Atomic-Scale Variations of the Mechanical Response of 2D Materials Detected by Noncontact Atomic Force Microscopy

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Show simple item record De la Torre, B. Ellner, M. Pou, Pablo Nicoara, Nicoleta Pérez, Rubén Gómez-Rodríguez, J.M.
dc.contributor.other UAM. Departamento de Física Teórica de la Materia Condensada es_ES 2017-08-14T07:43:16Z 2017-08-14T07:43:16Z 2016-06-17
dc.identifier.citation Physical Review Letters 116.24 (2016): 245502 en_US
dc.identifier.issn 0031-9007 (print) es_ES
dc.identifier.issn 1079-7114 (online) es_ES
dc.description.abstract We show that noncontact atomic force microscopy (AFM) is sensitive to the local stiffness in the atomicscale limit on weakly coupled 2D materials, as graphene on metals. Our large amplitude AFM topography and dissipation images under ultrahigh vacuum and low temperature resolve the atomic and moiré patterns in graphene on Pt (111), despite its extremely low geometric corrugation. The imaging mechanisms are identified with a multiscale model based on density-functional theory calculations, where the energy cost of global and local deformations of graphene competes with short-range chemical and long-range van der Waals interactions. Atomic contrast is related with short-range tip-sample interactions, while the dissipation can be understood in terms of global deformations in the weakly coupled graphene layer. Remarkably, the observed moiré modulation is linked with the subtle variations of the local interplanar graphene-substrate interaction, opening a new route to explore the local mechanical properties of 2D materials at the atomic scale en_US
dc.description.sponsorship We thank the Marie Curie ITN Network “ACRITAS” (Grant No. FP7-PEOPLE-2012-ITN-317348) funded by the European Commission under the FP7 Marie Curie PEOPLE programme and the Spanish MINECO (Projects No. CSD2010-00024, No. MAT2011-23627, No. MAT2013-41636-P, and No. MAT2014-54484-P) for financial support. Computer time was provided by the Spanish Supercomputer Network (RES) at Marenostrum III (BSC, Barcelona) and Magerit (CesViMa, Madrid) computers. P. P. was supported by the Ramón y Cajal program en_US
dc.format.extent 6 pag. es_ES
dc.format.mimetype application/pdf en
dc.language.iso eng en
dc.publisher American Physical Society en_US
dc.relation.ispartof Physical Review Letters en_US
dc.rights © 2016 American Physical Society en_US
dc.subject.other Density functional theory en_US
dc.subject.other Graphene substrates en_US
dc.subject.other Global deformations en_US
dc.subject.other Multi-scale modeling en_US
dc.subject.other Van Der Waals interactions en_US
dc.title Atomic-Scale Variations of the Mechanical Response of 2D Materials Detected by Noncontact Atomic Force Microscopy en_US
dc.type article en
dc.subject.eciencia Física es_ES
dc.relation.publisherversion es_ES
dc.identifier.doi 10.1103/PhysRevLett.116.245502 es_ES
dc.identifier.publicationfirstpage 245502 es_ES
dc.identifier.publicationissue 24 es_ES
dc.identifier.publicationlastpage 245502 es_ES
dc.identifier.publicationvolume 116 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/317348 es_ES
dc.relation.projectID Gobierno de España. CSD2010-00024 es_ES
dc.relation.projectID Gobierno de España. MAT2011-23627 es_ES
dc.relation.projectID Gobierno de España. MAT2013-41636-P es_ES
dc.relation.projectID Gobierno de España. MAT2014-54484-P es_ES
dc.type.version info:eu-repo/semantics/publishedVersion en
dc.rights.accessRights openAccess en
dc.authorUAM Nicoara , Nicoleta (264167)
dc.authorUAM Pou Bell, Pablo (262784)

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