Fabian Ezema is a Professor at the University of Nigeria, Nsukka. He obtained a PhD in Physics and Astronomy from University of Nigeria (UNN), Nsukka in the year 2000. His research interests are on several areas of Materials Science: synthesis and characterizations of particles, and thin film materials on energy and sensing applications. He was a CV Raman Fellow at the Shivaji University Kolhapur India in 2011 and MIF Fellow at Tokyo University of Science, Japan in 2013. He is currently 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). He is awarded UNISA visiting researcher for 12 months to work on perovskite solar cells. He is the team leader of the Nano Research Group at UNN, an Acting Director, International Office of the University of Nigeria. He is the pioneer Dean of the Faculty of Natural and Applied Sciences, Coal City University, Enugu on sabbatical leave. With international collaborators from Canada, USA, Japan, South Africa, Singapore, Malaysia, India, Pakistan, etc, Fabian has published over 140 high impact papers in various national and international journals and gave over 30 talks at various conferences, workshops and seminars.