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Browsing Physics by Title

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  • The critical specific heat of terbium 
    Jayasuriya, K.D.; Gopal, E.S.R.; Campbell, S.J.; Stewart, A.M. (Journal of Physics F: Metal Physics, 1983)
    Specific heat measurements have been carried out on a high-purity single crystal of terbium of mass 3.734 g between temperatures of 200 and 400K. The data around the Neel temperature TN, have been analysed in terms of the ...
  • The Interrelation Between the Potential Distribution and the Dark Charge Transfer Across n-TiO2 - Aqueous Electrolyte Interface 
    Tomkiewicz M; Siripala W (Symposia on Photoelectrochemical Process and Measurements Techniques for Photoelectrochemical Solar Cells, 1981)
  • The specific heat capacity of GE varnish (200-400K) 
    Jayasuriya, K.D.; Campbell, S.J.; Stewart, A.M. (Journal of Physics E: Scientific Instruments, 1982)
    The specific heat capacity of GE varnish, a commonly used adhesive and insulator, is found to vary linearly with temperature over the range 200-330K. The deviation of the heat capacity above this temperature is associated ...
  • The specific heat of samarium metal (80-400 K) 
    Jayasuriya, K.D.; Stewart, A.M.; Campbell, S.J. (Materials Chemistry and Physics, 1986)
    We have measured the specific heat of several high purity polycrystalline specimens of samarium metal over the temperature range 80 K to 400 K. A broad peak is observed at TNh ~106K, the temperature at which antiferromagnetic ...
  • Theoretical study of terahertz quantum well photodetectors: Effect of metallic diffraction coating 
    Hewageegana, P.; Apalkov, V. (Infrared Physics & Technology, 2008)
    The possibility of enhancement of sensitivity of quantum well photodetectors by adding metallic diffraction coating on top of the dielectric layer of photodetectors is studied. With the grating the spatial distribution of ...
  • Thermally Stimulated Current-Voltage Characteristics of Cu2O/CuxS Diode 
    Kalingamudali, S.R.D.; Siripala, W. (1988)
    A simple method was developed to fabricate a p-n junction diode of CU20/CuxS and it Was observed that the stability as well as the current-voltage characteristics of the diode could be improved significantly by controlling ...
  • Theta nulls of cyclic curves of small genus 
    Previato E; Shaska T; Wijesiri G S (Albanian J. Math., 2007)
    We study relations among the classical thetanulls of cyclic curves, namely curves X (of genus g(X)>1) with an automorphism ? such that ? generates a normal subgroup of the group G of automorphisms, and g(X???? )=0 .0. ...
  • Thetanulls of cyclic curves of genus 4 
    Wijesiri G S (Annual research symposium, FGS, University of Kelaniya, Kelaniya, 2013)
    Let ? be an irreducible smooth projective curve of genus g>1 defined over the complex field C. When the curve is hyperelliptic, the curve has extra automorphism ? and has an equation y^2=f(x), where x is an affine coordinate ...
  • Ti/Cu2O photoelectrodes in photlectrolytic solar cells 
    Wijesundera, R.P.; Susantha, P.K.K.; Jayakody, J.R.P.; Siripala, W. (proceedings of the Technical Session of Institute of Physics, Sri Lanka, 2003)
    Cuprous Oxide thin films deposited on Ti substrates were investigated as photoelectrodes in a photoelectrochemical cell. Electrodeposition was carried out in an electrochemical cell containing aqueous solutions of cupric ...
  • Trapping of an electron in coupled quantum dots in graphene 
    Hewageegana, P.; Apalkov, V. (Physical Review B, 2009)
    Due to Klein?s tunneling the electronic states of a quantum dot in graphene have finite widths and an electron in quantum dot has a finite trapping time. This property introduces a special type of interdot coupling in a ...
  • Tunable optoelectronic properties of CBD-CdS thin films via bath temperature alterations 
    Kumarage, W.G.C.; Wijesundera, R.P.; Seneviratne, V.A.; Jayalath, C.P.; Dassanayake, B.S. (2016)
    The tunability of the band-gap value and electron affinity of the n-CdS by adjusting the growth parameters is very important as it paves the way to improve the efficiency of CdS-based solar cells by adjusting the band ...
  • Two new siloxanic proton conducting membranes: Part II. Proton conductivity mechanism and NMR study 
    di Noto, V.; Vittadello, M.; Kalfan, A.N.; Greenbaum, S.G. (Electrochimica Acta, 2005)
    The synthesis and structural characterization of two types of membranes with formulas {Si(CH3)3O[Si(CH3)HO]21.26-[Si(CH3)((CH2)3SO3H)O]1.8-[Si(CH3)((CH2)3Si(CH3)2O-)-O]14-Si(CH3)3}n (A) and {Si(CH3)3O[Si(CH3)HO]21.26-[Si ...
  • Type Conversion of Electrodeposited Cuprous Oxide 
    Perera, L.D.R.D.; de Silva, K.T.L.; Siripala, W.; Jayanetti, J.K.D.S. (1996)
    Cuprous oxide is an inexpensive and non-toxic semiconductor material having a direct band gap of 2.0 eV. In view of its possible applications in low-cost solar energy converting devices thin films were fabricated and their ...
  • Use of Cu2O microcrystalline thin semiconductors for gas sensing 
    jayantha, P.A.P.; Perera, L.N.L.; Jayathileke, K.M.D.C.; Jayanetti, J.K.D.S.; Dissanayake, D.P.; Siripala, W. (Technical sess., Institute of Physics, Sri Lanka, 2009)
  • UV absorption properties of natural solutions 
    Wijesiri, W.D.S.; Jayatissa, N.W.K.; Jayakody, J.R.P. (2008)
    Electromagnetic radiation is classified into types according to the frequency of the waves such as radio waves, microwaves, terahertz radiation, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma ...
  • Vismitha Nano Thakshanaya (??????? ???? ???????) 
    Hewageegana, P. (2012)
  • Water splitting by electrodeposited cuprous oxide photoelectrodes with a flower like morphology 
    Ranasinghe J I; Siripala W (Annual Research Symposium-University of Kelaniya, 2011)
    Morphology of semiconductor films plays a major role in determining the efficiency of solar cell devices. Intrinsic electronic properties of cuprous oxide (Cu2O) are important for water splitting reaction using solar energy ...
  • Wave Motion and Sound 
    Jayakody, J.R.P. (2008)
  • XANES calibrations for the oxidation state of iron in a silicate glass 
    Jayasuriya, K.D.; Berry, A.J.; O?Neill, H.S.C.; Campbell, S.J.; Foran, G.J. (American Mineralogist, 2003)
    Fe K-edge X-ray absorption near edge structure (XANES) spectra were recorded for a series of anorthite-diopside eutectic glasses containing 1 wt% 57Fe2O3 quenched from melts equilibrated over a range of oxygen fugacities ...

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