Linkage between micro- and nano-Raman spectroscopy of defects in graphene

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dc.creatorCassiano Rabelo e Silva
dc.creatorThiago de Lourenço e Vasconcelos
dc.creatorBruno Carvalho Públio
dc.creatorHudson Luiz Silva de Miranda
dc.creatorLuiz Gustavo de Oliveira Lopes Cançado
dc.creatorAdo Jorio de Vasconcelos
dc.date.accessioned2022-08-03T12:50:07Z
dc.date.accessioned2025-09-08T23:50:27Z
dc.date.available2022-08-03T12:50:07Z
dc.date.issued2020-08-20
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipFINEP - Financiadora de Estudos e Projetos, Financiadora de Estudos e Projetos
dc.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)
dc.description.sponsorshipOutra Agência
dc.identifier.doihttps://doi.org/10.1103/PhysRevApplied.14.024056
dc.identifier.issn23317019
dc.identifier.urihttps://hdl.handle.net/1843/43907
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofPhysical Review Applied
dc.rightsAcesso Restrito
dc.subjectEspectroscopia de Raman
dc.subjectGrafeno
dc.subjectNanomateriais
dc.subject.otherTERS
dc.subject.otherGraphene
dc.subject.otherDefect
dc.titleLinkage between micro- and nano-Raman spectroscopy of defects in graphene
dc.typeArtigo de periódico
local.citation.epage024056-6
local.citation.issue2
local.citation.spage024056-1
local.citation.volume14
local.description.resumoOn nanomaterials characterization, the evolution from the broadly utilized micro-Raman spectroscopy to a nanoscale regime is taking place with the improvements in tip-enhanced Raman spectroscopy (TERS). It is not clear, however, to which extent protocols developed within the diffraction-limited far-field configuration apply to the near-field regime. Defects in graphene nanoflakes are investigated in this work in both micro and nano regimes, showing that the Raman characteristics utilized to quantify defects in the far-field regime actually change in the presence of the TERS tip, generating incompatible results. The micro-tonano spectral mismatch can be modeled using a theory of spatial coherence in near-field Raman scattering, from which a parameterization procedure can be derived in order to obtain consistent results. The incompatibilities observed here for graphene should also happen in other structures relevant to nanoscience and nanotechnology when explored in the nano-Raman regime, and they can be resolved similarly.
local.identifier.orcidhttps://orcid.org/0000-0003-0488-2242
local.identifier.orcidhttps://orcid.org/0000-0003-0195-444X
local.identifier.orcidhttps://orcid.org/0000-0002-9946-5224
local.identifier.orcidhttps://orcid.org/0000-0003-0816-0888
local.identifier.orcidhttps://orcid.org/0000-0002-5978-2735
local.publisher.countryBrasil
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA ELÉTRICA
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.14.024056

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