Ozone generation for industrial applications using pulsed power technology, Non-thermal gas discharges, and Plasma Physics (chemical plasmas)

Member, Institute of Electrical Engineers in Japan (IEEJ)

Member, Institute of Electrical and Electronics Engineers (IEEE)

Life Member, Sri Lanka Association for the Advancement of Science (SLAAS)

Life member, Chartered Physicist, Institute of Physics, Sri Lanka (IPSL) 

Bandara, H.M.S.N., & Samaranayaka, W.J.M (2025). Effect of MAX Phase Mo2TiAlC2 on the PVDF Ultrafiltration Membrane Properties and Performance. Journal of Research Updates in Polymer Science, https://doi.org/10.6000/1929-5995.2025.14.17, 14,165–170, October 2025. ISSN: 1929-5995   

H.M.S.N. Bandara, W.J.M. Samaranayake, “Effect of MAX phase Mo2TiAlC2 on the morphology and porosity of PVDF ultrafiltration membranes”, Proc. S.L. Assoc. of the Advmt. Sci., 81st Annual Session, No. 508/E1, pp. 79, December 2025.

H.M.S.N. Bandara, W.J.M. Samaranayake, ”Low-Cost Pressing Technique for Polymer Membrane Casting as an Alternative to the Scotch Tape Method”, The 6th International Conference on Applied Physics and Simulation (ICAPS). Abstract No: PP-06, Page 198 in Conference Proceedings, October 2025.  ISSN: 2815-0112.

H.M.S.N. Bandara, K.D.Y Bandara, P.D.A. Prasad, W.J.M. Samaranayake, ”Development of a Low-Cost Membrane Performance Testing Apparatus for Academic and Research Applications”, The 6th International Conference on Applied Physics and Simulation (ICAPS). Abstract No: PO-37, Page 127 in Conference Proceedings, ISSN: 2815-0112, October 2025.

H.M.S.N. Bandara, W.G.C. Kumarage, W.J.M. Samaranayake, “Enhancing PVDF Ultrafiltration Membranes with Mo2TiAlC2 Max Phase for Sustainable Water Treatment Applications”,  Proc. of the 2nd International Conference on “University-Industry Collaborations for Sustainable Development (ICSD), Colombo,  Sri Lanka, pp. 86, May 2025.

A.M.M.N.B. Amarakoon, W.P.T. Hansameenu and W.J.M. Samaranayake “Study of the improvement of Ozone production: A simulation”,  Proc. of International Conference on “Applied and Pure Sciences”(ICAPS), Faculty of Science, University of Kelaniya, Sri Lanka, PO 05, pp. 32, October 2022.

L.M. Gunasinghe, W.J.M. Samaranayake and W.P.T. Hansameenu, “Design of heat sink & simulation of electronic cooling of power transistor circuit”,  Proc. of International  Conference on “Applied and Pure Sciences” (ICAPS), Faculty of Science, University of Kelaniya, Sri Lanka, PO 08, pp. 35, October 2022.

A. G. T. De Silva, W. J. M. Samaranayake and K. M. D. C. Jayathilaka, “Electrolytic Hydrogen Production Using Solar Power,” Proc. of Inaugural International Conference on “Frontiers in Nanoscience & Nanotechnology”, Faculty of Applied Sciences, Sabaragamuwa University, Sri Lanka, D3, pp. 44, 2016.

D. R. A. Mendis and W. J. M. Samaranayake, “The effect on the surface tension of brilliant white paint coatings by chemical and detergent additives,” Proc. S.L. Assoc. of the Advmt. Sci., 68th Annual Session, No. 508/E1, pp. 58, December 2012.

D. R. A. Mendis and W. J. M. Samaranayake, “Determination of the Temperature Coefficient of the Refractive Index of Liquids for Immersion Lithography,” Proc. of 28th Technical Session, Institute of Physics, pp. 77 - 83, March 2012.

W. J. M. Samaranayake, Y. Miyahara, T. Namihira, S. Katsuki, T. Sakugawa, R. Hackam and H. Akiyama, "Pulsed Streamer Discharge Characteristics of Ozone Production in Dry Air," IEEE Trans. DEI, Vol. 7, pp. 254-260, April 2000.

