Friction mechanisms of graphite from a single-atomic tip to a large-area flake tip

Miura, Kouji; Sasaki, Naruo; Kamiya, Shu

doi:10.1103/physrevb.69.075420

Cited by 67 publications

(45 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2g) More rigorous microscopic understanding of the interlayer sliding process in layered materials has been obtained using sophisticated molecular dynamics simulations, [54][55][56][57][58] semi-empirical approaches, 59 and first-principles [50][51]53,[60][61][62][63][64][65][66] calculations. 67 Such simulations adopt either a phenomenological [68][69][70][71][72][73][74] approach such as the Prandtl In this paper we use the recently developed concept of the registry index (RI), 50,94 which gives a quantitative measure of the degree of commensurability between two lattices, to elucidate the observed interplay between interlayer registry and wearless sliding friction in layered materials. As previously speculated, a direct relation between the interlayer registry and the measured interlayer sliding friction is obtained for the case of graphene.…”

Section: Fig 1: Commensurate (Panels (A) and (B)) And Incommensuratementioning

confidence: 99%

Interlayer commensurability and superlubricity in rigid layered materials

Hod

2012

Phys. Rev. B

View full text Add to dashboard Cite

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.

show abstract

Section: Fig 1: Commensurate (Panels (A) and (B)) And Incommensuratementioning

confidence: 99%

Interlayer commensurability and superlubricity in rigid layered materials

Hod

2012

Phys. Rev. B

View full text Add to dashboard Cite

show abstract

“…Since the first experiments of Mate et al in 1987 [1] many works have been performed to study the dependence of the nanotribological properties on the load [2][3][4][5], scan velocity [6][7][8][9][10][11][12][13][14][15][16][17][18][19], and atmosphere [20][21][22]. In the last decade, great debates are engaged on the velocity dependence of friction mainly because of contradictory results reported in literature.…”

Section: Introductionmentioning

confidence: 99%

Speed and Atmosphere Influences on Nanotribological Properties of NbSe2

Bilas¹,

Romana²,

Bade³

et al. 2008

Tribol Lett

View full text Add to dashboard Cite

Nanotribological properties of NbSe 2 are studied using an atomic friction force microscope. The friction force is measured as a function of normal load and scan speeds ranging from 10 nm s -1 to 40 lm s -1 under two atmospheres (air and argon). At low speed, no effect of atmosphere is noticed and a linear relationship between the friction and normal forces is observed leading to a friction coefficient close to 0.02 for both atmospheres. At high speed, the tip/surface contact obeys the JKR theory and the tribological properties are atmosphere dependent: the shear stress measured in air environment is three times lower than the one measured under argon atmosphere. A special attention is paid to interpret these results through numerical data obtained from a simple athermal model based on Tomlinson approach.

show abstract

“…The order of magnitude of the position of the potential barrier, x  , is comparable to that of the atomic-scale distance between the neighboring stable AB-stacking positions within x-y plane. Here the AB-stacking registry formed between a graphite flake and a graphite substrate surface is considered (Miura et al, 2003(Miura et al, , 2004. This indicates that the peeling of the MWCNT starts when the outermost graphene sheet of the MWCNT goes over the potential barrier of the AB-stacking registry with the graphite substrate surface, as depicted in the lower part of Fig.…”

Section: Resultsmentioning

confidence: 99%