Nanofabrication of plasmon-tunable nanoantennas for tip-enhanced Raman spectroscopy

Página do item simplificado
dc.creatorBruno Santos de Oliveira
dc.creatorBraulio Soares Archanjo
dc.creatorRogerio Valaski
dc.creatorCarlos Alberto Achete
dc.creatorLuiz Gustavo de Oliveira Lopes Cançado
dc.creatorAdo Jorio de Vasconcelos
dc.creatorThiago de Lourenço e Vasconcelos
dc.date.accessioned2022-10-25T19:16:47Z
dc.date.accessioned2025-09-08T22:49:04Z
dc.date.available2022-10-25T19:16:47Z
dc.date.issued2020-09-17
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
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.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
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.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.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)
dc.identifier.doihttps://doi.org/10.1063/5.0021560
dc.identifier.issn10897690
dc.identifier.urihttps://hdl.handle.net/1843/46608
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofThe Journal of Chemical Physics
dc.rightsAcesso Restrito
dc.subjectNanotecnologia
dc.subjectEspectroscopia de Raman
dc.subject.otherTERS
dc.subject.otherNanoantennas
dc.titleNanofabrication of plasmon-tunable nanoantennas for tip-enhanced Raman spectroscopy
dc.typeArtigo de periódico
local.citation.epage114201-8
local.citation.issue11
local.citation.spage114201-1
local.citation.volume153
local.description.resumoPlasmon-tunable tip pyramids (PTTPs) are reproducible and efficient nanoantennas for tip-enhanced Raman spectroscopy (TERS). Their fabrication method is based on template stripping of a segmented gold pyramid with a size-adjustable nanopyramid end, which is capable of supporting monopole localized surface plasmon resonance (LSPR) modes leading to high spectral enhancement when its resonance energy is matched with the excitation laser energy. Here, we describe in detail the PTTP fabrication method and report a statistical analysis based on 530 PTTPs’ and 185 ordinary gold micropyramids’ templates. Our results indicate that the PTTP method generates probes with an apex diameter smaller than 30 nm on 92.4% of the batch, which is a parameter directly related to the achievable TERS spatial resolution. Moreover, the PTTPs’ nanopyramid edge size L, a critical parameter for LSPR spectral tuning, shows variability typically smaller than 12.5%. The PTTP’s performance was tested in TERS experiments performed on graphene, and the results show a spectral enhancement of up to 72-fold, which is at least one order of magnitude higher than that typically achieved with gold micropyramids. Imaging resolution is in the order of 20 nm.
local.identifier.orcidhttps://orcid.org/0000-0002-5201-0791
local.identifier.orcidhttps://orcid.org/0000-0001-8145-7712
local.identifier.orcidhttps://orcid.org/0000-0003-0816-0888
local.identifier.orcidhttps://orcid.org/0000-0002-5978-2735
local.identifier.orcidhttps://orcid.org/0000-0003-0195-444X
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://aip.scitation.org/doi/10.1063/5.0021560

Arquivos

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