W. J. M. Samaranayake, Y. Miyahara, T. Namihira, S. Katsuki, R. Hackam and H. Akiyama, "Ozone Production Using Pulsed Dielectric Barrier Discharge in Oxygen," IEEE Trans. DEI, Vol. 7, pp. 849 -854, December 2000.

W. J. M. Samaranayake, Y. Miyahara, T. Namihira, S. Katsuki, R. Hackam and H. Akiyama, “Ozone Generation in Dry Air Using Pulsed Discharges With and Without a Solid Dielectric Layer,” IEEE Trans. DEI, Vol. 8, pp. 687 -697, August 2001.

W. J. M. Samaranayake, Y. Miyahara, T. Namihira, S. Katsuki,  R. Hackam and H. Akiyama, “Pulsed Power  Production of Ozone in O2/N2 in a Coaxial Reactor Without Dielectric Layer,” IEEE Trans. DEI, Vol. 8, pp. 826 -831, October 2001

H. Akiyama, Y. Miyahara, W. J. M. Samaranayake and S. Katsuki, "Characteristics of Oznizer by Means of Pulsed Power, Recent Development of Ozonizer" J. Plasma and Fusion Research, Vol. 74, No. 10, pp.1139- 1143, in Japanese 1998.

W.  J. M. Samaranayake, Y. Miyahara, T. Namihira, S. Katsuki, T. Sakugawa, R. Hackam and H.   Akiyama, "Pulsed Power Production of Ozone Using Non-thermal Gas Discharges, " IEEE Electrical Insulation Magazine, Vol. 17, pp. 17 -25, July/August Issue, 2001.

W. J. M. Samaranayake and LSR Kumara, “High Voltage Engineering Applications in Sri Lanka”, IEEJ Magazine of Electrical Insulation News in Asia, p. 26, (November 2005).

W. J. M. Samaranayake, “Digital Electronics,” Physics Magazine of Inst. of Physics, Sri Lanka, No. 1, pp. 48-59, 2005.

W. J. M. Samaranayake, Y. Miyahara, S. Katsuki, I. Lisitsyn, R. Hackam and H. Akiyama, "Characteristics of Ozone Production by Pulsed Power, " 12 th IEEE Int. Pulsed Power Conference, Monterey, California, USA , PC067,  p.W-104, 1999.

W. J. M. Samaranayake, Y. Miyahara, S. Katsuki, I. Lisitsyn, R. Hackam and H. Akiyama,       "Ozone Production by Pulsed Power in Dry Air, " 12 th IEEE Int. Pulsed Power Conference, Monterey, California, USA , pp. 1326-1329, 1999.

W. J. M. Samaranayake, Y. Miyahara, T. Namihira, S. Katsuki, R. Hackam and H. Akiyama, "Ozone Production Using Cylindrical Reactors With and Without Solid Dielectric Layers in Dry Air, "IEEE Int. Conference on EIDP, Austin, Texas, USA, pp. 379-382, 17-20 October, 1999.

W. J. M. Samaranayake, Y. Miyahara, T. Namihira, S. Katsuki, R. Hackam and H. Akiyama, "Ozone Generation in Oxygen Using Pulsed Discharges," IEEE Int. Conference on EIDP, Victoria, BC, Canada, 15-18 October, 2000.

W. J. M. Samaranayake, Y. Miyahara, T. Namihira, S. Katsuki, R. Hackam and H. Akiyama, "Ozone Synthesis in Oxygen Using a Pulsed Discharge," IEEE Int. Conference on EIC, Cincinnati, Ohio, USA, pp. 449-452, 16-18 October, 2001.

W. J. M. Samaranayake, R. Hackam and H. Akiyama, "Ozone Synthesis in a Cylindrical Dry Air-fed Ozonizer by Non Thermal Gas Discharges ," IEEE Int. Conference on Properties and Application of Dielectric Materials (ICPADM), Nagoya, Japan, pp. 547-550, 1-5 June, 2003.

W. J. M. Samaranayake, Y. Miyahara, T. Namihira, S. Katsuki, R. Hackam and H. Akiyama, "Influence of Gas Mixtures on and Characteristics of Ozone Production by Pulsed Power, " National Convention Record I.E.E. Japan, pp. I-112, 23 rd March, 1999.

