Department of

Dr. Gayan .D. Illeperuma

Ph.D. (col), B.Sc. (Hons) comp. Physics (second class upper), B.I.T. (second class upper), Charted Physist

Senior Lecturer - Grade II

Department of Physics

I currently work as a senior lecturer at the department of physics, OUSL. I got my Ph.D. from the University of Colombo.

I like to teach others. I also like to invent new things.
I believe in inter deciplinary research. My research is not limited to physics. They vary from studying animal behaviors to predicting the share market.

Artificial Intelligence, Electronics

Bio-mimicry, Artificial Intelligence, Electronics, STEM education and Interdisciplinary research and inventions
  • Former Research Scientist at Industrial Technology Institute ( CISIR)
  • Visiting Lecturer at the University of Colombo.

Coordinator, Neo-Sapce innovation fab lab, OUSL

Director, Industrial Liasion Center, OUSL

PHU4303: Mathematical Methods for Physics
PHU4301: Electronics
PHU6304: Advanced Electronics

  • M.S.M.Aoos,R.Weerasinghe,A.S.Pannila andG.D.lleperuma,”Radio Frequency Based Street Light Management System”,Institute of Physics,Sri Lanka,29 thTechnical Sessions, 29 ,2013,ISSN 1391-5800,p 49-56
  • G.D.Illeperuma,D.U.J.Sonnadara,”Simulation of optical flow and fuzzy based obstacle avoidance system for mobile robots”, 2015,International Journal of Artificial Intelligence and Neural Networks– IJAINN , Volume 5 : Issue 1 [ISSN : 2250-3749] , p 53 – 56
  • M.C. Nuwan, G.D.Illeperuma, “Touch Screen Technology Based on Acoustic Pulse Localization”,Annals. Computer Science Series,vol 13,July 2015,ISSN: 2065-7471,pg 15-16
  • Illeperuma G.D.,Abeywardena K.,”A Genetic Algorithm for University Timetabling”, Journal of Innovation Sciences and Sustainable Technologies, 2(1)-2022-,p1-9.

Illeperuma G.D., Sonnadara D.U.J.,  “Forecasting droughts using artificial neural networks” National symposium on disaster management, Sri Lanka, 2009,. ISBN: 978-955-9321-11-8 p- 51

Illeperuma G.D., Sonnadara D.U.J., “Simulation of optical flow using Simulink”, 28th National Information Technology Conference (NITC), 2010, ISBN:978-955-9155-18-8 , p -31

Illeperuma G.D., Sonnadara D.U.J.,  “Optical flow based autonomous robot navigation” , (ICIIS conference 2011),  IEEE (CFP1158A-CDR) ISBN: 978-1-4547-0034-7 , p 77

Illeperuma G.D. “Using image processing to automate chess game recording” Institute of Physics Sri Lanka, Proceedings of 27th technical session, 2011, ISSN 2012-8975 , p 76 -83

Illeperuma G.D., Sonnadara D.U.J.,  “Object tracking using optical flow”, Annual Research Symposium, University of Colombo (2011)

Illeperuma G.D. “Generating true random numbers based on Chua’s circuit”,Wayamba International Conference ,2014, DOI: 10.13140/2.1.5107.3281 

G.D.Illeperuma,D.U.J.Sonnadara,”Simulation of optical flow and fuzzy based obstacle avoidance system for mobile robots”,2014,Proc. of the Second Intl. Conf. on Advances in Applied Science and Environmental Engineering,ISBN: 978-1-63248-033-0 doi: 10.15224/ 978-1-63248-033-0-19

S.Sandaruwan, G.D. Illeperuma, D.U.J. Sonnadara, “Collision Detection through Optical Flow”,Institute of Physics Sri Lanka, Proceedings of 32nd technical session, 2016,, p 1 -8

Nilmini, K., Illeperuma, G.D. , “Low Cost Electronic Stethoscope”,Keleniya International Conference on Advances in Computing and Technology (KICACT -2016),p 40-41,ISBN- 978-955- 704-013- 4

Illeperuma G.D., Sonnadara D.U.J.,”Computer Vision Based Object Tracking as a Teaching Aid for High School Physics Experiments”,International Conference on Electrical Engineering, Computer Science and Informatic (EECSI -2017), ISBN-978-1-5386-0549-3 

Illeperuma G.D.,Abeywardena K.,”A Genetic Algorithm for University Timetabling”, International Conference on Multidisciplinary approaches in Science 2021

H.A. Rangana Madushanka Perera, P.G.T.R. Payagala, L.A.D.B.K. Gunawardana, G.D. Illeperuma and V.P.S. Perera,”Design and Development of Real-Time Controller Based on ARM cortex-M Processor for Automated Altitude-Azimuth Telescope Mount”, 38th Technical Sessions,Institute of Physics – Sri Lanka

Volume 38, 2021 p – 46

Payagala. T.R., De Silva. M.D., Edirisinghe. C.K, Fernando. T.S.P, Padmalal. U.K.G.K, Illeperuma. G.D, “Developing a low-cost semi-autonomous electric fence monitoring system”, Proceedings of the Annual Session -2020, P-14

G.W.M.D. De Silva*, P.G.T.R. Payagala, C.K. Edirisinghe, G.D. Illeperuma and V.P.S. Perera,”Development of a Cost-Effective and Reliable Spin Coating Device Promoting Local Enterprises to Meet the Research Needs “, 37th Technical Sessions,Institute of Physics – Sri Lanka

Volume 37, 2021 p – 46-53


  • A novel method to remove reflection in camera images ( LK/P/1/15122 )
  • Pending : Portable electronic device for sensory substitution to aid visually (LKP116801)
  • Pending “Method for transformation of homogeneous surfaces to touch screens using time difference of arrival in acoustic signals” (LK/P/1/18437)
  • Gold medal for the best innovation in the field of communication and entertainment, Sahasak Nimewum , National Invention and Innovation Exhibition- 2015 for low cost touch screen technology
  • Silver medal for the innovation in the field of making the disabled independent, National Invention and Innovation Exhibition- 2014, for “sensory substitution vision for visually disabled”
  • Susewabhimaani National award ,2015
  • 2nd runner up 3MT thesis competition, Organized by SLAYS


  • Member, Institute of Physics Sri Lanka (IPSL)
  • Member: Sri Lanka Association for the Advancement of Science (SLAAS)