1. Member- Sri Lanka Association for the Advancement of Science (SLAAS)

2. Member- National Science Foundation

3. Member-Institute of Physics Sri Lanka (IPSL)

Polymer electrolytes, Dye sensitized Solar Cells, Magnesium  batteries, Electrochromic devices

1. Modulation of Scheelite InVO₄, CaWO₄ semiconductor – employing carbon-supported materials (graphene, g-C3N4, C-dots) as electron flow mediators and          electrocatalysts for photoelectrochemical H₂-O₂ production direct splitting of water.

Journal Publications

1. Application of a nanostructured, tri-layer TiO₂ photoanode for efficiency enhancement in a quasi-solid electrolyte based dye-sensitized solar cells. M.A.K.L. Dissanayake, H.N.M. Sarangika, G.K.R. Senadeera, H.K.D.W.M.N. R. Divarathna, and E.M.P.C. Ekanayake, Journal of Applied Electrochemistry, 47 (11), 1239-1249, 2017.
2. Polyethylene oxide and ionic liquid-based solid polymer electrolyte for rechargeable Magnesium batteries., Sarangika H.N.M. , Dissanayake M.A.K.L., Senadeera G.K.R., Rathnayake R.R.D.V., Pitawala H.M.J.C, Thotawattage C.A., Ionics 23 (10), 2829-2835, 2016, https://doi.org/10.1007/s11581-016-1870-3
3. TiO₂ as a low cost, multi-functional material, MAKL Diasanayake, GKR Senadeera, HNM Sarangika, PMPC Ekanayake, CA Thotawattage, HKDWMNR Divarathne, JMKW Kumari, Materials Today: Proceedings 3, S40-S47, https://doi.org/10.1016/j.matpr.2016.01.006
4. Low cost quasi solid-state electrochromic devices based on F-doped tin oxide and TiO_2, H.N.M. Sarangika, M.A.K.L.Dissanayake, G.K.R.Senadeera, W.G.M.D. Karunarathne, Materials Today: Proceedings, https://doi.org/10.1016/j.matpr.2019.07.585

5. Efficiency enhancement in dye-sensitized solar cells irrespective of the electrolyte medium by nanostructured tri-layer TiO₂ photoanode, H.N.M. Sarangika, M.A.K.L.Dissanayake, G.K.R.Senadeera, IONICS, https://doi.org/10.1007/s11581-020-03620-7

6. Polymer‑free gel electrolyte and its application in TiO₂‑based electrochromic devices, devices, H. M. B. I. Gunathilaka, V. A. Seneviratne, H. N. M. Sarangika, Journal of Applied Electrochemistry (2023) 53:2185–2196, https://doi.org/10.1007/s10800-023-01912-0

7. Effect of TiO₂ nanofillers on ionic conductivity enhancement Mg (BH₄)₂:polyethylene oxide (PEO) polymer gel electrolyte, HNM Sarangika, HTG Shashintha, M Dissanayake, GKR Senadeera, Journal of Solid State Electrochemistry (2023), https://doi.org/10.1007/s10008-023-05748-8

8. Preparation of Electrospun Polyacrylonıtrile (PAN) Nanofıber Membrane Gel Electrolyte and Its Application in TiO₂-Based Electrochromic Devices, H.N.M. Sarangika, G.K.R. Senadeera, M.A.K.L. Dissanayake, Ionics (2024), DOI : 10.1007/s11581-024-05373-z. 
9. WO₃–TiO₂ nanostructured thin film prepared by in situ hydrothermal method as the sensing material for liquid petroleum gas (LPG) detection, HNM                 Sarangika, E Egodawaththa, G Aponsu, Journal of Materials Science: Materials in Electronics 35 (27), 1781, DOI: 10.1007/s10854-024-13553-w

10. Enhanced Photoelectrochemical performance by rapid electron transfer in reduced graphene oxide/CaWO4 composite photoanode, HNM Sarangika, E Egodawaththa, H Gunathilaka, VPS Perera, S Ghosh, C. Bhattacharya, Current Applied Physics 73 (2025) 22-29, https://doi.org/10.1016/j.cap.2025.02.006

