Nanoimprint lithography-based fabrication of plasmonic array of elliptical nanoholes for dual-wavelength, dual-polarisation refractive index sensing

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dc.contributor.author Robinson, Caoimhe
dc.contributor.author Justice, John
dc.contributor.author Petäjä, Jarno
dc.contributor.author Karppinen, Mikko
dc.contributor.author Corbett, Brian M.
dc.contributor.author O'Riordan, Alan
dc.contributor.author Lovera, Pierre
dc.date.accessioned 2018-11-27T09:31:55Z
dc.date.available 2018-11-27T09:31:55Z
dc.date.issued 2018-11-10
dc.identifier.citation Robinson, C., Justice, J., Petäjä, J., Karppinen, M.,Corbett, B., O'Riordan, A. and Lovera, P. (2018) 'Nanoimprint lithography-based fabrication of plasmonic array of elliptical nanoholes for dual-wavelength, dual-polarisation refractive index sensing', Plasmonics. doi:10.1007/s11468-018-0879-z en
dc.identifier.startpage 1 en
dc.identifier.endpage 9 en
dc.identifier.issn 1557-1963
dc.identifier.uri http://hdl.handle.net/10468/7147
dc.identifier.doi 10.1007/s11468-018-0879-z
dc.description.abstract We report on the novel fabrication and characterisation of plasmonic arrays of elliptical nanohole, and their use for refractive index based sensing. The substrates were fabricated using nanoimprint lithography into a chromium hard mask followed by transfer of the patterns into the underlying gold layer by dry etching—a combination of processes amendable to mass manufacturing. 3D-FDTD simulations were undertaken and showed the transmission spectrum was dependant upon the polarisation of the incident light, with a series of minima that can be attributed to plasmonic effects on the gold/water or gold/substrate interfaces. Each polarisation showed two peaks on the gold/water interface, one in the visible and one in the near-infrared part of the spectrum. Simulated electric field profiles showed that the electric field in the infrared propagates deep in the bulk while the one in the visible was more tightly bound to the surface. Experimental transmission spectra of the fabricated samples showed good agreement with the simulated ones. Bulk refractive index experiments were carried out and sensitivities of 293 nm/RIU and 414 nm/RIU were obtained for the two spectral features of interest when the polarisation was along the long axis of the elliptical nanohole for the visible and infrared features, respectively, and 293 nm/RIU and 323 nm/RIU measured when the polarisation was along the short axis of the nanohole. en
dc.description.sponsorship Environmental Protection Agency (UisceSense 2015-W-MS-21) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Springer Nature Switzerland AG en
dc.rights © 2018, Springer Science+Business Media, LLC, part of Springer Nature. All rights reserved. The final publication is available at Springer via https://doi.org/10.1007/s11468-018-0879-z en
dc.subject Elliptical en
dc.subject Nanoimprint en
dc.subject Polarisation en
dc.subject Nanohole array en
dc.subject Plasmonics en
dc.title Nanoimprint lithography-based fabrication of plasmonic array of elliptical nanoholes for dual-wavelength, dual-polarisation refractive index sensing en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Pierre Lovera, Tyndall Micronano Electronics, University College Cork, Cork, Ireland. +353-21-490-3000 Email: p.lovera@tyndall.ie en
dc.internal.availability Full text available en
dc.check.info Access to this article is restricted until 12 months after publication by request of the publisher. en
dc.check.date 2019-11-10
dc.date.updated 2018-11-23T12:50:00Z
dc.description.version Accepted Version en
dc.internal.rssid 462946450
dc.contributor.funder Seventh Framework Programme en
dc.contributor.funder Environmental Protection Agency en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Plasmonics en
dc.internal.copyrightchecked Yes en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress p.lovera@tyndall.ie en
dc.internal.bibliocheck In press. Check for vol. / issue / page numbers. Amend citation as necessary.
dc.relation.project info:eu-repo/grantAgreement/EC/FP7::SP1::ICT/258238/EU/Robust, affordable photonic crystal sensors for point-of-care disease diagnostics/PHAST-ID en


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