Dr. M. A. R. L. Samaraweera

Dr. M. A. R. L. Samaraweera

Senior Lecturer Gr II

Ph.D. in Physics (Georgia State University, Atlanta, Georgia, USA)
M.Phil. in Plysics (Post-Graduate Institute of Science, Peradeniya, Sri Lanka)
B.Sc. Hons in Physics, Chemistry and Mathematics (Peradeniya)
Email :rasanga@uwu.ac.lk
Phone : +94 553559113

  • Materials growth using Chemical Vapor Deposition (CVD) techniques (ex: Graphene)
  • Transport measurements of 2D systems
  • Photovoltaic materials and Solar cells
  • Electrochromic devices and materials

Wijewardena U.K. (2019). Effects of Long-Time Current Annealing to the Hysteresis in CVD Graphene on SiO2. MRS Advances, 1-8. DOI: 10.1557/adv.2019.366

Samaraweera R. L. (2019). Influence of microwave excitation power on the narrow negative magnetoresistance effect about B~0 T in the ultra-high mobility GaAs/AlGaAs 2DES. Physica Status Solidi B: 256 (6),1800610. DOI: 10.1002/pssb.201800610

Annika Kriisa (2019). Cyclotron resonance in the high mobility GaAs/AlGaAs 2D electron system over the microwave, mm-wave, and terahertz- bands. Scientific Reports (9) 2409, DOI:10.1038/s41598-019-39186-2

Samaraweera R. L. (2018). Coherent backscattering in quasi-ballistic ultra-high mobility GaAs/AlGaAs 2DES. Scientific Reports 8 (1)., DOI:10.1038/s41598-018-28359-0

Nanayakkara, T. R. (2018). Electron heating induced by microwave photoexcitation in the GaAs/AlGaAs two-dimensional electron system. Phys. Rev. B 98, 035304, DOI:10.1103/PhysRevB.98.035304

Munasinghe C. R. (2018). Electron heating induced by an ac-bias current in the regime of Shubnikov-de Haas oscillation in high mobility GaAs/AlGaAs two-dimensional electron system. Journal of Physics: Condensed Matter, DOI: 10.1088/1361-648X/aace34

Samaraweera R. L. (2017). Mutual influence between current-induced giant magnetoresistance and radiation-induced magnetoresistance oscillations in the GaAs/AlGaAs 2DES. Scientific Reports, 7(1)., DOI:10.1038/s41598-017-05351-8

Han-Chun Liu (2016). Angular phase shift in polarization-angle dependence of microwave-induced magnetoresistance oscillations. Physical Review B 94, (24), 245312; DOI:10.1103/PhysRevB.94245312

Zhuo Wang (2016). Tunable electron heating induced giant magnetoresistance in the high mobility GaAs/AlGaAs 2D electron system. Scientific Reports 6, 38516; DOI:10.1038/srep38516

Samaraweera R. L. (2007), K. A study of the use of plant pigments in dye-sensitized solar cells. Ceylon Journal of Sciences (Physical Sciences), 12, (51-56) (2007).

Ongoing research and projects:

Fabrication and characterization of graphene/graphite-based electrically conducting composite materials using natural graphite in Sri Lanka

Faculty coordinator-University Business Linkage (UBL) unit, Faculty of Applied Sciences, Uva Wellassa University of Sri Lanka (present)

Peer reviewer: Nature-Scientific Reports (since 2017), IOPscience-Nanotechnology (since 2018), Peer Review Journal of Solar & Photoenergy Systems (since 2018)

President: Sri Lankan Student Association at Georgia State University, (ISAC)-GSU, Atlanta, USA. (2017-2018)

Vice President: Physics Graduate Student Association -PGSA, Department of Physics and Astronomy, GSU, Atlanta, USA. (2016-2017)

Member-American Physical Society (Since 2015)

Member-American Vacuum Society (Since 2013)

Joseph H Hadley Outstanding Advanced Graduate Student in Physics- Dept. of Physics and Astronomy, GSU, USA, (2017/2018).

Best Speaker award: PGSA Conference-Fall 2016, Department of Physics and Astronomy, Georgia State University, USA, (2016).

  • SCT 251-2   Electricity and Magnetism
  • SCT 252-1   Basic Electronics
  • SCT 107-1   Basic Physics