W. J. M. Samaranayake, Y. Miyahara, T. Namihira, S. Katsuki, R. Hackam and H. Akiyama,  "Ozone Production in Oxygen, Dry Air and in Gas Mixtures of Oxygen and Nitrogen Without a Dielectric Layer Using Pulsed Power, " Discharge Conf. IEEJ, ED-01-33/DEI-01-39/HV-01-33, pp. 87-92, 2001.

Y. Miyahara, W. J. M. Samaranayake, S. Katsuki, H. Akiyama, S. Maeda and T. Sakugawa,   “Temporal Distribution of Ozone Using Pulsed Power,” Jt. Conf. EEE in Kyushu, No. 1560, p. 876, 1998.

Y. Miyahara, W. J. M. Samaranayake, S. Katsuki, H. Akiyama, S. Maeda and T. Sakugawa, “Ozone Generation Using Pulsed Power,” National Convention Record I.E.E. Japan, No. ED-98-219, 1998.

W. J. M. Samaranayake and L.S.R. Kumara, “High Voltage Engineering Applications in Sri Lanka”, IEEE Int. Symposium on Electrical Insulating Materials (ISEIM), International Technical Exchange Session, Kitakyushu, Japan, ES-7, pp. 139-142, 5-9 June, 2005.

J. H. S. R. De Silva and W. J. M. Samaranayake, "Universal Length Measuring Tool of Insulation ," IEEE Int. Symposium on Electrical Insulating Materials (ISEIM), Kitakyushu, Japan, P2-60, pp. 760-762, 5-9 June, 2005.

W.J.M. Samaranayake, “Numerical Simulation of Ozone Using Pulsed Discharges in Oxygen,” CHEMTECH 2007, Institute of Chemistry Ceylon, Bandaranaike Memorial International Conference Hall, Colombo, Sri Lanka, Vol. 2, pp. 7-11, 2007.

W. J. M. Samaranayake and K. P. S. C. Jayaratne, “Determination of Lightning Charge Centre Location From Two Station Electrostatic Field Change Measurements,” Proc. S.L. Assoc. of the Advmt. Sci., 51st Annual Session, No. E1-04, pp. 338-340, November, 1995.

K. P. S. C. Jayaratne and W. J. M. Samaranayake, “Some Characteristic Features of Radiation Field Signatures from Tropical Cloud Flashes ,” Journal of Inst. of Physics, Sri Lanka, JIPSL-11, Vol. 10, No. 1, March 1995.

W. J. M. Samaranayake and K. P. S. C. Jayaratne, “Occurrence Percentage and Characteristics of Different Lightning Flashes by Means of Radiation Field Measurements,” Proc. S.L. Assoc. of the Advmt. Sci., 52nd Annual Session, No. E1-09, pp. 164 – 165, November 1996.

W. J. M. Samaranayake and K. P. S. C. Jayaratne, “Charge and Size Distribution of Raindrops,” Proc. S.L. Assoc. of the Advmt. Sci., 52nd Annual Session, No. E1-10,                  pp. 165 – 166, November 1996.

K. M. D. C. Jayathilaka and W. J. M. Samaranayake, “Design of an Electronic House Protection System,” Proc. S.L. Assoc. of the Advmt. Sci., 60th Annual Session, No. 501/E1,     pp. 199, December 2004.

J. H. S. R. De Silva and W. J. M. Samaranayake, “Modifications Resulting in a Faster, Quieter and Cooler PC,” Proc. S.L. Assoc. of the Advmt. Sci., 60th Annual Session, No. 502/E1, pp. 200, December 2004.

Awarded “Astronomer Royal’s prize for Physics” for the best postgraduate research student in Physics, University of Colombo, 1996

Awarded Japanese Government Monbusho Scholarship for higher studies. 1997

The best poster presentation award “IOP-PPCF (Institute of Physics-Plasma Physics Controlled Fusion) prize” for a young researcher from ICTP (International Centre for Theoretical Physics), Trieste, Italy. 2009

Awarded a scholarship by the Gavernment of India for the training program on “a special training course in nanofabrication technologies” at the Centre for Nano Science and Engineering, Indian Institute of Science”, Bangalore, India January/ February, 2016.

Awarded karema fellowship by the German Research Foundation (DFG) and the Federal Ministry of Education and Research, Germany. 2017 

Fellow - Institute of Physics, Sri Lanka

Achieved the status of karema fellow in Kaiserslautern, Germany 2016 Subject Specialist of Physics for Technology.