Upendra Kumar, PhD has been an assistant professor in the Department of Applied Science at the Indian Institute of Information Technology, Allahabad, Uttar Pradesh, India since 2021. His research has been published in prestigious international Science Citation Index physics and materials science publications and he has received numerous awards in the field. He has also made an impact by attending numerous scientific conferences, seminars, and workshops and serving on a number of national committees and professional bodies and associations. Piyush K. Sonkar, PhD is an assistant professor in the Department of Chemistry, Banaras Hindu University, Varanasi-India. His research interests include nanomaterials, nanocomposites, fuel cells, electrochemical devices, supercapacitors, bio-sensors, chemical sensors, and new materials. He has published more than 38 international and national research papers in various reputed journals.