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Department of Engineering Technology: Recent submissions

Now showing items 1-20 of 35

A Review on Novel Approaches to Enhance Sound Absorbing Performance Using Textile Fibers

Madushika, J.W.A.; Lanarolle, W.D.G. (Taylor & Francis, 2022)

Fibreglass, foam, mineral fibres and their composites are the conventional materials used in applica tions that require absorption of sound. However, due to the health risks associated with the traditional materials, textile ...
Mathematical Modeling and Simulation of Acoustic Properties of Knitted Fabrics Backed by an Air Cavity

Madushika, J.W.A.; Wijerathne, J.K.; Lanarolle, W.D.G. (Postgraduate Institute of Science (PGIS), University of Peradeniya, Sri Lanka, 2021)

Noise pollution has become a critical issue in the modern world of ever-increasing industries and machinery. Noise should be controlled due to the physical and psychological health effects associated with noise. Textiles ...
Development of a small-scale reverberation chamber and validation of the diffuse field

Madushika, J.W.A.; Wijerathne, J.K.; Lanarolle, W.D.G. (Young Scientists Forum (YSF), University of Moratuwa, 2023)

Noise absorbers are in a growing demand in the automotive, aerospace and building construction industries. Testing acoustic properties of materials is mandatory for developing an efficient acoustic controlling product ...
Prosthetic Heart Valves – "The Beat Goes On"

Weerarathne, K.K.D.C.S. (Department of Science and Technology, Faculty of Applied Sciences, Uva Wellassa University of Sri Lanka, 2020)
Study of the Use of Natural Pigments Extracted from Nephelium lappaceum (Rambutan) Peel and Melastoma malabathricum (Maha Bovitiya) Seeds as an Alternative to Synthetic Acid-Base Indicators

Weerarathne, K.K.D.C.S.; Samaraweera, R.L. (Uva Wellassa University Badulla, 90000 Sri Lanka, 2020)

Acid-base indicators are widely used for visual detection of the endpoint of an acid-base titration. Most of these indicators are organic dyes of synthetic origin. These are hazardous, expensive, and harmful to the ...
Design of a Barge for Small Scale Excavator in Narrow Canal

Manoj Kumara, J.L.R.; Lakmal Perera, H.S. (Associated Asia Research Foundation (AARF), 2020)

The Sri Lanka Land Reclamation and Development Corporation (SLLRDC) is a Government Corporation operating under the Ministry of Megapolis and Western Development, mainly involved in dredging of canals, canal maintenance, ...
Exploring the Ayurvedic Concept of Body Types and Their Relevance to Heart Rate Variability (HRV)

Madusankha, H.A.I.; Liyanage, D.L.C.P.; Amarakeerthi, S.; Sakunthala, H.S.; Premalal, E.V.A. (Springer, 2025)

Heart rate variability (HRV) is a significant physiological indicator of autonomic nervous activity and cardiovascular flexibility. Based on the psychological and physiological nature, all human individuals belong to three ...
"Lead-Free Mixed-Halide-Based Vacancy-Ordered Perovskites: Status and Opportunities in Optoelectronics"

Pabasara, W.G.A.; Sewvandi, G.A. (American Chemical Society (ACS), 2026)

Lead halide perovskites have delivered excellent efficiencies in optoelectronic devices owing to their strong light absorption and low-cost fabrication processes. However, toxicity and limited operational stability remain ...
Simulation-guided investigation of the effect of 2D perovskites on performances of 2D/3D mixed dimensional perovskite solar cells

Pabasara, W.G.A.; Akmal, U.K.D.M.; Sewvandi, G.A. (Elsevier Ltd., 2025)

2D/3D mixed-dimensional Perovskite Solar Cells (PSCs) have attracted a great interest of scientists due to their balanced efficiency and stability. A detailed parametric investigation on 2D/3D mixed-dimensional PSCs is ...
Exploring nontoxic perovskite materials for perovskite solar cells using machine learning

Pabasara, W.G.A.; Wijerathne, H.A.H.M.; Karunarathne, M.G.M.M.; Sandaru, D.M.C.; Abeygunawardhana, P.K.W.; Sewvandi, G.A. (Springer Nature, 2025)

Perovskite solar cells are promising renewable energy technology that faces significant challenges due to the Pb induced toxicity. The current study addresses this issue by leveraging machine learning techniques to explore ...
Extraction and characterization of bio-based polymeric materials from traditional rice varieties in Sri Lanka

Pabasara, W.G.A.; Nanayakkara, M.P.A.; Samarasekara, A.M.P.B.; Amarasinghe, D.A.S.; Karunanayake, L. (Faculty of Agriculture, University of Peradeniya, 2019)

