• Astronomy and Astrophysics
• Observational Astronomy
• Asteroseismology
• Binary Star Modeling
• Pulsation Analysis

International Journals:

• Dharmathilaka J. A. D. M, Medagangoda N. I., De Silva L.M.M, Aponsu G. M. L. P, Ruwangika N. R. A. M, “Outbursts Analysis of Dwarf Novae Subtypes”, International Journal of Advanced Research in Science, Engineering and Technology, Vol. 6, Issue 3 , March 2019, pp 8467 – 8479, ISSN: 2350-0328, http://www.ijarset.com/currentissue.html

Conference Proceedings- Published as a Full Papers

• Dharmathilaka, J. A. D. M., Adassuriya, J., Jayaratne, K. P. S. C., & Gutierrez, J. L. (2025), 'Light Curve Modeling of Eclipsing Binary Systems with Delta Scuti Component', Proceedings of the Technical Sessions - 41 (2025), Institute of Physics, Sri Lanka, pp 40-49, DOI: 10.48550/arXiv.2504.00482

Conference Proceedings- Published as an Abstracts

• M.S. Wanigarathne, W.T.L.S. Fernando, J.A.D.M. Dharmathilaka, P.R.S. Tissera (2025), 'Review on Improving the LiDAR Technology for Adverse Weather Conditions', 2^nd Undergraduate Research Symposium of Technology, Faculty of Technology, Sabaragamuwa University of Sri Lanka, p 61, ISSN 3084-9071
• Tissera, P. R. S., Medagangoda N.I., Bandara, N. S., Dharmathilaka, J. A. D. M., & Aponsu, G. M. L. P. (2024), 'Investigating the Mean Temperature of Accretion Disks and Mass Transfer Rates in Cataclysmic Variable Stars through Orbital Characteristics', KDU Journal of Multidisciplinary Studies, Vol. 6, Issue 2, pp 157-171, DOI: 10.4038/kjms.v6i2.137
• Rathnayake R.R.L.D., Gunasekara S.S., Medagangoda N.I., Abuthahir M.S., Dharmathilaka J.A.D.M., Fernando W.T.L.S., Tissera P.R.S.;(2024), ‘Determination of Apparent Magnitudes of the Standards of Praesepe (M44) Open Cluster using CCD Aperture Photometry’, Undergraduate Research Symposium of Technology & Applied Sciences Undergraduate Research Symposium, Faculty of Applied Sciences of the Sabaragamuwa University of Sri Lanka – 2024, p. 63, ISBN 978-624-5727-47-6
• E.G.O.D. Egodawaththa, H.N.M. Sarangika, V.P.S. Perera, J.A.D.M. Dharmathilaka, and G.M.L.P. Aponsu; (2023), ‘Hydrothermally Synthesized Nanostructured WO3 Thin Films for Electrochromic Devices’, Applied Sciences Undergraduate Research Symposium, Faculty of Applied Sciences of the Sabaragamuwa University of Sri Lanka – 2023, p. 6, ISBN 978-624-5727-36-0
• W.G.C.M. Kulasooriya, P.D. Buddika, R.M. Weerasighe, J.A.D.M. Dharmathilaka, and W.T.L.S. Fernando; (2022), ‘Application of Wheatstone and Maxwell’s Bridges to Detect Security Fence Breakdown Positions’, Applied Sciences Undergraduate Research Symposium, Faculty of Applied Sciences of the Sabaragamuwa University of Sri Lanka – 2022, p. 67, ISBN 978-624-5727-21-6
• P.H. Sooriyaarachchi, M.H.T. Dulaj, J.A.D.M. Dharmathilaka, H.M.B.I. Gunathilaka, R.C.W. Arachchige, H.N.M. Sarangika, and I.R.M. Kottegoda; (2022), ‘Further Enhancement of Physical Properties of Unglazed Traditional Cookware’, Applied Sciences Undergraduate Research Symposium, Faculty of Applied Sciences of the Sabaragamuwa University of Sri Lanka – 2022, p. 68, ISBN 978-624-5727-21-6
• N.I. Medagangoda, R.A.S.S. Gunasekara, J. Adassuriya, G.M.L.P. Aponsu, K.D. Bandara and J.A.D.M. Dharmathilaka; (2018), ‘Photometric studyof SN 2014J type Ia supernova’, Proceedings of the 74th Annual Sessions - 2018, Sri Lanka Association for the Advancement of Science, p. 69
• Dharmathilaka J. A. D. M., De Silva L. M. M. & Aponsu G. M. L. P., "Effect of Sound frequencies of 500 Hz, 20 kHz, and 75 kHz on the growth of green gram plants", 5th Ruhuna International Science and Technology Conference - 2018, Ruhuna University of Sri Lanka, pp 102, ISSN: 1391-8796  

• Semi-Conductor Physics
• Electronics
• Statistical Physics
• Advanced Electronics
• Astrophysics
• Advanced LASER Physics