Nanomechanics of few-layer materials: do individual layers slide upon folding?

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dc.creatorRonaldo Junio Campos Batista
dc.creatorLuiz Gustavo de Oliveira Lopes Cançado
dc.creatorAdo Jorio de Vasconcelos
dc.creatorHelio Chacham
dc.creatorBernardo Ruegger Almeida Neves
dc.creatorRafael Freitas Dias
dc.creatorAna Paula Moreira Barboza
dc.creatorAlan Barros de Oliveira
dc.creatorTaíse Matte Manhabosco
dc.creatorThiago Rodrigo Gomes da Silva
dc.creatorMatheus Josué de Souza Matos
dc.creatorAndreij de Carvalho Gadelha
dc.creatorCassiano Rabelo e Silva
dc.date.accessioned2022-08-03T17:52:38Z
dc.date.accessioned2025-09-09T01:12:12Z
dc.date.available2022-08-03T17:52:38Z
dc.date.issued2020-11-30
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.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.3762/bjnano.11.162
dc.identifier.issn21904286
dc.identifier.urihttps://hdl.handle.net/1843/43953
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofBeilstein Journal of Nanotechnology
dc.rightsAcesso Aberto
dc.subjectMateriais nanoestruturados
dc.subjectEspectroscopia de Raman
dc.subject.otherAnalytical methods
dc.subject.otherAtomic force microscopy
dc.subject.otherMolecular dynamics
dc.subject.otherRaman spectroscopy
dc.subject.otherNanostructured materials
dc.titleNanomechanics of few-layer materials: do individual layers slide upon folding?
dc.typeArtigo de periódico
local.citation.epage1808
local.citation.spage1801
local.citation.volume11
local.description.resumoFolds naturally appear on nanometrically thin materials, also called “2D materials”, after exfoliation, eventually creating folded edges across the resulting flakes. We investigate the adhesion and flexural properties of single-layered and multilayered 2D materials upon folding in the present work. This is accomplished by measuring and modeling mechanical properties of folded edges, which allows for the experimental determination of the bending stiffness (κ) of multilayered 2D materials as a function of the number of layers (n). In the case of talc, we obtain κ ∝ n3 for n ≥ 5, indicating no interlayer sliding upon folding, at least in this thickness range. In contrast, tip-enhanced Raman spectroscopy measurements on edges in folded graphene flakes, 14 layers thick, show no significant strain. This indicates that layers in graphene flakes, up to 5 nm thick, can still slip to relieve stress, showing the richness of the effect in 2D systems. The obtained interlayer adhesion energy for graphene (0.25 N/m) and talc (0.62 N/m) is in good agreement with recent experimental results and theoretical predictions. The obtained value for the adhesion energy of graphene on a silicon substrate is also in agreement with previous results.
local.identifier.orcidhttps://orcid.org/0000-0002-7471-4968
local.identifier.orcidhttps://orcid.org/0000-0003-0816-0888
local.identifier.orcidhttps://orcid.org/0000-0002-5978-2735
local.identifier.orcidhttps://orcid.org/0000-0001-5041-9094
local.identifier.orcidhttps://orcid.org/0000-0003-0464-4754
local.identifier.orcidhttps://orcid.org/0000-0002-1807-971X
local.identifier.orcidhttps://orcid.org/0000-0002-6803-2223
local.identifier.orcidhttps://orcid.org/0000-0002-4255-5763
local.identifier.orcidhttps://orcid.org/0000-0002-6350-7680
local.identifier.orcidhttps://orcid.org/0000-0003-0488-2242
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://www.beilstein-journals.org/bjnano/articles/11/162

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