{"id":43,"date":"2023-03-23T17:32:52","date_gmt":"2023-03-23T17:32:52","guid":{"rendered":"https:\/\/sites.tntech.edu\/grulab\/?page_id=43"},"modified":"2026-09-14T14:49:44","modified_gmt":"2026-09-14T19:49:44","slug":"publications","status":"publish","type":"page","link":"https:\/\/sites.tntech.edu\/grulab\/publications\/","title":{"rendered":"Publications & Talks"},"content":{"rendered":"\n
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Key Publications<\/h2>\n\n\n\n

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\u2013Perot cavity spectrometer setup.” Rev. Sci. Instrum.<\/em> 97, 024704 (2026)<\/p>\n\n\n\n

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).<\/p>\n\n\n\n

R.M. Gurusinghe, N. Dias, R. Krueger, A. G. Suits. \u201cUniform supersonic flow sampling for detection by chirped-pulse rotational spectroscopy\u201d, J. Chem. Phys. 156, 014202 (2022).<\/p>\n\n\n\n

R.M. Gurusinghe, N. Dias, A. M. Mebel, A. G. Suits. \u201cRadical\u2013Radical Reaction Dynamics Probed Using Millimeterwave Spectroscopy: Propargyl + NH2\/ND2\u201d, J. Phys. Chem. Lett. 13, 91\u201397 (2022). <\/p>\n\n\n\n

R. M. Gurusinghe, A. Fox-Loe, M. J. Tubergen. \u201cStructures of guaiacol and the guaiacol-argon van der Waals complex from rotational spectroscopy of guaiacol isotopologues\u201d. J. Mol. Struct. 1246 (2021).<\/p>\n\n\n\n

R. M. Gurusinghe, M. J. Tubergen. \u201cProbing the Electronic Environment of Methylindoles using Internal Rotation and 14N Nuclear Quadrupole Coupling\u201d. J. Phys. Chem. A 2016, 120, 3491\u20133496 (2016).<\/p>\n\n\n\n

Talks<\/h2>\n\n\n\n

“Low barrier methyl internal rotation in 4-methylstyrene probed by high resolution FT microwave spectroscopy,” – Zachary<\/strong> (UG) at the International Symposium of Molecular Spectroscopy held at the University of Illinois Urbana-Champaign. June 2026.<\/p>\n\n\n\n

“A modular open-source GUI for control and automation of a cavity FTMW spectrometer,” – Trey <\/strong>(UG) at the International Symposium of Molecular Spectroscopy held at the University of Illinois Urbana-Champaign. June 2026.<\/p>\n\n\n\n

“L-FTMW Spectroscopy of Hydroxyl-Deuterated Furfuryl Alcohol: Conformations, Hydrogen Bonding, and Hyperfine Structure,” – Cadence<\/strong> (G) at the International Symposium of Molecular Spectroscopy held at the University of Illinois Urbana-Champaign. June 2026.<\/p>\n\n\n\n

“Automating Control in TN Tech’s custom-built Fourier transform microwave spectrometer using a python interface,” – Cadence<\/strong> (G) held at Pellissippi State Community College in Knoxville, Tennessee. November 2025.<\/p>\n\n\n\n

“Insights on the electronic and quantum tunneling effects in 8-methylquinoline via Fourier transform microwave spectroscopy,” – Cadence<\/strong> (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.<\/p>\n\n\n\n

“FTMW Spectroscopy of Methylquinolines: Tunneling and Electronic Effects” – Thusitha <\/strong>(G) at the International Symposium of Molecular Spectroscopy held at the University of Illinois Urbana-Champaign. June 2025.<\/p>\n\n\n\n

“Automating Control In The L-shaped FTMW Spectrometer Using A Python Interface” – Cadence <\/strong>(G) at the International Symposium of Molecular Spectroscopy held at the University of Illinois Urbana-Champaign. June 2025.<\/p>\n\n\n\n

\u201cL-Shaped FTMW Spectrometer With Narrowband And Broadband Capabilities Integrated With A Python Interface\u201d \u2013 Cadence<\/strong> (G) Environmental Science Colloquium at Tennessee Tech. April 2025. <\/p>\n\n\n\n

“Custom Python Code for Data Acquisition for TN Tech\u2019s New FTMW Cavity Spectrometer” – Cadence <\/strong>(G) at the XVI Conference of Young Researchers in Atomic and Molecular Physics held at the University of Valladolid, Spain. February 2025.<\/p>\n\n\n\n

\u201cUnraveling Hydrogen Bonding Competition: How Water Reshapes the Geometry of Guaiacol\u201d – Randi <\/strong>(G) at the Tennessee Academy of Science (TAS) held at the Lincoln Memorial University in Harrogate, Tennessee. November 2024.<\/p>\n\n\n\n

\u201cExploring Low Barrier Quantum Tunneling and Structural Planarity in 3-Methylstyrene Conformers\u201d – Cadence <\/strong>(G) at the Southeastern Regional Meeting of the American Chemical Society (SERMACS) held at AmericasMart Atlanta Convention Center in Atlanta, Georgia. October 2024.<\/p>\n\n\n\n

“Investigating the Quantum Tunneling Effects in the Low Barrier Case of cis-3-methylstyrene (cis-3MS)” – Cadence <\/strong>(G) at ISMS held at the University of Illinois Urbana-Champaign. June 2024.<\/p>\n\n\n\n

“Very Low Barrier Quantum Tunneling in the trans-conformer of 3-methylstyrene probed using FT-Microwave Spectroscopy” – Thusitha <\/strong>(G) ISMS held at the University of Illinois Urbana-Champaign. June 2024.<\/p>\n\n\n\n

“Advancements in the L-Shaped FT-Microwave Spectrometer with Cavity and Chirped Pulse Setups at Tennessee Tech” – Randi <\/strong>(G) ISMS held at the University of Illinois Urbana-Champaign. June 2024.<\/p>\n\n\n\n

“The New L-Shaped Fourier Transform Microwave Spectrometer” – Cadence<\/strong> (UG) at the Annual Meeting of the Tennessee Academy of Science (TAS) held at Rhodes College in Memphis, Tennessee. November 2023.<\/p>\n\n\n\n

“Development of a New L-Shaped FTMW Spectrometer with Cavity and Chirped Pulse Setups” – Rusiru<\/strong> (G) at ISMS held at the University of Illinois Urbana-Champaign. June 2023.<\/p>\n","protected":false},"excerpt":{"rendered":"

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\u2013Perot cavity spectrometer setup.” Rev. Sci. Instrum. 97, 024704 (2026) T. S. Jayasekara, C. Miller, D. Marasinghe, M. J. Carrillo, M. Swann, M. … Continue reading Publications & Talks<\/span><\/a><\/p>\n","protected":false},"author":173,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-43","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/sites.tntech.edu\/grulab\/wp-json\/wp\/v2\/pages\/43","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.tntech.edu\/grulab\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sites.tntech.edu\/grulab\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sites.tntech.edu\/grulab\/wp-json\/wp\/v2\/users\/173"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.tntech.edu\/grulab\/wp-json\/wp\/v2\/comments?post=43"}],"version-history":[{"count":8,"href":"https:\/\/sites.tntech.edu\/grulab\/wp-json\/wp\/v2\/pages\/43\/revisions"}],"predecessor-version":[{"id":1111,"href":"https:\/\/sites.tntech.edu\/grulab\/wp-json\/wp\/v2\/pages\/43\/revisions\/1111"}],"wp:attachment":[{"href":"https:\/\/sites.tntech.edu\/grulab\/wp-json\/wp\/v2\/media?parent=43"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}