Professor Isaac Rotimi AJAYI was born 20th March, l965 in Akure, Ondo State, Nigeria. He attended the St. James’ Primary School in Akure between l970 and l977 for primary education and Ebun Ogunyimika College, Atosin, Idanre, between l977 and 1982 for his secondary education. Professor Ajayi was admitted into the University of Ibadan in 1983 where he studied Physics and graduated B.Sc. with Second Class (Upper Division) in 1987. He later obtained M.Sc. in 1990 and bagged a Ph.D. in l994 from the same University.
Professor Ajayi started his academic career as an Assistant Lecturer in l990 and rose through the ranks to become a Professor of Radiation and Health Physics in 2007 in the Department of Physics and Electronics, Adekunle Ajasin University (formerly Ondo State University), Akungba-Akoko. Professor Ajayi has published extensively in several academic journals around the world. His primary research interests are in Radiation Dosimetry and Protection, Radioecology and Radiation Transport. He has authored and co-authored more than 75 publications in learned journals and written many books notable of which are: Concise Mechanics for Scientists and Engineers, and Basic Electricity and Magnetism. He has also attended and spoken in more than 45 academic conferences and workshops at in Nigeria and in foreign countries like USA, UK, Israel, Germany, Italy, South Africa, Kenya, Namibia and Ghana.
Professor Ajayi has won many research grants and successfully coordinated several research projects including the National Space Research and Development Agency in Abuja (NARSDA) research projects in Adekunle Ajasin University, Akungba-Akoko, Ondo State. He facilitated the establishment of the Centre for Space, Energy and Environmental Research (CSEER) in the University in 2009. Professor Ajayi is a Fellow of the Nigerian Institute of Physics (NIP) and a member of the Health Physics Society USA among many other professional associations. He has been External Examiner to postgraduate programmes in many universities and has led NUC accreditation panels on programme accreditation to several universities in Nigeria. He has also successfully supervised 4 Ph.D theses.
Professor Ajayi enjoyed the Federal Government of Nigeria postgraduate scholarship at the University of Ibadan in l988 and a beneficiary of several International Atomic Energy Agency (IAEA) training at the International Centre for Theoretical Physics, Trieste, Italy. Professor Ajayi was appointed a Regular Associate of the UNESCO International Centre for Theoretical Physics, Trieste, Italy in 2006 and served as Visiting Research Scientist to the Centre 2006 -2013. He also as a visiting Research Associate at the Institute of Environmental Physics, University of Bremen, Germany between 2005 and 2007.