Senior Lecturer
Department of Materials Technology,
Faculty of Technology,
Rajarata University of Sri Lanka,
Mihintale, Sri Lanka.
rajayara@tec.rjt.ac.lk
Education
- Ph.D. in Materials Science and Engineering – College of Engineering, Chungnam National University, South Korea
- M.Sc. in Nanoscience and Nanotechnology – PGIS, University of Peradeniya
- B.Tech. in Science and Technology specialized in Materials Technology – Faculty of Applied Sciences, Uva Wellassa University
Teaching Courses
- MTT 2207 – Measurements, error analysis and instrumentation
- MTT 3202 – Degradation of Materials
- MTT 4121 – Research Methodology and Scientific Writing
- MTT 2112 – Introduction to Thermodynamics
- MTT 4311 – Advanced Materials
- MTT 4820 – Research Project
Research Interests
- Nanomaterials: synthesis, structural and surface characterization, and application in catalytic and energy conversion technologies.
- Polymer composites: development of polymer composite materials, processing and performance optimization.
Appointments and Administrative Experiences
- Senior Lecturer at the Department of Materials Technology, Faculty of Technology, Rajarata University of Sri Lanka [ Aug 2025 – Present ]
- Faculty Chair, Career Guidance and Industry Relations Unit , Faculty of Technology, Rajarata University of Sri Lanka, January 2026- Present
- Faculty Chair, Research and Publication Committee, Faculty of Technology, Rajarata University of Sri Lanka, January 2026- Present
- Faculty Chair, Gender Equality/Equity Cell, Faculty of Technology, Rajarata University of Sri Lanka, January 2026- Present
- Lecturer (Probationary) at the Department of Materials Technology, Faculty of Technology, Rajarata University of Sri Lanka [ Oct 2017 – Aug 2025 ]
- Lecturer (Temporary) at the Department of Physical Sciences, Faculty of Applied Sciences, Rajarata University of Sri Lanka [ June 2017 – Oct 2017]
- Visiting demonstrator at the Faculty of Natural Sciences, Kandy Regional Center, The Open University of Sri Lanka [ March 2017– May 2017 ]
- Temporary Demonstrator at the Department of Science and Technology, Faculty of Applied Sciences, Uva Wellassa University [ Jan 2015 – April 2016]
- Trainee, Quality Assurance Team, Textrip (Pvt) Ltd. [ July 2014 – Sep 2014]
Research Grants / Intellectual Property
- University Research Grant, Rajarata University of Sri Lanka (Grant No: RJT/R&PC/2026/R/FOT/01)
Research Studies and Projects
Ongoing Research
- Band gap engineering via doped green calcium oxide nanocatalyst for enhanced photocatalytic dye degradation
- Megathyrsus Maximus Derived Nanocellulose Super Absorbent Material for Sustainable Baby Diaper
- Fabrication of Sustainable Elastomeric Composites from Textile Waste Materials
Publications
- Roshani Awanthika Jayarathna, Jun-Ho Heo, Eui-Tae Kim, Enhanced photoelectrochemical water splitting of In2S3 photoanodes by surface modulation with 2D MoS2 nanosheets, Nanomaterials 14 (2024) 1628. https://doi.org/10.3390/nano14201628
- Dong-Bum Seo, Viet Dongquoc, Roshani Awanthika Jayarathna, Sangyeob Lee, Jae-Hyun Lee, Eui-Tae Kim, Rational heterojunction design of 1D WO3 nanorods decorated with vertical 2D MoS2 nanosheets for enhanced photoelectrochemical performance, Journal of Alloys and Compounds 911 (2022) 165090. https://doi.org/10.1016/j.jallcom.2022.165090
- Sung-Su Bae, Dong-Bum Seo, Roshani Awanthika Jayarathna, Sangyeob Lee, Eui-Tae Kim, Boosting the photoelectrochemical performance of vertically aligned MoS2 nanosheets by Ag2S decoration, Materials Letters 326 (2022) 132914. https://doi.org/10.1016/j.matlet.2022.132914
- Kedhareswara Sairam Pasupuleti, Roshani Awanthika Jayarathna, Seon Young Hwang, Pham Thi Minh Thu, Devthade Vidyasagar, Yun-Hae Shim, Eui-Tae Kim, Youngku Sohn, Young Heon Kim, Moon-Deock Kim, NiO@GaN nanorods-based core-shell heterostructure for enhanced photoelectrochemical water splitting via efficient charge separation, Journal of Alloys and Compounds 1009 (2024) 176882. https://doi.org/10.1016/j.jallcom.2024.176882
- Roshani Awanthika Jayarathna, Dong-Bum Seo, Sung-Su Bae, and Eui-Tae Kim, 2D BiVO4 nanosheets vertically Grown on WO3 nanorods for efficient photoelectrochemical water splitting, Materials Research Society of Korea, Fall conference, Jeju, South Korea, November 9-11, 2022.
- Roshani Awanthika Jayarathna, Dong-Bum Seo, Sung-Su Bae, and Eui-Tae Kim, Efficient photoelectrochemical water splitting of BiVO4 nanosheets vertically synthesized on WO3 nanorods, EN04.06.05, Materials Research Society, MRS Spring meeting and exhibit, San Francisco, California, USA, April 10-14, 2023.
- Kedhareswara Sairam Pasupuleti, Roshani Awanthika Jayarathna, Na-Hyun Bak, Yun-Hee Shim, Eui-Tae Kim, Moon-Deock Kim, Interfacial engineering of type-II heterostructure based on NiO@GaN nanorods with accelerated charge separation for enhanced photoelectrochemical water splitting, The 21st International Symposium on the Physics of Semiconductors and Applications (ISPSA 2024) P1_EN_0611, Jeju, Korea, June 2 – 6, 2024.
- D.N.Liyanage, R.Awanthika, D.P.N.de Silva, D.D.C.Wanniarachchi, Metal-glyphosate complexes- synthesis, characterization and toxicity evaluation by zebra-fish embryo toxicity test. Proceeding of 4th annual research sessions of Sri Lanka Association for Laboratory Animal science (SLALAS), Wayamba University of Sri Lanka, 23-24th January 2017.
- 9.D.N.Liyanage, R.A.Jayarathna, D.D.C.Wanniarachchi, Study on relative reactivity and toxicity of metal-glyphosate complexes. Proceedings of the Research Symposium of Uva Wellassa University, Sri Lanka, 28-29th January 2016, p188.
- R.A.Jayarathna, H.M.J.C.Pitawala, M.A.K.L.Dissanayake, Effect of TiO2 nano filler on ionic conductivity of poly(ethylene oxide) based gel polymer electrolyte for Magnesium ion batteries, Proceedings of the Research Symposium of Uva Wellassa University, Sri Lanka, pp 57-60, 29-30th January 2015.
