Key Publications
R. P. H. Rajapaksha, C. Miller, R. K. Padikoralage, T. S. Jayasekara, M. Swann, M. Kidder, R. M. Gurusinghe. “Design and performance of an L-shaped Fourier transform microwave spectrometer (L-FTMW): Fabry–Perot cavity spectrometer setup.” Rev. Sci. Instrum. 97, 024704 (2026)
T. S. Jayasekara, C. Miller, D. Marasinghe, M. J. Carrillo, M. Swann, M. J. Tubergen, I. Kleiner, and R. M. Gurusinghe. “Exploring low barrier quantum tunneling and structural planarity in 3-methylstyrene conformers: Insights from microwave spectroscopy”, J. Chem. Phys. 162, 044303 (2025).
R.M. Gurusinghe, N. Dias, R. Krueger, A. G. Suits. “Uniform supersonic flow sampling for detection by chirped-pulse rotational spectroscopy”, J. Chem. Phys. 156, 014202 (2022).
R.M. Gurusinghe, N. Dias, A. M. Mebel, A. G. Suits. “Radical–Radical Reaction Dynamics Probed Using Millimeterwave Spectroscopy: Propargyl + NH2/ND2”, J. Phys. Chem. Lett. 13, 91–97 (2022).
R. M. Gurusinghe, A. Fox-Loe, M. J. Tubergen. “Structures of guaiacol and the guaiacol-argon van der Waals complex from rotational spectroscopy of guaiacol isotopologues”. J. Mol. Struct. 1246 (2021).
R. M. Gurusinghe, M. J. Tubergen. “Probing the Electronic Environment of Methylindoles using Internal Rotation and 14N Nuclear Quadrupole Coupling”. J. Phys. Chem. A 2016, 120, 3491–3496 (2016).
Talks
“Low barrier methyl internal rotation in 4-methylstyrene probed by high resolution FT microwave spectroscopy,” – Zachary (UG) at the International Symposium of Molecular Spectroscopy held at the University of Illinois Urbana-Champaign. June 2026.
“A modular open-source GUI for control and automation of a cavity FTMW spectrometer,” – Trey (UG) at the International Symposium of Molecular Spectroscopy held at the University of Illinois Urbana-Champaign. June 2026.
“L-FTMW Spectroscopy of Hydroxyl-Deuterated Furfuryl Alcohol: Conformations, Hydrogen Bonding, and Hyperfine Structure,” – Cadence (G) at the International Symposium of Molecular Spectroscopy held at the University of Illinois Urbana-Champaign. June 2026.
“Automating Control in TN Tech’s custom-built Fourier transform microwave spectrometer using a python interface,” – Cadence (G) held at Pellissippi State Community College in Knoxville, Tennessee. November 2025.
“Insights on the electronic and quantum tunneling effects in 8-methylquinoline via Fourier transform microwave spectroscopy,” – Cadence (G) at the Southeastern Regional Meeting of the American Chemical Society (SERMACS) held at the DoubleTree by Hilton Orlando at SeaWorld Orlando, Florida. October 2025.
“FTMW Spectroscopy of Methylquinolines: Tunneling and Electronic Effects” – Thusitha (G) at the International Symposium of Molecular Spectroscopy held at the University of Illinois Urbana-Champaign. June 2025.
“Automating Control In The L-shaped FTMW Spectrometer Using A Python Interface” – Cadence (G) at the International Symposium of Molecular Spectroscopy held at the University of Illinois Urbana-Champaign. June 2025.
“L-Shaped FTMW Spectrometer With Narrowband And Broadband Capabilities Integrated With A Python Interface” – Cadence (G) Environmental Science Colloquium at Tennessee Tech. April 2025.
“Custom Python Code for Data Acquisition for TN Tech’s New FTMW Cavity Spectrometer” – Cadence (G) at the XVI Conference of Young Researchers in Atomic and Molecular Physics held at the University of Valladolid, Spain. February 2025.
“Unraveling Hydrogen Bonding Competition: How Water Reshapes the Geometry of Guaiacol” – Randi (G) at the Tennessee Academy of Science (TAS) held at the Lincoln Memorial University in Harrogate, Tennessee. November 2024.
“Exploring Low Barrier Quantum Tunneling and Structural Planarity in 3-Methylstyrene Conformers” – Cadence (G) at the Southeastern Regional Meeting of the American Chemical Society (SERMACS) held at AmericasMart Atlanta Convention Center in Atlanta, Georgia. October 2024.
“Investigating the Quantum Tunneling Effects in the Low Barrier Case of cis-3-methylstyrene (cis-3MS)” – Cadence (G) at ISMS held at the University of Illinois Urbana-Champaign. June 2024.
“Very Low Barrier Quantum Tunneling in the trans-conformer of 3-methylstyrene probed using FT-Microwave Spectroscopy” – Thusitha (G) ISMS held at the University of Illinois Urbana-Champaign. June 2024.
“Advancements in the L-Shaped FT-Microwave Spectrometer with Cavity and Chirped Pulse Setups at Tennessee Tech” – Randi (G) ISMS held at the University of Illinois Urbana-Champaign. June 2024.
“The New L-Shaped Fourier Transform Microwave Spectrometer” – Cadence (UG) at the Annual Meeting of the Tennessee Academy of Science (TAS) held at Rhodes College in Memphis, Tennessee. November 2023.
“Development of a New L-Shaped FTMW Spectrometer with Cavity and Chirped Pulse Setups” – Rusiru (G) at ISMS held at the University of Illinois Urbana-Champaign. June 2023.