applied Science and Humanities, Nalanda College of Engineering, Nalanda, India. She has 21 years of teaching experience in engineering colleges at undergraduate and postgraduate levels, and 18 years of research experience. Her research interest lies in the field of radiating structures using numerical methods, computations, and virtual lab simulations. Dr. Mamta has been an Erasmus Mundus India4EUII Post-Doctoral fellow funded by the European Commission with the Department of Electromagnetic Engineering at Politecnico di Torino, Italy, in 2014.

Raj Kumar Singh has obtained a Ph.D. degree in Physics from Ranchi University, Ranchi. He has 18 years of teaching experience at undergraduate and postgraduate levels. His research interests are in the field of microstrip patch radiating structures for mm wave communications, spintronics, and high-entropy perovskite. Dr. Singh has been an Erasmus Mundus Post-Doctoral fellow at Politecnico di Torino, Italy, funded by the European Commission, in 2013-2014. He is a fellow of the Institution of Electronics and Telecommunication Engineers, India, a Member of IEEE, and a life member of the Indian Science Congress Association, Kolkata, Indian Association of Physics Teachers, Kanpur, and Indian Physics Association, Mumbai.