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Designing collective non-local responses of metasurfaces

dc.contributor.authorCapers, JR
dc.contributor.authorBoyes, SJ
dc.contributor.authorHibbins, AP
dc.contributor.authorHorsley, SAR
dc.date.accessioned2021-09-22T09:18:00Z
dc.date.issued2021-09-16
dc.description.abstractWe propose a numerically efficient `adjoint' inverse design method to optimize a planar structure of dipole scatterers, to manipulate the radiation from an electric dipole emitter. Several examples are presented: modification of the near-field to provide a 3 fold enhancement in power emission; re-structuring the far-field radiation pattern to exhibit chosen directivity; and the design of a discrete `Luneburg lens'. Additionally, we develop a clear physical interpretation of the optimized structure, by extracting `eigen-polarizabilities' of the system. We find that large `eigen-polarizability' corresponds to a large collective response of the scatterers. This framework may find utility in wavefront shaping as well as in the design and characterisation of non-local metasurfaces.en_GB
dc.description.sponsorshipEngineering and Physical Sciences Research Council (EPSRC)en_GB
dc.description.sponsorshipRoyal Societyen_GB
dc.description.sponsorshipDefence Science Technology Laboratory (DSTL)en_GB
dc.identifier.citationVol. 4, article 209en_GB
dc.identifier.doihttps://doi.org/10.1038/s42005-021-00713-1
dc.identifier.grantnumberEP/L015331/1en_GB
dc.identifier.grantnumberRPG-2016-186en_GB
dc.identifier.urihttp://hdl.handle.net/10871/127195
dc.language.isoenen_GB
dc.publisherNature Researchen_GB
dc.relation.urlhttps://doi.org/10.24378/exe.3504en_GB
dc.rightsOpen Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.en_GB
dc.subjectMetamaterialsen_GB
dc.subjectNanophotonics and plasmonicsen_GB
dc.titleDesigning collective non-local responses of metasurfacesen_GB
dc.typeArticleen_GB
dc.date.available2021-09-22T09:18:00Z
dc.identifier.issn2399-3650
dc.descriptionThis is the final version. Available from Nature Research via the DOI in this record. en_GB
dc.descriptionData availability: All data created during this research are openly available from the University of Exeter’s institutional repository https://doi.org/10.24378/exe.3504.en_GB
dc.descriptionCode availability: All custom computer programs created during this research are openly available from the University of Exeter’s institutional repository https://doi.org/10.24378/exe.3504.en_GB
dc.identifier.journalCommunications Physicsen_GB
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_GB
dcterms.dateAccepted2021-08-27
exeter.funder::Royal Society (Charity)en_GB
rioxxterms.versionVoRen_GB
rioxxterms.licenseref.startdate2021-09-16
rioxxterms.typeJournal Article/Reviewen_GB
refterms.dateFCD2021-09-22T09:12:20Z
refterms.versionFCDVoR
refterms.dateFOA2021-09-22T09:18:05Z
refterms.panelBen_GB


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Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
Except where otherwise noted, this item's licence is described as Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.