Introduction of sustainable and environmentally friendly alternatives for petroleum chemical-based polymers have become one of the most challenging areas of research. Hence, this study addresses the issue by suggesting a ...
Interface Defect Layer Engineering for Realistic Modeling of 2D/3D Mixed Dimensional Perovskite Solar Cells

Pabasara, W.G.A.; Sewvandi, G.A. ("Complex System Research Centre, Niš, Serbia Mathematical Institute of the Serbian Academy of Sciences and Arts, Belgrade, Serbia", 2025)

This study focuses on a comprehensive investigation into the influence of interface defects on the performance of 2D/3D mixed-dimensional perovskite solar cells (PSCs). To address the limitations of the conventional Interface ...
HTL-Free 2D/3D Hybrid Perovskite Solar Cells: ETL Engineering and Simulation Insights

Pabasara, W.G.A.; Sewvandi, G.A. ("Complex System Research Centre, Niš, Serbia Mathematical Institute of the Serbian Academy of Sciences and Arts, Belgrade, Serbia", 2025)

The commercialization of PSCs is hindered by instability under heat, moisture, and UV, which is mitigated by 2D/3D hybrids that combine the stability of 2D and the efficiency of 3D perovskites. Despite improvements in ...
Numerical Investigation of MA₃Bi₂I₉-Based Lead-Free Perovskite Solar Cells: Impact of ETL Selection and Interface Band Alignment

Pabasara, W.G.A.; Sewvandi, G.A. (Springer Nature, 2025)

This study presents a comprehensive numerical investigation of leadfree perovskite solar cells (PSCs) employing methylammonium bismuth iodide (MA3Bi219) as the absorber material in an FTO/ETL/MA3Bi2I9/Cu2O/Ni device ...
Removal of Crystal Violet Dye in Textile Wastewater Using Rice Husk Biochar

Pabasara, W.G.A.; Premadasa, A.G.K.E.; Madushika, J.W.A. (Department of Forestry and Environmental Science, University of Sri Jayewardenepura, 2023)

Crystal Violet Dye (CVD) is a water-soluble, hazardous organic dye that causes adverse health issues and environmental pollution. This dye was mostly added to wastewater by the textile industries. Treatment of CVD-contained ...
Numerical Simulation and Optimization of Stable CH₃NH₃PbI₃-based 2D/3D Mixed Dimensional Perovskite Solar Cell

Pabasara, W.G.A.; Sewvandi, G.A. ("Complex System Research Centre, Niš, Serbia Mathematical Institute of the Serbian Academy of Sciences and Arts, Belgrade, Serbia", 2024)

Over the recent decades, solar power has gained significant attention globally as a sustainable and cost-effective source of energy outpacing other renewable energy alternatives. Perovskite Solar Cells (PSCs) have been ...
Utilization of Paddy Husk Carbon Black as an Alternative Filler Material in Rubber Industry

Pabasara, W.G.A.; Saputhanthree, A.; Weragoda, V.S.C. (IEEE, 2022)

Paddy husk (rice husk) is an abundant agricultural waste product in Sri Lanka. The utilization of paddy husk has drawn widespread attention worldwide. In this study, the main focus is to produce carbon black from the paddy ...
Numerical Simulation of Lead-free Bismuth Chalcohalide based Perovskite Solar Cells

Pabasara, W.G.A.; Akmal, U.K.D.M.; Wickramaarachchi, W.A.A.S.; Sewvandi, G.A. (IEEE, 2024)

Despite the remarkable advances and Power Conversion Efficiency (PCE) accomplished by perovskite solar cells (PSCs), they have been unable to catch the commercial market due to the toxicity caused by lead. Therefore, ...
Optimization of grid-connected solar PV systems with Hybrid Energy Storage System: A case study of the Sri Lankan power system

Ganege, H. C.; Chandima, D. P.; Karunadasa, J. P.; Wheeler, P. (Elsevier, 2025)

Abstract Greenhouse gas emissions from fossil fuel-based electricity generation significantly contribute to climate change. This research aims to mitigate these emissions by reducing reliance on fossil fuels and maximizing ...
Identify the Supra Harmonics in Low Voltage Distribution System Due to Photovoltaic Inverters

Ganege, H.C. (University of Ruhuna, Matara, Sri Lanka, 2021)

A significant amount of voltage and current distortion were detected in the power distribution system due to the problem of power system harmonics; it is the impact of the poor power quality. Over the past few decades, ...

Now showing items 1-20 of 35

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