Apparent softening of wet graphene membranes on a microfluidic platform

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dc.creatorGustavo Arrighi Ferrari
dc.creatorBernardo Ruegger Almeida Neves
dc.creatorRodrigo Gribel Lacerda
dc.creatorAlan Barros de Oliveira
dc.creatorIve Silvestre de Almeida
dc.creatorMatheus Josué de Souza Matos
dc.creatorRonaldo Junio Campos Batista
dc.creatorThales Fernando Damasceno Fernandes
dc.creatorLeonel Muniz Meireles
dc.creatorEliel Gomes da Silva Neto
dc.creatorHelio Chacham
dc.date.accessioned2023-07-10T13:01:41Z
dc.date.accessioned2025-09-08T23:00:31Z
dc.date.available2023-07-10T13:01:41Z
dc.date.issued2018
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.identifier.doihttps://doi.org/10.1021/acsnano.7b08841
dc.identifier.issn1936-086X
dc.identifier.urihttps://hdl.handle.net/1843/55988
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofACS Nano
dc.rightsAcesso Restrito
dc.subjectGrafeno
dc.subjectPropriedades mecânicas
dc.subject.otherGraphene
dc.subject.otherMechanical properties
dc.subject.otherLiquid interface
dc.titleApparent softening of wet graphene membranes on a microfluidic platform
dc.typeArtigo de periódico
local.citation.epage4320
local.citation.issue5
local.citation.spage4312
local.citation.volume12
local.description.resumoGraphene is regarded as the toughest two-dimensional material (highest in-plane elastic properties) and, as a consequence, it has been employed/proposed as an ultrathin membrane in a myriad of microfluidic devices. Yet, an experimental investigation of eventual variations on the apparent elastic properties of a suspended graphene membrane in contact with air or water is still missing. In this work, the mechanical response of suspended monolayer graphene membranes on a microfluidic platform is investigated via scanning probe microscopy experiments. A high elastic modulus is measured for the membrane when the platform is filled with air, as expected. However, a significant apparent softening of graphene is observed when water fills the microfluidic system. Through molecular dynamics simulations and a phenomenological model, we associate such softening to a water-induced uncrumpling process of the suspended graphene membrane. This result may bring substantial modifications on the design and operation of microfluidic devices which exploit pressure application on graphene membranes.
local.identifier.orcidhttps://orcid.org/0000-0002-0824-5622
local.identifier.orcidhttps://orcid.org/0000-0003-0464-4754
local.identifier.orcidhttps://orcid.org/0000-0003-4777-7370
local.identifier.orcidhttps://orcid.org/0000-0002-6803-2223
local.identifier.orcidhttps://orcid.org/0000-0002-0398-3992
local.identifier.orcidhttps://orcid.org/0000-0002-7471-4968
local.identifier.orcidhttps://orcid.org/0000-0003-3868-9029
local.identifier.orcidhttps://orcid.org/0000-0001-6550-7804
local.identifier.orcidhttps://orcid.org/0000-0002-4658-3243
local.identifier.orcidhttps://orcid.org/0000-0001-5041-9094
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://pubs.acs.org/doi/10.1021/acsnano.7b08841

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