Conference Proceedings- Published as a full paper

1. Novel quasi Solid-State Electrochromic Smart windows Based on TiO₂ and SnO₂ Electrode with PMMA gel electrolyte., H.N.M. Sarangika, G.K.R. Senadeera, C.A.Thotawaththage, M.A.K.L.Dissanayake , Solar Asia 2013 International Conference, University of Malaya, Kuala Lumpur, Malaysia.
2. Performances of TiO₂ as cathode material in rechargeable Mg batteries with Polyethylene oxide-based gel electrolyte, H.N.M. Sarangika, W.A.R.B. Weerasekera, G.K.R. Senadeera, M.A.K.L.Dissanayake, K.V.L. Amarasinghe, H.K.D.W.M.N. R. Divaratne, V.A. Seneviratna, 14^th Asian Conference on Solid State Ionics (ACSSI), Singapore, 24 – 27 June 2014.
3. Effect of different current collectors in Mg battery with conventional PEO based gel polymer electrolyte, Sarangika H.N.M., Dissanayake M.A.K.L., Senadeera G.K.R., Sampath J.A.K., Perera T.T.M., Solar Asia 2018 Int. Conf., National Institute of Fundamental Studies, Kandy, Sri Lanka (4-6 January 2018)

4. DEVELOPMENT OF LIQUID ELECTROLYTE AND THEIR APPLICATIONS IN ELECTROCHROMIC DEVICES, H. M. B. I. Gunathilaka, V.A.Seneviratne, H. N. M. Sarangika, 36th Technical Sessions, Institute of Physics, Sri Lanka (IPSL), 2020

5. Application of Electrospun Polyacrylonıtrıle (PAN) Nanofıbre Membrane Gel Electrolyte In TiO 2 based Electrochromic Devices, H.N.M. Sarangika, H. K. D. W. M. N. R. Divarathne, Lakshman Dissanayake, G.K.R. Senadeera, 4th International Conference on Inventive Research in Material Science and Technology (ICIRMST 2023), 20-21, January 2023, in RVS Technical Campus, Coimbatore, India.

