Plasmonic modes in cylindrical nanoparticles and dimers
dc.contributor.author | Downing, CA | |
dc.contributor.author | Weick, G | |
dc.date.accessioned | 2021-01-12T08:10:02Z | |
dc.date.issued | 2020-12-16 | |
dc.description.abstract | We present analytical expressions for the resonance frequencies of the plasmonic modes hosted in a cylindrical nanoparticle within the quasi-static approximation. Our theoretical model gives us access to both the longitudinally and transversally polarized dipolar modes for a metallic cylinder with an arbitrary aspect ratio, which allows us to capture the physics of both plasmonic nanodisks and nanowires. We also calculate quantum mechanical corrections to these resonance frequencies due to the spill-out effect, which is of relevance for cylinders with nanometric dimensions. We go on to consider the coupling of localized surface plasmons in a dimer of cylindrical nanoparticles, which leads to collective plasmonic excitations. We extend our theoretical formalism to construct an analytical model of the dimer, describing the evolution with the inter-nanoparticle separation of the resultant bright and dark collective modes. We comment on the renormalization of the coupled mode frequencies due to the spill-out effect, and discuss some methods of experimental detection. | en_GB |
dc.description.sponsorship | Agence Nationale de la Recherche | en_GB |
dc.description.sponsorship | Royal Society | en_GB |
dc.description.sponsorship | Juan de la Cierva programme (MINECO, Spain) | en_GB |
dc.description.sponsorship | University of Strasbourg IdEx programme | en_GB |
dc.identifier.citation | Vol. 476 (2244), article 20200530 | en_GB |
dc.identifier.doi | 10.1098/rspa.2020.0530 | |
dc.identifier.grantnumber | ANR-14-CE26-0005 Q-MetaMat | en_GB |
dc.identifier.grantnumber | URF/R1/201158 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/124363 | |
dc.language.iso | en | en_GB |
dc.publisher | Royal Society | en_GB |
dc.rights | © 2020 The Author(s). Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. | en_GB |
dc.subject | nanoplasmonics | en_GB |
dc.subject | nanoparticles | en_GB |
dc.subject | dimers | en_GB |
dc.subject | quantum-size effects | en_GB |
dc.title | Plasmonic modes in cylindrical nanoparticles and dimers | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2021-01-12T08:10:02Z | |
dc.identifier.issn | 1364-5021 | |
exeter.article-number | ARTN 20200530 | en_GB |
dc.description | This is the final version. Available on open access from the Royal Society via the DOI in this record. | en_GB |
dc.identifier.journal | Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en_GB |
dcterms.dateAccepted | 2020-11-16 | |
rioxxterms.version | VoR | en_GB |
rioxxterms.licenseref.startdate | 2020-11-16 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2021-01-12T07:52:36Z | |
refterms.versionFCD | VoR | |
refterms.dateFOA | 2021-01-12T08:10:09Z | |
refterms.panel | B | en_GB |
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Except where otherwise noted, this item's licence is described as © 2020 The Author(s). Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.