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Improving the lubrication of silicon surfaces using ionic liquids as oil additives: the effect of sulfur-based functional groups

2020-05-14Journal article Restricted access
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datacite.subject.sdg09:Indústria, Inovação e Infraestruturaspt_PT
dc.contributor.authorAntunes, Mónica
dc.contributor.authorDonato, Mariana T.
dc.contributor.authorPaz, Victória
dc.contributor.authorCaetano, Fernando J. P.
dc.contributor.authorSantos, Luís
dc.contributor.authorColaco, Rogério
dc.contributor.authorBranco, Luís C.
dc.contributor.authorSaramago, Benilde
dc.date.accessioned2022-01-20T15:48:06Z
dc.date.available2022-01-20T15:48:06Z
dc.date.issued2020-05-14
dc.description.abstractThe performance of micro/nanoelectromechanical systems (MEMS/NEMS) relies on efficient lubrication. In the present work, new sulfur-based organic salts were tested as additives in a polyethylene glycol to lubricate silicon surfaces used in the manufacture of MEMS/NEMS. Seven salts were tested: 1-butylsulfonic-3-methylimidazolium triflate [(C4SO3H)MIM][TfO], thiamine triflate [Thiamine][TfO]2, 1-ethyl-3-methylimidazolium camphorsulfonate [C2MIM][CSA] [isomers (R) and (S)], 1,3-dimethylpiridinium methylsulfate [C1-3pic][MeSO4], methylimidazolium methanesulfonate [HMIM][MeSO3], and tetramethylguanidine methanesulfonate [TMG][MeSO3]. A nanotribometer was used to determine the friction coefficients using steel spheres as counter bodies. Excellent tribological properties were achieved with the additives containing the anions [MeSO4]− and [MeSO3]−. The films formed on the Si substrates were studied by FTIR, ellipsometry and AFM. A mixed lubrication mechanism was proposed where additive adsorption avoids contact between sliding surfaces.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationAntunes, M., Donato, M.T., Paz, V. et al. Improving the Lubrication of Silicon Surfaces Using Ionic Liquids as Oil Additives: The Effect of Sulfur-Based Functional Groups. Tribol Lett 68, 70 (2020). https://doi.org/10.1007/s11249-020-01308-7pt_PT
dc.identifier.doi10.1007/s11249-020-01308-7pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.2/11658
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringer Naturept_PT
dc.relationCentro de Química Estrutural
dc.relationAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
dc.relationCentro de Química Estrutural
dc.relationInstitute of Nanoscience and Nanotechnology
dc.relationAssociate Laboratory of Energy, Transports and Aeronautics
dc.relationTask-Specific Ionic Liquids and Deep Eutectic Solvents for Lubrication Nanotechnology
dc.relation.publisherversionhttps://rdcu.be/cE3Lhpt_PT
dc.subjectIonic liquidspt_PT
dc.subjectAdditivespt_PT
dc.subjectSiliconpt_PT
dc.subjectFriction coefficientpt_PT
dc.titleImproving the lubrication of silicon surfaces using ionic liquids as oil additives: the effect of sulfur-based functional groupspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCentro de Química Estrutural
oaire.awardTitleAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
oaire.awardTitleCentro de Química Estrutural
oaire.awardTitleInstitute of Nanoscience and Nanotechnology
oaire.awardTitleAssociate Laboratory of Energy, Transports and Aeronautics
oaire.awardTitleTask-Specific Ionic Liquids and Deep Eutectic Solvents for Lubrication Nanotechnology
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FNAN%2F50024%2F2013/PT
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oaire.citation.endPage14pt_PT
oaire.citation.issue2pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleTribology Letterspt_PT
oaire.citation.volume68pt_PT
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person.familyNameCaetano
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person.givenNameFernando J. P.
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