Conference Proceedings- Published as an abstracts

1. Characteristics of Nano and Micro crystal CuO₂ thin films with solar cells., Fernando C.A.N., Sarangika H.N.M. , 3^rd Science Symposium, University of Ruhuna (2005).
2.  A preliminary study of Ozone column density over Sri Lanka using TOMs Satellite data., J.A.P. Bodhika, H.N.M. Sarangika , 3^rd International Symposium, Sabaragamuwa University of Sri Lanka. (2010). 
3. Comparison of Resistivity response of Vein Quartz in 1-D and 2-D Resistivity Techniques., S.M.N.Sethunga, H.N.M.Sarangika, Nalin De Silva, 14^th annual research session, Faculty of Applied Sciences, Sabaragamuwa university of Sri Lanka, 2010.
4. Use of carbon embedded TiO₂ as cathode material in rechargeable Mg batteries with Polyethylene Oxide-based gel electrolyte, H.N.M. Sarangika, W.A.R.B. Weerasekera, G.K.R. Senadeera, M.A.K.L. Dissanayake, K.V.L. Amarasinghe, C. A. Thotawattage, V.A. Seneviratne, Peradeniya University International Research Sessions 2014.
5. High performance dye-sensitized solar cells with PEO based gel polymer electrolyte using TiO₂ nanofibers developed by electrospinning, H.N.M. Sarangika, G.K.R. Senadeera, H.K.D.W.M.N. R. Divaratne_, P .M. P.C. Ekanayake, C.A. Thotawattage, M.A.K.L. Dissanayake, 14^th Asian Conference on Solid State Ionics (ACSSI), Singapore, 24 – 27 June 2014
6. Electrochromic smart windows based on Chitosan gel polymer electrolyte and Lithium salts, H.N.M.Sarangika, G.K.R. Senadeera, C. A. Thotawattage and M.A.K.L.Dissanayake, Postgraduate Institute of Science Congress 2014, University of Peradeniya.
7.  SnO₂ as a cathode material for solid-state magnesium batteries with polyethylene oxide-based gel polymer electrolyte. H.N.M. Sarangika, M.A.K.L. Dissanayake, G.K.R. Senadeera and C.A. Thotawattage,, Abstracts, Part II, Annual Research Sessions 2014, National Institute of Fundamental Studies, Kandy, Sri Lanka, p66. (7.1.2.4)
8. Electrospun polyacrylonitrile (PAN) nanofibre membrane gel electrolyte for electrochromic devices, H.N.M. Sarangika, G.K.R. Senadeera, H.K.D.W.M.N. R. Divaratne_, M.A.K.L. Dissanayake, International Conference on Material Science and Technology (ICMST), 13^th- 17^th October 2014 - Indonesia
9. SnO₂ as a cathode material for rechargeable Magnesium batteries, H.N.M. Sarangika, G.K.R. Senadeera, M.A.K.L. Dissanayake, K.V.L. Amarasinghe, C. A. Thotawattage, W.A.R.B. Weerasekera,V.A. Seneviratne, 2^nd Ruhuna International Science and Technology Conference (RISTCON) 22^nd-23^rd January 2015
10. Enhancement of Photoelectric Performance of Dye-Sensitized Solar Cells Made With Rice Grain-Shaped TiO₂ Nanostructure, H.K.D.W.M.N.R.Divaratne, H.N.M.Sarangika, M.A.K.L. Dissanayake, G.K.R.Senadeera, P.M.P.C.Ekanayake, C.A. Thotawattage, 5^th International Conference on Functional Materials & Devices 2015 (ICFMD - 2015) 4 – 6 August 2015, Johor Bahru, Malaysia.
11. TiO₂ as low cost, multi-functional material, M.A.K.L. Diasanayake, G.K.R. Senadeera , H.N.M. Sarangika, P.M.P.C. Ekanayake, C.A. Thotawattage, H.K.D.W.M.N.R. Divarathne, and J.M.K.W. Kumari, 5^th International Conference on Functional Materials & Devices 2015 (ICFMD - 2015) 4 – 6 August 2015, Johor Bahru, Malaysia.
12. Polyethylene oxide and ionic liquid-based solid polymer electrolyte for rechargeable Magnesium batteries., Sarangika H.N.M., Dissanayake M.A.K.L., Senadeera G.K.R., RathnayakeR.R.D.V., Pitawala H.M.J.C, Thotawattage C.A., 15^th Asian Conference on Solid State Ionics (ACSSI), India, 27 – 30 November 2016
13. Low cost, highly efficient TiO₂ based Electrochromic device for architectural application, H.N.M.Sarangika , G.K.R. Senadeera, M.A.K.L.Dissanayake, W.G.M.D.Karunarathna and M.G.A.N. Perera, 4^th Ruhuna International Science and Technology Conference (RISTCON) 26^th January, 2017
14. Electrolyte independent efficiency enhancement in dye-sensitized solar cells by composite TiO₂ photoanode with the rice-grain shaped nanostructure., H.N.M. Sarangika, M.A.K.L. Dissanayake, G.K.R. Senadeera, M.A. Careem, A.K.Arof, 6^th International Conference on Functional Materials & Devices 2017 (ICFMD - 2017) 15 – 18 August 2017, Malakka, Malaysia.
15. Low cost quasi solid-state electrochromic devices based on F-doped tin oxide and TiO₂., H.N.M. Sarangika, W.G.M.D.Karunarathna, M.A.K.L.Dissanayake, G.K.R. Senadeera, International Conference on Advanced Materials for Clean Energy and Health Applications (ICAMCEHA 2019), University of Jaffna.
16. Synthetic dyes as photosensitizers for dye-sensitized solar cells: A Preliminary study., H.N.M. Sarangika, J.P.I.B.R. Ruveshana, M.A.K.L. Dissanayake, G.K.R. Senadeera, International Research Conference of Uwa Wellassa University (IRCUWU 2019).
17. Development of liquid electrolyte and their applications in Electrochromic Devices., H. M. B. I. Gunathilaka, V. A.Seneviratne, H. N. M. Sarangika, 36^th Technical Sessions, Institute of Physics, Sri Lanka (IPSL), 2020
18. Gel polymer electrolytes based on fumed silica filler for magnesium batteries., H.T.G. Shashintha, H.N.M. Sarangika , V.P.S. Perera , M.A.K.L. Dissanayake , G.K.R. Senadeera , J.M.K.W. Kumari, National Conference on Multidiciplinary Research (NCMR-2020), 8th October 2020
19. Development of Non Polymer Gel Electrolyte and Their Applications on Electrochromic Devices., H. M. B. I. Gunathilaka , V. A. Seneviratne, H. N. M. Sarangika, Peradeniya University International Research Sessions 2021, Sri Lanka, Vol. 23, 11th & 12th November 2021

20. Development of PVP Based Electrolytes and Their Applications in Electrochromic Devices., H. M. B. I. Gunathilaka, V. A.Seneviratne, H. N. M. Sarangika, The 08^th International Conference of Sabaragamuwa University of Sri Lanka ICSUSL 2021 01^st – 03^rd Dec. 2021 Belihuloya, Sri Lanka

21. HYDROTHERMALY SYNTHESIZED NANOSTRUCTURED WO₃ THIN FILMS FOR ELECTROCHROMIC DEVICES, E.G.O.D Egodawaththa, H.N.M. Sarangika, V.P.S. Perera. J.A.D.M Dharmathilake, G.M.L.P. Aponsu, Applied Science Undergraduate Research Symposium, Sabaragamuwa University of Sri Lanka, 2023

