DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kwon, Sangku | ko |
dc.contributor.author | Ko, Jae-Hyeon | ko |
dc.contributor.author | Jeon, Ki-Joon | ko |
dc.contributor.author | Kim, Yong-Hyun | ko |
dc.contributor.author | Park, JeongYoung | ko |
dc.date.accessioned | 2013-03-12T08:22:27Z | - |
dc.date.available | 2013-03-12T08:22:27Z | - |
dc.date.created | 2012-08-13 | - |
dc.date.created | 2012-08-13 | - |
dc.date.created | 2012-08-13 | - |
dc.date.issued | 2012-12 | - |
dc.identifier.citation | NANO LETTERS, v.12, no.12, pp.6043 - 6048 | - |
dc.identifier.issn | 1530-6984 | - |
dc.identifier.uri | http://hdl.handle.net/10203/101778 | - |
dc.description.abstract | Atomically thin graphene is an ideal model system for studying nanoscale friction due to its intrinsic two-dimensional (2D) anisotropy. Furthermore, modulating its tribological properties could be an important milestone for graphene-based micro- and nanomechanical devices. Here, we report unexpectedly enhanced nanoscale friction on chemically modified graphene and a relevant theoretical analysis associated with flexural phonons. Ultrahigh vacuum friction force microscopy measurements show that nanoscale friction on the graphene surface increases by a factor of 6 after fluorination of the surface, while the adhesion force is slightly reduced. Density functional theory calculations show that the out-of-plane bending stiffness of graphene increases up to 4-fold after fluorination. Thus, the less compliant F-graphene exhibits more friction. This indicates that the mechanics of tip-to-graphene nanoscale friction would be characteristically different from that of conventional solid-on-solid contact and would be dominated by the out-of-plane bending stiffness of the chemically modified graphene. We propose that damping via flexural phonons could be a main source for frictional energy dissipation in 2D systems such as graphene. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Enhanced Nanoscale Friction on Fluorinated Graphene | - |
dc.type | Article | - |
dc.identifier.wosid | 000312122100001 | - |
dc.identifier.scopusid | 2-s2.0-84870921161 | - |
dc.type.rims | ART | - |
dc.citation.volume | 12 | - |
dc.citation.issue | 12 | - |
dc.citation.beginningpage | 6043 | - |
dc.citation.endingpage | 6048 | - |
dc.citation.publicationname | NANO LETTERS | - |
dc.identifier.doi | 10.1021/nl204019k | - |
dc.contributor.localauthor | Kim, Yong-Hyun | - |
dc.contributor.localauthor | Park, JeongYoung | - |
dc.contributor.nonIdAuthor | Jeon, Ki-Joon | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Fluorinated graphene | - |
dc.subject.keywordAuthor | pristine graphene | - |
dc.subject.keywordAuthor | atomic force microscopy | - |
dc.subject.keywordAuthor | friction | - |
dc.subject.keywordAuthor | adhesion | - |
dc.subject.keywordPlus | FORCE MICROSCOPY | - |
dc.subject.keywordPlus | MONOLAYER GRAPHENE | - |
dc.subject.keywordPlus | LATERAL STIFFNESS | - |
dc.subject.keywordPlus | HYDROGENATION | - |
dc.subject.keywordPlus | ANISOTROPY | - |
dc.subject.keywordPlus | GRAPHANE | - |
dc.subject.keywordPlus | SHEETS | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.