Department of Physics - Professor H H Sumathipala

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phys@kln.ac.lk
Mon - Fri 8:00 - 16:00

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Professor H H Sumathipala

Professor H H SumathipalaBSc (Kelaniya), PhD (Peradeniya), CPhys, FIP (SL)
Senior Professor

Specialized Field	:	Solid State Physics
Email Address	:	sumathi@kln.ac.lk
Telephone No	:	+94 (0)11 2 903 349 (ext: 349)
		+94 (0)33 2 263 503 (Residence)
Office Location	:	B1 217/1
Teaching	:	Condensed Matter Physics
		Thermodynamics

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Research Interests

Solid Electrolytes

Compose Polymer Electrolytes

Physics Education

Selected Publications

A.D. Maduranga, H.H. Sumathipala and N.W.K. Jayatissa, *Investigating the Thermal Efficiency of Thermo-foils as a Roof Insulation Material, 27th* Tech. Sess. Inst. Phys., Sri Lanka (2011) S Panero, B Scrosati, HH Sumathipala and W Wieczorek, *Dual-Composit Polymer Electrolytes with Enhanced Transport Properties, J. Power Sources 167, pp.* 510-514 (2007) HH Sumathipala,*Web Enabled Simulations for Physics Education,* Seminar on Computer Assisted Learning, The National Institute of Education, Sri Lanka (2003) HH Sumathipala, *Computer Simulation for Tertiary Level Physics Education,Proc. 19^thTech. Sess. Inst. Phys., Sri Lanka (2003) HH Sumathipala, Macromedia Director Technology for Physics Education: Electrostatic Simulator for AL Physics, UNESCO-ASPEN Regional Wkshp on Active Leaning in Physics, 2-5 December, Sri Lanka (2002) HH Sumathipala, MAKL Dissanayake and AR West, Novel LISICON Mixed Conductors, Li_4-2xCo_xGeO₄,* Solid State Ionics 86/88, pp. 719 (1996) HH Sumathipala, MAKL Dissanayake and AR West, *Novel LISICON Type Mixed Conductors,Proc. Fifth* Asian Conference on Solid State Ionics, Sri Lanka, pp. 335 (1996) MAKL Dissanayake, RP Gunawardane, HH Sumathipala and AR West, *New Solid Electrolytes and Mixed Conductors: Li_3+xCr_1-xM_xO₄: M=Ge, Ti, Solid State Ionics 76, pp. 215 (1995) HH Sumathipala, MAKL Dissanayake and AR West, Novel Li⁺* *Ion Conductors and Mixed coductors, Li_3+xSi_xCr_1-xO₄and a Simple Method for Estimating Li₊/e_-* *Transport Numbers, J. Electrochem. Soc. 142, pp.* 2138 (1995) HH Sumathipala, MAKL Dissanayake, MA Careem and PWSK Bandaranayake, *Ionic Conductivity of the Na₂SO₄-Na₂WO₄* *System, Ceylon J. Science: Physical Sciences, 2(1), pp. 30 (1995) WA Samantha, MAKL Dissanayake, PWSK Bandaranayake, MA Careem, HH Sumathipala, LRAK Bandara and RLN Chandrakanthi, Charge/discharge characteristics of solid state batteries based on solid polymer electrolyte (PEO)₉* *LiCF₃SO₃,Proc. 51^st* Annual Sess., SLAAS, p. 354 (1995) MAKL Dissanayake, RP Gunawardane, HH Sumathipala, GKR. Senadeera, PWSK Bandaranayake, MA Careem and AR West, *Lithium Ion Conductivity in The Li_xXO₄-Li₂SO₄(X=Si,Ge,Ti) Systems, Proc. Fourth* Asian Conference on Solid State Ionics, Malaysia, pp. 199 (1994) MAKL Dissanayake, HH Sumathipala and AR West, *New Li⁺* *Ion Conductors Li_4-2xTi_1-xS_xO₄, based on the Li₄TiO₄* *structure, J. Mat. Chem. 4, pp. 1075 (1994) MAKL Dissanayake, S Garcia-Martin, R Saez-Puche, HH Sumathipala and AR West,Synthesis and Properties of a New Polymorph of Li₃CrO₄, J. Mat. Chem. 4, pp. 1307 (1994) HH Sumathipala, MA Careem, RP Gunawardane and MAKL Dissanayake, New Li⁺* *Ion Conductors of LISICON Type, Li_4-2xCo_xGeO₄Solid Solutions,* Proc. 50^th Annual Sess., SLAAS, p. 197 (1994) HH Sumathipala, TMTN Tennakoon, MA Careem and MAKL Dissanayake, *Use of Complex Electric Modulus for Impedance data Analysis: Electrical Conductivity of Li₂MnO₃,Proc.15^th Annual Research Symp. 1994, University of Peradeniya (1994) HH Sumathipala, MA Careem, RP Gunawardane and MAKL Dissanayake, Litium Ion Conductivity in the Li_3.4X_0.3GeO₄: X=Zn,Mg,Co Compounds,Proc. 15^th* Annual Research Symp. 1994, University of Peradeniya (1994) MAKL Dissanayake, PWSK Bandaranayake, MA Careem and HH Sumathipala, *Ionic Conductivity of the Na₂SO₄-Na₂WO₄* *System, Proc. Third* Asian Conference on Solid State Ionics, India, C10 (1992) PWSK Bandaranayake, MAKL Dissanayake, MA Careem and HH Sumathipala, *Electrical Conductivity Variation of Na₂SO₄* *(I) Solid Solutions with Concentration of Na₂WO₄,Proc. 48^th* Annual Sess., SLAAS, p. 109 (1992)