22. Application of Electrospun Polyacrylonitrile (PAN)Nanofibre Membrane Gel Electrolyte in TiO₂ Based Electrochromic Devices, H.N.M. Sarangika, G.K.R. Senadeera, M.A.K.L. Dissanayake, H.K.D.W.M.N.R. Divaratne, International Conference on Inventive Research in Material Science and Technology (ICIRMT), 20-21 January 2023, Coimbatore, India

23. Enhancing Efficiency in Poly(Ethylene Oxide) Solid Polymer Electrolyte -based Dye-Sensitized Solar Cells: The Synergistic Effect
    of Plasticizers, Mixed Cations, and Nanofillers.
    M.A.K.L.Dissanayake , R.A.Jayarathna , G.K.R.Senadeera , J.M.K.W.Kumari , H.N.M. Sarangika, 18th Asian Conference on Solid State Ionics, Chennai, India

24. WO₃ Nanostructured Thin Films Prepared by In Situ Hydrothermal Method as a Low-cost, Multifunctional Material, H.N.M Sarangika, E.G.O.D Egodawaththa, H. M. B. I. Gunathilaka, M.A.K.L. Dissanayake, G.K.R. Senadeera Sangeeta Ghosh, Chinmoy Bhattacharya, 18th Asian Conference on Solid State Ionics, Chennai, India

25. Hydrothermally Assisted Synthesis and Characterization of Nanostructured WO₃ Thin Film for Photoelectrochemical (PEC) Applications, H.N.M Sarangika, E.G.O.D Egodawaththa, H. M. B. I. Gunathilaka, Sangeeta Ghosh, Chinmoy Bhattacharya, H.Y.R. Atapattu, G.M.L.P Aponsu, 18th Asian Conference on Solid State Ionics, Chennai, India

26. Synthesis of Reduced Graphene Oxide/CaWO₄ Composite Photoanode for Enhanced activity Towards Photoelectrochemical Water Splitting E.G.O.D. Egodawaththa, H.N.M. Sarangika, C. Bhattacharya, S.Ghosh, H. M. B. I. Gunathilaka, G.M.L.P.Aponsu, H.Y.R.Atapattu, In: 2nd International Conference on Frontiers in Chemical Technology 20 - 22 June, 2024, Colombo, Sri Lanka

27. Preapartion of WO₃/CaWO₄ composite film and its application in direct water splitting under solar radiation, N.P.L.P.Dharmarathna , H.N.M. Sarangika, E.G.O.D. Egodawaththa, H.B.B.I. Gunathilake, Undergraduate Research Symposium of Technology and 3rd Applied Science Undergraduate Research Symposium 2024 (URSTech & APSURS 2024)

28. Ionic Liquid Treated Non-Polymer Gel Electrolyte for Magnesium-ion Battery Application, N.P.L.P. Dharmarathna1, H.N.M. Sarangika, V.P.S. Perera, H.M.B.I.Gunathilaka and E.G.O.D. Egodawaththa, Peradenya University International Research Symposium And Exposition ,University Of Peradeniya, 29 ^th August 2024

1. Overseas Special Training Programme (OSTP) allowance, National Science Foundation, Sri Lanka 2015

2. Indo-Sri Lanka Joint Research Grant 2019

3. India Science and Research Fellowship (ISRF) 2022

4. Treasury Grant 2024/TG-24/247

1. Development of LiCl-based electrolytes and their applications in Electrochromic Devices (Completed 2017-2022), Postgraduate Institute of Science (PGIS), University of     Peradeniya

2. Natural Dye-Sensitized Solar Cell Using Mahogany Bark Pigments as Sensitizer, (2022-up to now), Postgraduate Institute of Science (PGIS), University of Peradeniya

