- N. W. H. G. B. Nagahapitiya, N.W.K. Jayatissa, Analysis for maimum energy transfer from existing DC-to-DC converter topologies. In Proceedings of the International Research Symposium on Pure and Applied Sciences (IRSPAS 2017), Faculty of Science, University of Kelaniya, Sri Lanka. p 95.
- N.W.K. Jayatissa, Thermal desalination Process- Design perspectives. In Proceedings of the International Research Symposium on Pure and Applied Sciences (IRSPAS 2017), Faculty of Science, University of Kelaniya, Sri Lanka. p 97. (2017).
- Jayatissa, N. W. K., Attalage, R., Hewageegana, P., Perera, P. A. A., & Punyasena, M. A., Long Term Stability of an Experimental Insulated-Model Salinity-Gradient Solar Pond. World Academy of Science, Engineering and Technology, International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering, 10(2), 319-324. (2016).
- Seneviratne, K. and Jayatissa, N.W.K., Intelligent Window Controlling System. In proceedings of the 17th Conference on Postgraduate Research, International Postgraduate Research Conference 2016, Faculty of Graduate Studies, University of Kelaniya, Sri Lanka. p 164. (2016).
- Piyumal, P.L.A.K., Nagahapitiya, N.W.H.G.B., Jayatissa, N.W.K. and De Silva, D.S.M., Energy efficient hybrid water heating system. In Proceedings of the International Research Symposium on Pure and Applied Sciences (IRSPAS 2016), Faculty of Science, University of Kelaniya, Sri Lanka. p 45. (2016).
- C R Munasinghe and N.W.K. Jayatissa, Low energy mechanical driver for solar trackers, 30th Tech. Sess. Inst. Phys., Sri Lanka (2014)
- H M P C Jayaweera and N.W.K. Jayatissa, Digital wind speed and angle measuring system, 29th Tech. Sess. Inst. Phys., Sri Lanka (2013)
- N W k Jayatissa, Philippa Howden-Chapman, Helen Viggers, Monthly Average Daily Solar Radiation on Wellington Roof Tops.,Otago Energy Research Centre Symposium, New Zealand (2012)
- MDGM Abeyratne, IU Kalupahana, WAP Buddhika, SD Kumara, NWK Jayatissa, LBDRP Wijesundera, JC. Harambearachchi, and SRD Kalingamudali, An Inexpensive Universal Serial Bus Interfaced Home Automation System, Proc. IET Nineteenth Annual Technical Conference, Sri Lanka (2012)
- N. W. K. Jayatissa, P. S. Hewageegana, P. A. A. Perera, M. A. Punyasena, Optimization of Thermal Insulation of a Small-scale Experimental Solar Pond, Sri Lanka J. of Phys. 13, 49-57 (2012).
- A D Maduranga, H H Sumathipala. and N W K Jayatissa, Investigating the thermal efficiency of commercially available thermo-foils in Sri Lanka,J Sci.Univ.Kelaniya v6, 01-12 (2011)
- A.D. Maduranga, H.H. Sumathipala and N.W.K. Jayatissa, Investigating the Thermal Efficiency of Thermo-foils as a Roof Insulation Material, 27th Tech. Sess. Inst. Phys., Sri Lanka (2011)
- WDS Wijesiri, NWK Jayatissa and JRP Jayakody, UV absorption properties of natural solutions, Proc. 9th Annual Research Symp. 2008, University of Kelaniya, p. 123 (2008)
- NWK Jayatissa and MA Punyasena,Construction and performance-analysis of a 'Solar-light" for efficient use of daylight, Proc. 9th Annual Research Symp. 2008, University of Kelaniya, p. 122 (2008)
- M Alkaisi, W Jayatissa and M Konijin, Multilevel Nanoimprint Lithography, Current Applied Physics, ELSEVIER, Vol. 4, pp. 111-114 (2004)
- W Jayatissa, M Aalkaisi and R Blaiki, Direct Three Dimensional Imprint Lithography using SixNy molds, Digest of Papers, International Conference of Microprocessors and Nanotechnology, MNC-2002, pp 162, Japan (2002)
- W Jayatissa, M Aalkaisi and R Blaiki, Direct Three Dimensional patterning, Poster session, International Conference of Microprocessors and Nanotechnology, 7p-7-33, Japan (2002)
- W Jayatissa, C Davis, G Carrington and G Chen, Energy use in Controlled Temperature Marine Aquaculture, International Journal of Energy Research, Vol. 26 (15), pp. 1333-1343 (2002)
- W Jayatissa, G Carrington, C Wells and G Chen, Temperature Controlled Abalone Aquaculture, Proc. IRHACE Technical Conf., pp. 21 -31, New Zealand (2001)
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