Frictional figures of merit for single layered nanostructures

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buir.contributor.orcidÇıracı, Salim|0000-0001-8023-9860en_US
dc.citation.issueNumber12en_US
dc.citation.volumeNumber108en_US
dc.contributor.authorCahangirov, S.en_US
dc.contributor.authorAtaca, C.en_US
dc.contributor.authorTopsakal, M.en_US
dc.contributor.authorSahin, H.en_US
dc.contributor.authorÇıracı, Salimen_US
dc.contributor.bilkentauthorÇıracı, Salim
dc.date.accessioned2016-02-08T09:47:48Z
dc.date.available2016-02-08T09:47:48Z
dc.date.issued2012en_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.departmentDepartment of Physicsen_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.description.abstractWe determine the frictional figures of merit for a pair of layered honeycomb nanostructures, such as graphane, fluorographene, MoS 2 and WO 2 moving over each other, by carrying out ab initio calculations of interlayer interaction under constant loading force. Using the Prandtl-Tomlinson model we derive the critical stiffness required to avoid stick-slip behavior. We show that these layered structures have low critical stiffness even under high loading forces due to their charged surfaces repelling each other. The intrinsic stiffness of these materials exceeds critical stiffness and thereby the materials avoid the stick-slip regime and attain nearly dissipationless continuous sliding. Remarkably, tungsten dioxide displays a much better performance relative to others and heralds a potential superlubricant. The absence of mechanical instabilities leading to conservative lateral forces is also confirmed directly by the simulations of sliding layers. © 2012 American Physical Society.en_US
dc.identifier.doi10.1103/PhysRevLett.108.126103en_US
dc.identifier.eissn1079-7114
dc.identifier.issn0031-9007
dc.identifier.urihttp://hdl.handle.net/11693/21542
dc.language.isoEnglishen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevLett.108.126103en_US
dc.source.titlePhysical Review Lettersen_US
dc.titleFrictional figures of merit for single layered nanostructuresen_US
dc.typeArticleen_US
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Institute of Materials Science and Nanotechnology (UNAM)
Department of Physics
Nanotechnology Research Center (NANOTAM)