1. Improving Communication skills in teaching situations program, faculty of science and the English Language Teaching Unit (ELTU), University of Ruhuna, Sri Lanka, 2005
2. Current Status and Future Trends in Thin Film Solar PV Technology, Institute of Fundamental Studies and National Science Foundation, Sri Lanka, 2012.
3. Scientific Writing, Postgraduate Institute of Science, University of Peradeniya, 2013.
4. BCVSPIN summer school in Particle Physics and Cosmology, Graduate University of Chinese Academy of Sciences (GUCAS), Beijing, China, 2009.
5. 2^nd International Conference on Solar Asia 2013, University of Malaya, Kuala Lumpur, Malaysia.
6. 14th Asian Conference on Solid State Ionics, National University of Singapore, Singapore, 2014.
7. Two months of research on Rechargeable Magnesium Batteries at the Center for Ionics, University of Malaya, Kuala Lumpur, Malaysia, November-December 2015.
8. Workshop on Psychological counseling conducted for the staff of Sabaragamuwa University of Sri Lanka organized by the Sri Lanka Foundation, 2016. 
9. Residential Workshop on Reforming the Practical Lessons, Internal Quality Assurance Cell (IQAC) of the Faculty of Applied Sciences, Sabaragamuwa University of Sri Lanka (2017).
10. Solar Asia 2018 International Conference, National Institute of Fundamental Studies, Kandy, Sri Lanka, 4-6 January 2018.
11. Workshop on Hands-on training on Advanced Scientific Instruments for Material Characterization at Materials Technology Section, Industrial Technology Institute (ITI), Colombo 07, 2019
12. Research Trainee in the Department of Chemistry, Indian Institute of Engineering Sciences and Technology (IIEST) under the India Science Research and Fellowship(ISRF) Sponsored by Indian National Science Acadamy, New Delhi 2023. 

Visiting Lectures

Faculty of Engineering Technology, The Open University of Sri Lanka. Course conducted: Foundation in Technology  CEX2312

1. Research Trainee in the Department of Chemistry, Indian Institute of Engineering Sciences and Technology (IIEST) under the India Science Research and Fellowship(ISRF) Sponsored by Indian National Science Acadamy, New Delhi 2023. 

Reviewer

International Journal

1. International Journal of Ionics The Science and Technology of Ionic Motion, Springer. (from 2017)

2. Journal of Advanced Research in Applied Sciences and Engineering Technology (2023) 

3. Journal of RECENT PATENT ON ENGINEERING 2023

4. International Journal of Research and Innovation in Applied Science (IJRIAS) 

5. Journal of Advances in Materials and Processing Technologies 

6. International Journal of Latest Technology in Engineering, Management & Applied Science(IJLTEMAS)

7.  International Journal of Applied Electrochemistry-Springer

8. Applied Physics A-Springer

9. Review Committee Member- Institute For Educational Research and Publication (IFERP)

International Conferences

1.  International Conference on Advanced Materials for Clean Energy and Health Applications (AMCEHA)-2019., University of Jaffna.

2.  10^th Annual Research Session of Sabaragamuwa University of Sri Lanka (ARS) 2018.

3. SLAAS Annual Sessions - 2020

4. The annual progress review of Ph.D. and M.Phil. Students of the Faculty of Natural Sciences, The Open University of Sri Lanka, 2021-2023

5. International Conference of Sabaragamuwa University of Sri Lanka (ICSUSL 2023)

6. The OPEN UNIVERSITY RESEARCH SESSIONS 2023 (OURS 2023)

7. International Conference on Applied Sciences - Sabaragamuwa University of Sri Lanka (ICAPS - SUSL) 2023

8. International Research Conference of the Open University of Sri Lanka 2024-IRC-OUSL 2024

9. The 3rd VINGNANAM International Research Conference 2024 (VRC-2024), University of Jaffna 

Panel Member

1. 2^nd International Research Symposium 2018 (IRSUWU), Uwa Wellassa University of Sri Lanka.

2. 8^th Annual Research Session of Sabaragamuwa University of Sri Lanka (ARS) 2018.

Examiner

1. M.Sc in Physics of materials, Postgraduate Institute of Science (PGIS), University of Peradeniya 2021

1.Student Counselor for the academic year 2009/2010, 2010/2011 and 2016/2017

2. Activity coordinator, AHEAD project, Department of Physical Sciences and Technology

3. Faculty coordinator, Newsletter of Sabaragamuwa University of Sri Lanka, 2019.

4. Member, Progress Monitoring Committee Faculty Building Complex of the Faculty of Applied Sciences Stage II

5. Member of the Task Force for Self Evaluation Report (SER) compilation for Program Review (PR) of the Faculty of Applied Sciences, 2020 (May 2019 to date)

6. Member of Laboratory Committee, Faculty of Applied Sciences 2019.

7. Faculty Coordinator, 8th ICSUSL conference 2021

8. Chair, Undergraduate Research Symposium of Technology and Applied Science Undergraduate Research Symposium (URSTech & APSURS 2024)

9. Chief Examiner, Advanced Level -Physics 2023

10. Chief Examiner, Advanced Level -Physics 2024