Model experiments of superlubricity of graphite

Dienwiebel, Martin; Pradeep, Namboodiri; Verhoeven, Gertjan S.; Zandbergen, H.W.; Frenken, J.W.M.

doi:10.1016/j.susc.2004.12.011

Cited by 177 publications

(136 citation statements)

References 52 publications

(60 reference statements)

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“…31. Because the contribution of deformation to friction is directly proportion to deformation energy,…”

Section: Resultsmentioning

confidence: 99%

An atomistic investigation of the effect of strain on frictional properties of suspended graphene

Bai

et al. 2016

AIP Advances

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We performed molecular dynamics (MD) simulations of a diamond probe scanned on a suspended graphene to reveal the effect of strain on the frictional properties of suspended graphene. The graphene was subjected to some certain strain along the scanning direction. We compared the friction coefficient obtained from different normal loads and strain. The results show that the friction coefficient can be decreased about one order of magnitude with the increase of the strain. And that can be a result of the decreased asymmetry of the contact region which is caused by strain. The synthetic effect of potential energy and the fluctuation of contact region were found to be the main reason accounting for the fluctuation of the friction force. The strain can reduce the fluctuation of the contact region and improve the stability of friction.

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“…31. Because the contribution of deformation to friction is directly proportion to deformation energy,…”

Section: Resultsmentioning

confidence: 99%

An atomistic investigation of the effect of strain on frictional properties of suspended graphene

Bai

et al. 2016

AIP Advances

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“…1). [16][17] Friction forces ranging from moderate to vanishingly small were obtained depending on the degree of commensurability between the lattices of the flake and the extended surface. The ability to achieve such a state of ultra-low friction, often termed a superlubric state, [18][19][20][21][22][23][24][25][26][27] is clearly of high interest both from the basic scientific perspective of nanotribology [28][29][30][31][32][33][34][35][36][37][38][39][40][41] and in light of the promising technological opportunities it carries.…”

mentioning

confidence: 99%

Interlayer commensurability and superlubricity in rigid layered materials

Hod

2012

Phys. Rev. B

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Superlubricity is a frictionless tribological state sometimes occurring in nanoscale material junctions. It is often associated with incommensurate surface lattice structures appearing at the interface. Here, by using the recently introduced registry index concept which quantifies the registry mismatch in layered materials, we prove the existence of a direct relation between interlayer commensurability and wearless friction in layered materials. We show that our simple and intuitive model is able to capture, down to fine details, the experimentally measured frictional behavior of a hexagonal graphene flake sliding on-top of the surface of graphite. We further predict that superlubricity is expected to occur in hexagonal boron nitride as well with tribological characteristics very similar to those observed for the graphitic system. The success of our method in predicting experimental results along with its exceptional computational efficiency opens the way for modeling large-scale material interfaces way beyond the reach of standard simulation techniques.

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“…When out-of-registry, the potential corrugation is minimized and the nanotube easily slides along the substrate with very little resistance. This same effect has been used to explain the lubricating properties of graphite (Dienwiebel et al 2004(Dienwiebel et al , 2005.…”

Section: Friction Of Crystalline Surfaces (A ) Friction Of Diamondmentioning

confidence: 94%

“…Mate et al (1987) had speculated that the atomic-scale periodicity apparent in their friction scans was caused by a graphite flake that had adhered to the tip of the AFM, thus creating a graphite-graphite sliding interface. Despite a post-friction experiment transmission electron microscopy (TEM) analysis of the tip by Dienwiebel et al (2004Dienwiebel et al ( , 2005, no evidence of the flake was obtained. Recent in situ TEM analysis of a tungsten tip sliding against graphite has demonstrated the existence of a graphite flake on the tip during sliding (Merkle & Marks 2007).…”

Section: Friction Of Crystalline Surfaces (A ) Friction Of Diamondmentioning

confidence: 99%

Friction between solids

Harrison

Gao

Schall

et al. 2007

Phil. Trans. R. Soc. A.

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The theoretical examination of the friction between solids is discussed with a focus on self-assembled monolayers, carbon-containing materials and antiwear additives. Important findings are illustrated by describing examples where simulations have complemented experimental work by providing a deeper understanding of the molecular origins of friction. Most of the work discussed herein makes use of classical molecular dynamics (MD) simulations. Of course, classical MD is not the only theoretical tool available to study friction. In view of that, a brief review of the early models of friction is also given. It should be noted that some topics related to the friction between solids, i.e. theory of electronic friction, are not discussed here but will be discussed in a subsequent review.

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Model experiments of superlubricity of graphite

Cited by 177 publications

References 52 publications

An atomistic investigation of the effect of strain on frictional properties of suspended graphene

An atomistic investigation of the effect of strain on frictional properties of suspended graphene

Interlayer commensurability and superlubricity in rigid layered materials

Friction between solids

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