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dc.contributor.authorBertoni, Giovanni
dc.contributor.authorFabbri, Filippo
dc.contributor.authorVillani, Marco
dc.contributor.authorLazzarini, Laura
dc.contributor.authorTurner, Stuart
dc.contributor.authorVan Tendeloo, Gustaaf
dc.contributor.authorCalestani, Davide
dc.contributor.authorGradecak, Silvija
dc.contributor.authorZappettini, Andrea
dc.contributor.authorSalviati, Giancarlo
dc.date.accessioned2016-03-18T16:18:05Z
dc.date.available2016-03-18T16:18:05Z
dc.date.issued2016-01
dc.date.submitted2015-06
dc.identifier.issn2045-2322
dc.identifier.urihttp://hdl.handle.net/1721.1/101741
dc.description.abstractMetallic nanoparticles can be used to enhance optical absorption or emission in semiconductors, thanks to a strong interaction of collective excitations of free charges (plasmons) with electromagnetic fields. Herein we present direct imaging at the nanoscale of plasmon-exciton coupling in Au/ZnO nanostructures by combining scanning transmission electron energy loss and cathodoluminescence spectroscopy and mapping. The Au nanoparticles (~30 nm in diameter) are grown in-situ on ZnO nanotetrapods by means of a photochemical process without the need of binding agents or capping molecules, resulting in clean interfaces. Interestingly, the Au plasmon resonance is localized at the Au/vacuum interface, rather than presenting an isotropic distribution around the nanoparticle. On the contrary, a localization of the ZnO signal has been observed inside the Au nanoparticle, as also confirmed by numerical simulations.en_US
dc.description.sponsorshipSeventh Framework Programme (European Commission) (Grant Agreement n. 265073 ITN-Nanowiring)en_US
dc.description.sponsorshipSeventh Framework Programme (European Commission) (Grant Agreement n. 312483 ESTEEM2 for Integrated Infrastructure Initiative – I3)en_US
dc.description.sponsorshipUnited States. Dept. of Energy. Office of Basic Energy Sciences (Award DE-SC0001088)en_US
dc.language.isoen_US
dc.publisherNature Publishing Groupen_US
dc.relation.isversionofhttp://dx.doi.org/10.1038/srep19168en_US
dc.rightsCreative Commons Attributionen_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.sourceNature Publishing Groupen_US
dc.titleNanoscale mapping of plasmon and exciton in ZnO tetrapods coupled with Au nanoparticlesen_US
dc.typeArticleen_US
dc.identifier.citationBertoni, Giovanni, Filippo Fabbri, Marco Villani, Laura Lazzarini, Stuart Turner, Gustaaf Van Tendeloo, Davide Calestani, Silvija Gradecak, Andrea Zappettini, and Giancarlo Salviati. “Nanoscale Mapping of Plasmon and Exciton in ZnO Tetrapods Coupled with Au Nanoparticles.” Scientific Reports 6 (January 12, 2016): 19168.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Materials Science and Engineeringen_US
dc.contributor.mitauthorGradecak, Silvijaen_US
dc.relation.journalScientific Reportsen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsBertoni, Giovanni; Fabbri, Filippo; Villani, Marco; Lazzarini, Laura; Turner, Stuart; Van Tendeloo, Gustaaf; Calestani, Davide; Gradecak, Silvija; Zappettini, Andrea; Salviati, Giancarloen_US
mit.licensePUBLISHER_CCen_US


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