Improving sensitivity of existing surface plasmon resonance systems with grating-coupled short-range surface plasmons

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dc.contributor.authorBabaei, Elham
dc.contributor.authorSharifi, Zoreh
dc.contributor.authorGordon, Reuven
dc.date.accessioned2023-04-27T18:06:52Z
dc.date.available2023-04-27T18:06:52Z
dc.date.copyright2019en_US
dc.date.issued2019-07-31
dc.description.abstractHere we show that surface plasmon resonance sensors that typically use 760 nm wavelength Kretschmann–Raether coupling to a 50 nm thick gold film can have 3 times higher surface sensitivity by using local resonances from periodically arranged short-range modes in the same configuration. Considering shot noise, the resolution was found to improve fourfold. This was calculated by matching the design wavelength and minimum angle as calculated by rigorous coupled wave analysis, giving a period of 250 nm in a 10 nm thick gold film and a gap length of 40 nm. Finite-difference time-domain simulations were used to confirm that the short-range modes correspond to localized surface plasmon resonances. The present short-range plasmon approach can be used to improve the sensitivity in monitoring biomolecule interactions.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThis work is supported by an NSERC Discovery Grant.en_US
dc.identifier.citationBabaei, E., Sharifi, Z., & Gordon, R. (2019). Improving sensitivity of existing surface plasmon resonance systems with grating-coupled short-range surface plasmons. Journal of the Optical Society of America B, 36(8), F144–F148. https://doi.org/10.1364/JOSAB.36.00F144en_US
dc.identifier.urihttps://doi.org/10.1364/JOSAB.36.00F144
dc.identifier.urihttp://hdl.handle.net/1828/15001
dc.language.isoenen_US
dc.publisherJournal of the Optical Society of America Ben_US
dc.subjectLight wavelengthen_US
dc.subjectLocalized surface plasmon resonanceen_US
dc.subjectSurface plasmon resonanceen_US
dc.subjectSurface plasmon resonance sensorsen_US
dc.subjectSurface plasmonsen_US
dc.subjectSurface wavesen_US
dc.titleImproving sensitivity of existing surface plasmon resonance systems with grating-coupled short-range surface plasmonsen_US
dc.typePostprinten_US

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