1. Repositório Institucional da UFMG
  2. Publicações Científicas e Culturais
  3. Artigo de Periódico
Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/44026
Full metadata record
DC FieldValueLanguage
dc.creatorHudson Luiz Silva de Mirandapt_BR
dc.creatorAdo Jorio de Vasconcelospt_BR
dc.creatorCassiano Rabelo e Silvapt_BR
dc.creatorLuiz Gustavo de Oliveira Lopes Cançadopt_BR
dc.creatorThiago de Lourenço e Vasconcelospt_BR
dc.creatorBruno Santos de Oliveirapt_BR
dc.creatorFlorian Schulzpt_BR
dc.creatorHolger Langept_BR
dc.creatorStephanie Reichpt_BR
dc.creatorPatryk Kuschpt_BR
dc.date.accessioned2022-08-08T12:12:38Z-
dc.date.available2022-08-08T12:12:38Z-
dc.date.issued2020-06-29-
dc.citation.volume2pt_BR
dc.citation.issue2pt_BR
dc.citation.spage023408-1pt_BR
dc.citation.epage023408-8pt_BR
dc.identifier.doihttps://doi.org/10.1103/PhysRevResearch.2.023408pt_BR
dc.identifier.issn26431564pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/44026-
dc.description.resumoTip-enhanced Raman spectroscopy (TERS) has reached nanometer spatial resolution for measurements performed at ambient conditions and subnanometer resolution at ultrahigh vacuum. Super-resolution (beyond the tip apex diameter) TERS has been obtained mostly in the gap mode configuration, where a conductive substrate localizes the electric fields. Here we present experimental and theoretical TERS to explore the field distribution responsible for spectral enhancement. We use gold tips of 40 ± 10 nm apex diameter to measure TERS on graphene, a spatially delocalized two-dimensional sample, sitting on different substrates: (i) glass, (ii) a thin layer of gold and (iii) a surface covered with 12 nm diameter gold spheres, for which 6 nm resolution is achieved at ambient conditions. The super-resolution is due to the field configuration resulting from the coupled tip-sample-substrate system, exhibiting a nontrivial spatial surface distribution. The field distribution and the symmetry selection rules are different for nongap versus gap mode configurations. This influences the overall enhancement which depends on the Raman mode symmetry and substrate structure.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Geraispt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.description.sponsorshipFINEP - Financiadora de Estudos e Projetos, Financiadora de Estudos e Projetospt_BR
dc.format.mimetypepdfpt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA ELÉTRICApt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE FÍSICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofPhysical Review Researchpt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectTERSpt_BR
dc.subjectTip-Enhanced Raman Spectroscopypt_BR
dc.subjectGraphenept_BR
dc.subjectNanophotonicspt_BR
dc.subject.otherEspectroscopia de Ramanpt_BR
dc.subject.otherGrafenopt_BR
dc.titleImpact of substrate on Tip-Enhanced Raman Spectroscopy: a comparison between field-distribution simulations and graphene measurementspt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.2.023408pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-9946-5224pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-5978-2735pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-0488-2242pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-0816-0888pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-0195-444Xpt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-4440-3680pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-4236-2806pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-2391-0256pt_BR
Appears in Collections:Artigo de Periódico

Files in This Item:
File Description SizeFormat 
Impact of substrate on tip enhanced Raman spectroscopy A comparison between PDFA.pdf901.21 kBAdobe PDFView/Open
Show simple item record


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.