Surface Plasmon Resonances in Silver Nanostars

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dc.contributor.authorReyes Gómez, Faustino
dc.contributor.authorRubira, Rafael J G [UNESP]
dc.contributor.authorCamacho, Sabrina A. [UNESP]
dc.contributor.authorMartin, Cibely S. [UNESP]
dc.contributor.authorda Silva, Robson R.
dc.contributor.authorConstantino, Carlos J L [UNESP]
dc.contributor.authorAlessio, Priscila [UNESP]
dc.contributor.authorOliveira, Osvaldo N.
dc.contributor.authorMejía-Salazar, J Ricardo
dc.contributor.institutionUniversidad del Valle
dc.contributor.institutionUniversity of Cantabria
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionNational Institute of Telecommunications (Inatel)
dc.date.accessioned2019-10-06T16:05:01Z
dc.date.available2019-10-06T16:05:01Z
dc.date.issued2018-11-08
dc.description.abstractThe recent development of silver nanostars (Ag-NSs) is promising for improved surface-enhanced sensing and spectroscopy, which may be further exploited if the mechanisms behind the excitation of localized surface plasmon resonances (LSPRs) are identified. Here, we show that LSPRs in Ag-NSs can be obtained with finite-difference time-domain (FDTD) calculations by considering the nanostars as combination of crossed nanorods (Ag-NRs). In particular, we demonstrate that an apparent tail at large wavelengths ( λ ≳ 700 nm) observed in the extinction spectra of Ag-NSs is due to a strong dipolar plasmon resonance, with no need to invoke heterogeneity (different number of arms) effects as is normally done in the literature. Our description also indicates a way to tune the strongest LSPR at desired wavelengths, which is useful for sensing applications.en
dc.description.affiliationDepartamento de Física Universidad del Valle
dc.description.affiliationDepartment of Applied Physics University of Cantabria, Avda. Los Castros ,s/n
dc.description.affiliationSchool of Technology and Applied Sciences São Paulo State University (UNESP) Campus Presidente Prudente
dc.description.affiliationSão Carlos Institute of Physics University of São Paulo, PO Box 369
dc.description.affiliationNational Institute of Telecommunications (Inatel)
dc.description.affiliationUnespSchool of Technology and Applied Sciences São Paulo State University (UNESP) Campus Presidente Prudente
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipDepartamento Administrativo de Ciencia, Tecnología e Innovación
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 2013/14262-7; 2013/01897-4; 2016/09634-0; 2016/06612-6; 2016/12311-9
dc.description.sponsorshipIdDepartamento Administrativo de Ciencia, Tecnología e Innovación: FP44842-128-2017
dc.description.sponsorshipIdCAPES: N/A
dc.description.sponsorshipIdCNPq: N/A
dc.identifierhttp://dx.doi.org/10.3390/s18113821
dc.identifier.citationSensors (Basel, Switzerland), v. 18, n. 11, 2018.
dc.identifier.doi10.3390/s18113821
dc.identifier.issn1424-8220
dc.identifier.lattes9727122203219263
dc.identifier.orcid0000-0002-1345-0540
dc.identifier.scopus2-s2.0-85056380292
dc.identifier.urihttp://hdl.handle.net/11449/188343
dc.language.isoeng
dc.relation.ispartofSensors (Basel, Switzerland)
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAg nanostars
dc.subjectmetallic nanoparticles
dc.subjectplasmonic biosensing
dc.titleSurface Plasmon Resonances in Silver Nanostarsen
dc.typeArtigo
unesp.author.lattes9727122203219263[7]
unesp.author.lattes6118325967319836[6]
unesp.author.orcid0000-0001-6887-4749[5]
unesp.author.orcid0000-0003-1742-9957[9]
unesp.author.orcid0000-0002-1345-0540[7]
unesp.author.orcid0000-0002-5921-3161[6]

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