Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/353134
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dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authorunicampFerbonink, Guilherme Ferreira-
dc.contributor.authorunicampSantos, Diego Pereira dos-
dc.contributor.authorunicampSilva, René Alfonso Nome-
dc.typeArtigopt_BR
dc.titleUltrafast dynamics of au nanopyramid interfaces prepared by nanosphere lithography: effect of substrate chemical compositionpt_BR
dc.contributor.authorFerbonink, Guilherme F.-
dc.contributor.authorSpada, Edna R.-
dc.contributor.authorSantos, Diego P. dos-
dc.contributor.authorSartorelli, Maria L.-
dc.contributor.authorNome, Rene A.-
dc.subjectEspectroscopia ultrarrápidapt_BR
dc.subject.otherlanguageUltrafast spectroscopypt_BR
dc.description.abstractThis work describes ultrafast spectroscopy studies of Au triangular pyramid particle arrays deposited over glass (termed Au/glass), and 190 nm indium tin oxide (ITO) film (termed Au/ITO/glass) prepared by nanosphere lithography. The linear absorption spectra of Au/glass and Au/ITO/glass exhibit surface plasmon resonances at 800 and 870 nm, respectively, in good agreement with discrete dipole approximation simulations. Ultrafast pump-probe measurements at wavelengths below resonance, at resonance, and above the surface plasmon resonance for each of these two systems are presented. The pump-probe measurements on both systems can be well fit with a model accounting for electron-electron scattering, electron-phonon coupling, and acoustic oscillations on top of cooling of the gold lattice. Numerical simulations employing a two-temperature model are consistent with the single-color pump-probe exponential decays. The wavelength-dependent pump-probe results are interpreted in terms of the complex wavelength-dependent refractive index of gold. We show that this interpretation is consistent with diffractive-optic four-wave mixing spectroscopy measurements of absorptive and dispersive parts of the third-order nonlinear polarization at 800 nmpt_BR
dc.relation.ispartofJournal of the Brazilian chemical societypt_BR
dc.relation.ispartofabbreviationJ. Braz. chem. soc.pt_BR
dc.publisher.citySão Paulo, SPpt_BR
dc.publisher.countryBrasilpt_BR
dc.publisherSociedade Brasileira de Químicapt_BR
dc.date.issued2016-
dc.date.monthofcirculationFeb.pt_BR
dc.language.isoengpt_BR
dc.description.volume27pt_BR
dc.description.issuenumber2pt_BR
dc.description.firstpage423pt_BR
dc.description.lastpage433pt_BR
dc.rightsAbertopt_BR
dc.sourceSciELOpt_BR
dc.identifier.issn0103-5053pt_BR
dc.identifier.eissn1678-4790pt_BR
dc.identifier.doi10.5935/0103-5053.20150344pt_BR
dc.identifier.urlhttps://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532016000200423pt_BR
dc.description.sponsorshipFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESPpt_BR
dc.description.sponsordocumentnumberSem informaçãopt_BR
dc.date.available2020-12-11T21:00:54Z-
dc.date.accessioned2020-12-11T21:00:54Z-
dc.description.provenanceSubmitted by Thais de Brito Barroso (tbrito@unicamp.br) on 2020-12-11T21:00:54Z No. of bitstreams: 0en
dc.description.provenanceMade available in DSpace on 2020-12-11T21:00:54Z (GMT). No. of bitstreams: 0 Previous issue date: 2016en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/353134-
dc.contributor.departmentSem informaçãopt_BR
dc.contributor.departmentDepartamento de Físico-Químicapt_BR
dc.contributor.departmentDepartamento de Físico-Químicapt_BR
dc.contributor.unidadeInstituto de Químicapt_BR
dc.contributor.unidadeInstituto de Químicapt_BR
dc.contributor.unidadeInstituto de Químicapt_BR
dc.subject.keywordInterface processespt_BR
dc.subject.keywordNanomaterialspt_BR
dc.identifier.sourceS0103-50532016000200423pt_BR
dc.creator.orcid0000-0002-4005-3233pt_BR
dc.creator.orcid0000-0001-9468-7293pt_BR
dc.creator.orcid0000-0003-4804-3395pt_BR
dc.type.formArtigopt_BR
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