Volume 42, 2026

Proceedings of the 42^nd Technical Sessions, March 2026, NPLT, Department of Physics, University of Colombo, Sri Lanka

Session I (0830-1000 hrs) – Session Chairman: Dr. R. C. L. De Silva

1. Analysis of Diurnal and Seasonal Variation of Lightning Activities over Sri Lanka’s Maritime Zones
U G D Maduranga, K K S N Britto, and C M Edirisinghe
Proceedings of the Technical Sessions, 42 (2026) 1-11

2. Preliminary Investigation of Atmospheric Muon Flux Detection in Sri Lanka and its Potential for Weather Prediction
S De Silva, S I Jayasinghe, D Wickramarathna, D U J Sonnadara, T Hettiarachchi, E H Mudiyanselage, A G U Perera, A Ashok, X He, and M K Jayananda
Proceedings of the Technical Sessions, 42 (2026) 12-19

3. Gate Oxide Scaling and High-k Dielectric Integration in Bulk MOSFETs: A Sentaurus TCAD Study
L S Sankalana, H V Ranasinghe, M K Jayananda, and L S Liyanage
Proceedings of the Technical Sessions, 42 (2026) 20-27

4. A Parametric Modeling and 3D Printing Workflow for Patient-Specific Orthopedic Forearm Casts
K W D I Mawilmada, M H T Uthpala, and G D Illeperuma
Proceedings of the Technical Sessions, 42 (2026) 28-36

5. Arm-Crossing Times and Orbital Dynamics in Simplified Spiral Galaxy Models
Y. L. Ramawickrama, P. A. A. Pererra, P. Hewageegana and S. Abdeen
Proceedings of the Technical Sessions, 42 (2026) 37-46

6. Synergistic Effects of MgO Passivation and CdS SILAR Cycle Optimization in TiO₂-Based Quantum Dot-Sensitized Solar Cells
J V P Fernando, V P S Perera, and N F Ajward
Proceedings of the Technical Sessions, 42 (2026) 47-61

Session II (1015 -1230 hrs) – Session Chairman: Professor Prof. C M Edirisinghe

7. Simulating Proton Synchrotron Acceleration and Proton–Proton Collision Dynamics in the CERN Accelerator Complex using Unity 3D
N Wickramage, K M Liyanage, K A S Lakshan, and D M C M K Dissanayake
Proceedings of the Technical Sessions, 42 (2026) 62-70

8. Analysis of Vertical Pitch Scaling and Channel Tapering Effects on the Program/Erase Characteristics of 3D NAND Flash Memory
H V Ranasinghe, L S Sankalana, S H R T Sooriyagoda, L S Liyanage
Proceedings of the Technical Sessions, 42 (2026) 71-80

9. End-to-End Simulation of Muon Scattering Tomography
R M I D Gamage, M Lagrange, K M Liyanage, N M Wickramage, and M D S N Yasodara
Proceedings of the Technical Sessions, 42 (2026) 81-89

10. Deep learning assisted identification of multi-layer graphene using optical microscopy
K H Wathukarawatte, B Abeysinghe, B Gunawardana, and C R Munasinghe
Proceedings of the Technical Sessions, 42 (2026) 90-95

11. Development of a fully inkjet printed antenna on polyethylene terephthalate for energy harvesting purposes in smart labelling
W A I B J Wickramasinghe, S W D K R M Manamendra, W L P K Wijesinghe, G C Wickramasinghe, and D L Weerawarne
Proceedings of the Technical Sessions, 42 (2026) 96-105

Session III (1300-1420 hrs) – Session Chairman: Professor V P S Perera

12. Investigation of micro-cracks configuration in inkjet-printed silver traces on polyethylene terephthalate substrates for flex sensors
W A C Perera, S W D K R M Manamendra, W L P K Wijesinghe, G C Wickramasinghe, and D L Weerawarne
Proceedings of the Technical Sessions, 42 (2026) 106-113

13. Diurnal and Seasonal Asymmetry in Urban Thermal Discomfort in Colombo, Sri Lanka: Evidence from Daytime and Nighttime THI Analysis (1988–2018)
S Chathuranga and K P S C Jayaratne
Proceedings of the Technical Sessions, 42 (2026) 114-121

14. Assessing the Suitability of NASA POWER Temperature Products for Filling Climatic Data Gaps in Sri Lanka
J K H Madushan, K P S C Jayaratne, and A L K Wijemannage
Proceedings of the Technical Sessions, 42 (2026) 122-132

15. Presidential Address 2026: The Role of Physicists in Shaping the Future of Higher Education Reforms in Sri Lanka
Prof. C. Mahesh Edirisinghe, President, Institute of Physics, Sri Lanka

Institute of Physics, Sri Lanka