Impact of substrate on Tip-Enhanced Raman Spectroscopy: a comparison between field-distribution simulations and graphene measurements

Página do item simplificado
dc.creatorHudson Luiz Silva de Miranda
dc.creatorAdo Jorio de Vasconcelos
dc.creatorCassiano Rabelo e Silva
dc.creatorLuiz Gustavo de Oliveira Lopes Cançado
dc.creatorThiago de Lourenço e Vasconcelos
dc.creatorBruno Santos de Oliveira
dc.creatorFlorian Schulz
dc.creatorHolger Lange
dc.creatorStephanie Reich
dc.creatorPatryk Kusch
dc.date.accessioned2022-08-08T12:12:38Z
dc.date.accessioned2025-09-08T22:55:40Z
dc.date.available2022-08-08T12:12:38Z
dc.date.issued2020-06-29
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.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.1103/PhysRevResearch.2.023408
dc.identifier.issn26431564
dc.identifier.urihttps://hdl.handle.net/1843/44026
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofPhysical Review Research
dc.rightsAcesso Aberto
dc.subjectEspectroscopia de Raman
dc.subjectGrafeno
dc.subject.otherTERS
dc.subject.otherTip-Enhanced Raman Spectroscopy
dc.subject.otherGraphene
dc.subject.otherNanophotonics
dc.titleImpact of substrate on Tip-Enhanced Raman Spectroscopy: a comparison between field-distribution simulations and graphene measurements
dc.typeArtigo de periódico
local.citation.epage023408-8
local.citation.issue2
local.citation.spage023408-1
local.citation.volume2
local.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.
local.identifier.orcidhttps://orcid.org/0000-0002-9946-5224
local.identifier.orcidhttps://orcid.org/0000-0002-5978-2735
local.identifier.orcidhttps://orcid.org/0000-0003-0488-2242
local.identifier.orcidhttps://orcid.org/0000-0003-0816-0888
local.identifier.orcidhttps://orcid.org/0000-0003-0195-444X
local.identifier.orcidhttps://orcid.org/0000-0003-4440-3680
local.identifier.orcidhttps://orcid.org/0000-0002-4236-2806
local.identifier.orcidhttps://orcid.org/0000-0002-2391-0256
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/prresearch/abstract/10.1103/PhysRevResearch.2.023408

Arquivos

Pacote original

Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
Impact of substrate on tip enhanced Raman spectroscopy A comparison between PDFA.pdf
Tamanho:
901.21 KB
Formato:
Adobe Portable Document Format
Baixar

Licença do pacote

Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
License.txt
Tamanho:
1.99 KB
Formato:
Plain Text
Descrição:
Baixar

Coleções

Artigo de Periódico

Logo UFMG