Mid-infrared chalcogenide slot waveguide plasmonic resonator sensor embedded with Au nanorods for surface-enhanced infrared absorption spectroscopy

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dc.citation.articleNumber106005en_US
dc.citation.journalTitleResults in Physicsen_US
dc.citation.volumeNumber42en_US
dc.contributor.authorPi, Mingquanen_US
dc.contributor.authorZhao, Huanen_US
dc.contributor.authorLi, Chunguangen_US
dc.contributor.authorMin, Yutingen_US
dc.contributor.authorPeng, Zihangen_US
dc.contributor.authorJi, Jialinen_US
dc.contributor.authorHuang, Yijunen_US
dc.contributor.authorSong, Fangen_US
dc.contributor.authorLiang, Leien_US
dc.contributor.authorZhang, Yuen_US
dc.contributor.authorWang, Yidingen_US
dc.contributor.authorTittel, Frank K.en_US
dc.contributor.authorZheng, Chuantaoen_US
dc.date.accessioned2022-10-28T17:42:55Zen_US
dc.date.available2022-10-28T17:42:55Zen_US
dc.date.issued2022en_US
dc.description.abstractThe problem of a traditional waveguide plasmonic resonator sensor is that part of the near-field intensity enhanced area is confined in the waveguide dielectric layer, which decreases the interaction effect between light and analyte. In order to solve this problem, a novel mid-infrared (MIR) chalcogenide (ChG) slot waveguide plasmonic resonator (SWGPR) sensor embedded with Au nanorods was proposed, where Au nanorods were used as antenna for enhancing mode coupling with the waveguide through resonance at the absorption wavelength of the analyte. The antenna parameters were optimized to make the resonance wavelength align with the absorption wavelength of the analyte. The proposed waveguide structure provides a sufficient sensing area and increases the electric field enhancement factor to > 6400. Polymethyl methacrylate (PMMA) and styrene were adopted as the analyte for sensing performance evaluation. The normalized absorption reaches 23.31 when the maximum extinction coefficient of PMMA is 0.08, which is at least 7 times higher than other silicon-on-insulator (SOI) waveguide plasmonic resonator sensors. The proposed waveguide structure provides a new idea for the design of other waveguide plasmonic resonator sensors with high sensing performance and has the potential for biochemical sensing.en_US
dc.identifier.citationPi, Mingquan, Zhao, Huan, Li, Chunguang, et al.. "Mid-infrared chalcogenide slot waveguide plasmonic resonator sensor embedded with Au nanorods for surface-enhanced infrared absorption spectroscopy." <i>Results in Physics,</i> 42, (2022) Elsevier: https://doi.org/10.1016/j.rinp.2022.106005.en_US
dc.identifier.digital1-s2-0-S2211379722006192-mainen_US
dc.identifier.doihttps://doi.org/10.1016/j.rinp.2022.106005en_US
dc.identifier.urihttps://hdl.handle.net/1911/113754en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsThis is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)en_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/)en_US
dc.titleMid-infrared chalcogenide slot waveguide plasmonic resonator sensor embedded with Au nanorods for surface-enhanced infrared absorption spectroscopyen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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