Physics Society 2021: Recent submissions

  • Sintering properties and development of ternary ZnAl2O3 phase in Al2O3 - ZnO composite ceramics 
    Sriyananda, I.B.P.B.; Thanihaichelvan, M. (University of Jaffna, 2021)
    Zinc doped aluminium oxide (ZnAl2O3) is a wide bandgap semiconducting material with optical transparency. The wideband gap of 3.6 eV makes it as an interesting material in several applications like gas and chemical sensors ...
  • Suitable shielding material for external beam therapy 
    Dissanayake, D. M. B. Y.; Pathmathas, T.; Ramalingam, A. (University of Jaffna, 2021)
    In radiological procedures radiation shielding apparel must protect the patients and medical personnel from unnecessary exposures. Primarily conventional radiation shielding apparel is constructed from lead impregnated ...
  • Sound level measurement and the setback distance of the wind turbine 
    Rajapaksha, M.P.D.S.; Thevakaran, A. (University of Jaffna, 2021)
    Harnessing energy from the wind is the sustainable alternative method to produce electricity. However, while having positive environmental impacts such as reduced carbon emission, environmental pollution, and water ...
  • Smart cap as an electronic travel aid for visually impaired person 
    Premadasa, D. K. M. S. A.; Dissanayaka, D. M. A. S.; Wimalarathne, A. W. G. N. M.; Hemachandra, W. G. S. M.; Gunawardhane, W. A. T. N.; Kodikara, M. M. P. S.; Loheeswaran, S. (University of Jaffna, 2021)
    This research aimed to develop an ultrasonic sensor based smart cap as an electronic travel aid to improve the safe self-movement of the visually impaired persons. This smart cap provides the audible and mechanical vibration ...
  • Sintering properties of ZnO-TiO2 composite ceramics 
    Kopiha, V.; Sutharsini, U. (University of Jaffna, 2021)
    Among various semiconductor oxides, ZnO and TiO2 composite have been used wide variety of applications such as solar cells, varistors, and sensors. In this work effect of sintering temperature and sintering time on ZnO - ...
  • Sintering properties of sputtered ZnO Thin Films 
    Kirusanthy, S.; Sutharsini, U. (University of Jaffna, 2021)
    Zinc oxide (ZnO) thin films have performed as an attractive material for numerous applications in piezoelectricity, solar cells, biomedical and sensing. In this work, sintering properties of sputter coated Zinc oxide thin ...
  • Rice husk ash as partial substitute for sand in cement bricks 
    Anupama, G.G.; Nandasiri, K.P.S.D.; Thanihaichelvan, M. (University of Jaffna, 2021)
    Cost of the construction materials are increasing due to rapid growth of industry and demand. As a result, waste utilization has been one of the most vital aspects in the construction industry towards sustainability [1,2]. ...
  • Production of biodiesel from locally available Pumpkin seeds: A comparison with coconut oil 
    Jayathilaka, W. D. D. R; Yohi, S. (University of Jaffna, 2021)
    Petroleum based economy is suffering from a series of problems like enhanced greenhouse effect and global warming. Burning of fossil fuel causes accumulation of the greenhouse gases in the environment that leads to enhanced ...
  • Piezoelectric buzzers for energy harvesting 
    Vishvarooban, V.; Rishanthan, K.M.T.M; Leelananda, B.H.; Shanika, D.I.; Madushan, W.G.P.C.; Abayarathna, V.; Kanan, H.S.; Paranthaman, S.; Loheeswaran, S. (University of Jaffna, 2021)
    The energy generating devices are capable of capturing environmental energy and supplanting the battery in a stand-alone module or working alone with the battery to extend substantially its life. Piezo electric and ...
  • Mutations observed in selected SARS-CoV-2 isolates 
    Kugathasan, D.; Aruldchelvan, K.; Jeyaseelan, T.C.; Emmanuel, C.J (University of Jaffna, 2021)
    Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a single-stranded positive RNA virus. The virus genome is ~ 29.9 Kb in size and comprises 14 open reading frames, which encodes for 27 different proteins. The ...
  • Moderation of indoor humidity and temperature using automated motorized window opening and closing system 
    Hewage, G.N.; Wickramaarachchi, A.K.; Arulkumaran, P.; Priyanka, Y.; Cassim, C.D.; Rodrigo, K.; Thenmolie; Loheeswaran, S. (University of Jaffna, 2021)
    Thermal comfort and indoor air quality are essential for living in a healthy environment. In this work, based on the assessment of comfortable environmental conditions such as an in-door temperature and humidity in a ...
