Dr. Roshan Thotagamuge is a senior lecturer in the Department of Optometry at the University of Sri Jayewardenepura. He earned his PhD in applied physics in 2015 from the Centre for Advanced Material and Energy Sciences (CAMES) at the Universiti Brunei Darussalam. From 2016 to 2019, he served as an assistant professor at the Universiti Brunei Darussalam, where he was promoted to senior assistant professor in 2019. Dr. Thotagamuge returned to Sri Lanka in 2022 and joined the Wayamba University of Sri Lanka, where he served until 2024 before assuming his current role at the University of Sri Jayewardenepura. His research interests include materials science, sensors, solar cells, molecular simulations, and nanotechnology.