"Vijay Kumar is presently working as Assistant Professor, Department of Physics, National Institute of Technology Srinagar (J&K), India. He received his Ph.D. in Physics at the beginning of 2013 from the SLIET Longowal. From 2013 to 2015, he was a postdoctoral research fellow in the Phosphor Research Group, Department of Physics, University of the Free State, South Africa. He has received the Young Scientist Award under the fast track scheme of the Department of Science and Technology (Ministry of Science and Technology, Government of India), New Delhi. He also worked in Grant-in-aid for the joint Center project titled ""Joint Center for generating tissue-engineered organs and controlling cell behavior"" under Indo-US Joint R&D Networked Center. He has been a nominated member of the Scientific Advisory Committee for the Initiative for Research and Innovation in Science (IRIS) by DST. He has also received the “Teacher with Best Research Contribution Award by Hon'ble Chancellor, Chandigarh University on Teachers Day. He has more than 80 research papers in international peer-reviewed journals, 10 peer-reviewed conference proceedings, 15 book chapters, and edited 7 books (authored and co-authored). He has more than 3490 citations with an h-index of 34 & an i10-index of 69. He has edited the Virtual Special Issue of Vacuum - Journal – Elsevier, Materials Today: Proceedings and Crystals-MDPI. He has organized various short-term courses and conferences/workshops. He is a section Topic Editors for ‘Polymeric Materials’ Materials MDPI Journal. He has delivered invited talks, chaired sessions, and presented his work at various National and International Conferences. His research experience, as well as research interests, lie in synthesis, processing, and characterization of functional materials, solid-state luminescent materials, bio-based/biodegradable polymers, and composites, conducting polymers, drug delivery devices, wastewater treatment, and ion solid interaction. Dr. Vishal Sharma is presently working as an Assistant Professor at the Institute of Forensic Science & Criminology, Faculty of Science, Panjab University, Chandigarh, India. He currently heads the Institute at Panjab University. He has obtained his Ph.D. degree in Physics from Kurukshetra University, Kurukshetra, India and Inter University Accelerator Centre, New Delhi, India. He is the recipient of DAE Young Scientist Research Award in 2011. Recently he has been conferred the best researcher award by Panjab University under Promotion of University Research and Scientific Excellence (PURSE), DST Govt. of India grant and Dr. P.D. Sethi National Award in 2018. He is the author of more than 90 peer-reviewed scientific papers, six book chapters and three books as editor. His current research focus is in the field of Material Science and includes the synthesis of smart materials for different applications, nanophosphors, hydrogels, sensors (drug sensing, fingermark sensing). Prof. Hendrik C Swart is a B1 NRF rated researcher (Internationally acclaimed researchers) and currently a senior professor in the Department of Physics at the University of the Free State. Over the past 22 years he has led research in the area of the degradation of phosphors for field emission displays, as well as developing materials for nano solid state lighting. He has been key in the development of processes to synthesize and deposit thin films of various types of semiconductor nano-particles which will enhance the color, luminescent intensity and lifetime of such displays. He has more than 650 publications in international peer reviewed journals. Dr. Subrata Das is a distinguished materials scientist in India and a Senior Scientist at CSIR-National Institute for Interdisciplinary Science and Technology Thiruvananthapuram since mid-2017. He received his Ph.D. from the Indian School of Mines Dhanbad (presently known as Indian Institute of Technology (Indian School of Mines) Dhanbad) in 2010. In mid-2011, he joined the Optoelectronic Research Laboratory in the Chemical Engineering Department of National Taiwan University. He was selected for the National Science Council post-doctoral fellowship in Taiwan in 2013. His research focuses on down-converted phosphors for lighting and display applications, upconverted nanophosphors for sensor and imaging applications, persistent or dark glow phosphors for energy-saving displays, and night vision applications."