5th Ruhuna International Science and Technology Conference (RISTCON 2018) is organized by the Faculty of Science, University of Ruhuna, Matara, Sri Lanka. The conference aims to bring together the interested academics, scientists, researchers and research students from Sri Lankan as well as foreign universities/institutes, and to provide them an international platform to share research findings on various themes in Science and Technology. The conference theme has been decided to be broad in order to accommodate as many Science and Technology areas as possible, and to be able to address technological advances and research findings in multidisciplinary areas