Two-dimensional talc as a van der Waals material for solid lubrication at the nanoscale

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dc.creatorBorislav Vasic
dc.creatorCaterina Marina Czibula
dc.creatorMarkus Kratzer
dc.creatorBernardo Ruegger Almeida Neves
dc.creatorAleksandar Matkovic
dc.creatorChristian Teichert
dc.date.accessioned2023-07-10T19:46:15Z
dc.date.accessioned2025-09-09T00:27:50Z
dc.date.available2023-07-10T19:46:15Z
dc.date.issued2021
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.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.1088/1361-6528/abeffe
dc.identifier.issn1361-6528
dc.identifier.urihttps://hdl.handle.net/1843/56039
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofNanotechnology
dc.rightsAcesso Aberto
dc.subjectForças de Van der Waals
dc.subjectMinerais
dc.subjectMicroscopia de força atômica
dc.subject.otherVan der Waals materials
dc.subject.otherLayered minerals
dc.subject.other2D talc
dc.subject.otherNanofriction
dc.subject.otherAtomic force microscopy
dc.titleTwo-dimensional talc as a van der Waals material for solid lubrication at the nanoscale
dc.typeArtigo de periódico
local.citation.epage10
local.citation.issue26
local.citation.spage1
local.citation.volume32
local.description.resumoTalc is a van der Waals and naturally abundant mineral with the chemical formula Mg3Si4O10(OH)2. Two-dimensional (2D) talc could be an alternative to hBN as van der Waals dielectric in 2D heterostructures. Furthermore, due to its good mechanical and frictional properties, 2D talc could be integrated into various hybrid microelectromechanical systems, or used as a functional filler in polymers. However, properties of talcas one of the main representatives of the phyllosilicate (sheet silicates) group are almost completely unexplored when ultrathin crystalline films and monolayers are considered. We investigate 2D talc flakes down to single layer thickness and reveal their efficiency for solid lubrication at the nanoscale. We demonstrate by atomic force microscopy based methods and contact angle measurements that several nanometer thick talc flakes have all properties necessary for efficient lubrication: a low adhesion, hydrophobic nature, and a low friction coefficient of 0.10 ± 0.02. Compared to the silicon-dioxide substrate, 2D talc flakes reduce friction by more than a factor of five, adhesion by around 20%, and energy dissipation by around 7%. Considering our findings, together with the natural abundance of talc, we put forward that 2D talc can be a cost-effective solid lubricant in micro- and nano-mechanical devices.
local.identifier.orcidhttps://orcid.org/0000-0002-1575-8004
local.identifier.orcidhttps://orcid.org/0000-0002-7962-5796
local.identifier.orcidhttps://orcid.org/0000-0001-5181-6796
local.identifier.orcidhttps://orcid.org/0000-0003-0464-4754
local.identifier.orcidhttps://orcid.org/0000-0001-8072-6220
local.identifier.orcidhttps://orcid.org/0000-0002-0796-2355
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://iopscience.iop.org/article/10.1088/1361-6528/abeffe

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