Fabian Ezema is a Professor at the University of Nigeria, Nsukka, and a visiting professor to NRS-EMT (MATECSS UNESCO Chair) in Varennes, Quebec, Canada and iThemba Labs South Africa. He is also a Fellow of UNESCO-UNISA South Africa Chair in Nanosciences and Nanotechnology (U2ACN2). His research interests are in several areas of materials science including synthesis and characterization of particles and thin film materials through chemical routes with emphasis on energy applications. Fahad Usman is an Assistant Professor of Engineering Technology at the Connecticut State Community College Norwalk, United States. He was a Senior Lecturer and the head of the Department of Physics, Al-Qalam University Katsina, Nigeria and a postdoctoral researcher at the Centre for Advanced Industrial Technology, University of Malaysia Pahang, Malaysia. Fahad was the Director of Institute of Semi-Arid Zone Studies and the pioneer Chairman, Committee for the University Inaugural Lectures, Seminars, Conferences and Public Lectures, Al-Qalam University Katsina. He has been working on the development of optical sensors for medical applications and novel optical materials since 2017 and has authored/co-authored over 45 Scopus/Web of Science (WoS) indexed journal publications including research articles and reviews. Fahad is a regular reviewer of many reputed international journals.Rajan Jose is Chair Professor in the Battery Research Center of Green Energy at Ming Chi University of Technology, New Taipei City, Taiwan. His current research interests include renewable energy devices, sustainable materials, circular economy, data science, and artificial intelligence.