Structural lubricity under ambient conditions

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buir.contributor.authorDurgun, Engin
dc.citation.volumeNumber7en_US
dc.contributor.authorCihan, Ebruen_US
dc.contributor.authorİpek, Semranen_US
dc.contributor.authorDurgun, Enginen_US
dc.contributor.authorBaykara, Mehmet Z.en_US
dc.date.accessioned2018-04-12T10:49:32Z
dc.date.available2018-04-12T10:49:32Z
dc.date.issued2016en_US
dc.departmentDepartment of Mechanical Engineeringen_US
dc.description.abstractDespite its fundamental importance, physical mechanisms that govern friction are poorly understood. While a state of ultra-low friction, termed structural lubricity, is expected for any clean, atomically flat interface consisting of two different materials with incommensurate structures, some associated predictions could only be quantitatively confirmed under ultra-high vacuum (UHV) conditions so far. Here, we report structurally lubric sliding under ambient conditions at mesoscopic (∼4,000-130,000 nm2) interfaces formed by gold islands on graphite. Ab initio calculations reveal that the gold-graphite interface is expected to remain largely free from contaminant molecules, leading to structurally lubric sliding. The experiments reported here demonstrate the potential for practical lubrication schemes for micro-and nano-electromechanical systems, which would mainly rely on an atomic-scale structural mismatch between the slider and substrate components, via the utilization of material systems featuring clean, atomically flat interfaces under ambient conditions.en_US
dc.description.provenanceMade available in DSpace on 2018-04-12T10:49:32Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 179475 bytes, checksum: ea0bedeb05ac9ccfb983c327e155f0c2 (MD5) Previous issue date: 2016en
dc.identifier.doi10.1038/ncomms12055en_US
dc.identifier.eissn2041-1723en_US
dc.identifier.urihttp://hdl.handle.net/11693/36705
dc.language.isoEnglishen_US
dc.publisherNature Publishing Groupen_US
dc.relation.isversionofhttp://dx.doi.org/10.1038/ncomms12055en_US
dc.source.titleNature Communicationsen_US
dc.titleStructural lubricity under ambient conditionsen_US
dc.typeArticleen_US

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