  • Isolation and identification of Bacillus species present in the Panchagavya preparations 
    Donaldson, E; Emmanuel, C.J. (University of Jaffna, 2021)
    Panchagavya has been popularly used in organic farming to promote plant growth and control various pests and diseases. During the preparation of Panchagavya, a mixture of five cow products and sugar sources such as jaggery, ...
  • Inspection of thermal conductivity of natural fiber reinforced composites (NFCs) 
    Kulasooriya, K.A.C.P.; Amarathunga, H.M.N.M.; Perera, W.K.S.F.R; Thanihaichelvan, T. (University of Jaffna, 2021)
    chemical properties, which exhibit enhanced properties than the constituent materials. Thermal insulation composite materials, especially those reinforced with synthetic fibers releases huge amount of CO2 to the environment ...
  • Hydrothermal ageing study on two step sintered 3Y-TZP ceramic 
    Praveena, S.; Sutharsini, U. (University of Jaffna, 2021)
    In this study, Hydrothermal ageing resistance of two step sintered 3 mol. % Yittria stabilized tetragonal zirconia polycrystalline (3Y-TZP) ceramic was analysed. 3Y-TZP ceramic powder was die pressed followed by cold ...
  • Facile fabrication of nitrogen-doped Titanium dioxide-based dye-sensitized solar cells 
    Gurunanthanan, V.; Rajaramanan, T.; Velauthapillai, D.; Ravirajan, P.; Senthilnanthanan, M. (University of Jaffna, 2021)
    Titanium dioxide (TiO2) is a commonly used semiconductor in Dye-Sensitized Solar cells (DSSCs) as it is inexpensive, abundant and innocuous to the environment. However, lack of response to the visible light and slow electron ...
  • Evaluating doses calculated using TRS 398 and TRS 277 protocols 
    Harindrinee, S.; Pathmathas, T.; Ramalingam, A. (University of Jaffna, 2021)
    Protocols, considered as guidelines in Medical Physics, admit the safety measures and effective practices in diagnostic and therapeutic radiology. The changes of the beam calibration due to adaption of the TRS-398 protocol ...
  • Effect of Nickel doping in P3HT hole transporting material on the performance of perovskite solar cells 
    Risendiralingam, R.; Uthayaraj, S.; Yohi, S.; Thanihaichelvan, M.; Velauthappillai, D.; Ravirajan, P. (University of Jaffna, 2021)
    Perovskite solar cell (PSC) has intensively been focused on improving their efficiencies and stability for commercialisation. Various hole transporting materials (HTMs) have been reported in enhancing the performance of ...
  • Design and Improving the Mechanical performance of Dual axis Solar Tracker using LDR Sensors 
    Alfred Milroy, K.; Kirushiga, V.; Sulakkhana, L.N.; Gowsikan, K.; Roczan, A.H.; Wanigasooriya, W. A. D. C. J.; Kodikara, M. M. P. S.; Thenmolie, S.; Loheeswaran, S (University of Jaffna, 2021)
    A solar tracking system which carries solar panels, maximizes the solar electricity production by moving panels to follow the sun throughout the day. In this work, a small solar tracking system was developed by using Arduino ...
  • Design and feasibility study of parabolic trough concentrated solar power water heater for domestic use in Sri Lanka 
    Kanayaka, E.M.D.M.; Senthuran, K.; Somajayan, D.P.; Piyasena, K.; Vignarooban, K.; Senthuran, A.; Thevakaran, A.; Ravirajan, P. (University of Jaffna, 2021)
    Concentrated Solar Power (CSP) systems are becoming popular in recent days for electricity generation, especially in the United States and Spain. Parabolic trough CSP systems can also be designed as a water heater by fixing ...
  • Defects and dopants in Anorthite (CaAl2Si2O8) 
    Suthaharan, S.; Iyngaran, P.; Kuganathan, N (University of Jaffna, 2021)
    Calcium aluminosilicate, CaAl2Si2O8, is a promising economically important ceramic material that has found applications in several areas, such as glass production and petrology [1-2]. Atomistic scale simulation techniques ...