Sudheesh K. Shukla is a researcher with the Department of Chemical Sciences, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa; and Associate Professor at the School of Chemical Engineering and Physical Sciences, Lovely Professional University, Phagwara, India. His research involves real-time analysis of biochemical markers for personalized healthcare and environmental monitoring. Prof. Chaudhery Mustansar Hussain is an Adjunct Professor and Director of laboratories in the Department of Chemistry & Environmental Sciences at the New Jersey Institute of Technology (NJIT), Newark, New Jersey, United States. His research is focused on the applications of nanotechnology and advanced materials, environmental management, analytical chemistry, and other various industries. Dr. Hussain is the author of numerous papers in peer-reviewed journals as well as a prolific author and editor of around 150 books, including scientific monographs and handbooks in his research areas.