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

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dc.citation.articleNumber106005
dc.citation.journalTitleResults in Physics
dc.citation.volumeNumber42
dc.contributor.authorPi, Mingquan
dc.contributor.authorZhao, Huan
dc.contributor.authorLi, Chunguang
dc.contributor.authorMin, Yuting
dc.contributor.authorPeng, Zihang
dc.contributor.authorJi, Jialin
dc.contributor.authorHuang, Yijun
dc.contributor.authorSong, Fang
dc.contributor.authorLiang, Lei
dc.contributor.authorZhang, Yu
dc.contributor.authorWang, Yiding
dc.contributor.authorTittel, Frank K.
dc.contributor.authorZheng, Chuantao
dc.date.accessioned2022-10-28T17:42:55Z
dc.date.available2022-10-28T17:42:55Z
dc.date.issued2022
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.
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.
dc.identifier.digital1-s2-0-S2211379722006192-main
dc.identifier.doihttps://doi.org/10.1016/j.rinp.2022.106005
dc.identifier.urihttps://hdl.handle.net/1911/113754
dc.language.isoeng
dc.publisherElsevier
dc.rightsThis is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/)
dc.titleMid-infrared chalcogenide slot waveguide plasmonic resonator sensor embedded with Au nanorods for surface-enhanced infrared absorption spectroscopy
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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