Nano-scale friction: A review

Kim, Hyun Joon; Kim, Dae Eun

doi:10.1007/s12541-009-0039-7

Cited by 91 publications

(50 citation statements)

References 56 publications

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“…If, on the other hand, the lattices are rotated with respect to each other (Fig. 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.…”

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

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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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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

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“…During the last decade, with the advancement of computational capability, the use of computer simulation to investigate atomic-scale interactions has been steadily increasing. Since continuum mechanics is not valid at the atomic scale, analytical methods such as Molecular Dynamics, Monte Carlo, and Ab-initio calculations have been used, as it has recently reviewed by Kim et al [5].…”

Section: Introductionmentioning

confidence: 99%

The nature of the frictional force at the macro-, micro-, and nano-scales

Broitman

2014

Friction

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Nowadays it is accepted that the friction force is a combined effect arising from various phenomena: adhesive forces, capillary forces, contact elasticity, topography, surface chemistry, and generation of a third body, etc. Any of them can dominate depending on the experimental force and length scales of the study. Typical forces in macro-tribology are in the Newtons, while are reduced to milli-/micro-Newtons, and nano-Newtons in microand nano-tribology, respectively. In this paper, experimental friction results from fullerene like CNx films and single-crystal Si at the three scales will be discussed. The complex and broad variety of processes and phenomena connected with the dry friction coefficient at the macro-, micro-, and nano-scale point of view will be highlighted.

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“…In macroscale, tribological systems experience relatively high speeds and contact stresses compared to the micro/nanoscale. Particularly, the inertial effects that are noticeable in macroscale might be negligible in micro/nanoscale [13]. Besides, Amontons and Coulomb laws that have been used for a long time to describe dry sliding friction in macro-scale are not applicable in nanoscale [14].…”

Section: Introductionmentioning

confidence: 99%

On the Sensitivity of Nanogripper-Carbon Nanotube Friction to Contact Area

Haddadi¹,

Kashani

Panahi

et al. 2017

e-J. Surf. Sci. Nanotech.

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Despite the large volume of research dedicated to the structure and functioning of nano-electromechanical systems, few researchers have addressed the practical problems involved in their manufacture and manipulation. This paper investigates the friction phenomenon in Carbon Nanotubes (CNTs) being grasped/manipulated by a nanogripper. Molecular Dynamics (MD) simulations are employed to model the combination of friction and molecular adhesion that governs the mechanical behavior of a CNT when subjected to various loads from the gripper. It is shown that for a certain gripping force, friction between the CNT and the gripper is nonlinearly proportional to the contact area up to a certain value, and remains unchanged afterwards. This is contrary to the common belief that any amount of friction force required for detaching/relocating of CNTs could be achieved by increasing the gripping force. The implications of this finding could affect the way nanogrippers are designed for the construction/manipulation of nanoparticles.

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Nano-scale friction: A review

Cited by 91 publications

References 56 publications

Interlayer commensurability and superlubricity in rigid layered materials

Interlayer commensurability and superlubricity in rigid layered materials

The nature of the frictional force at the macro-, micro-, and nano-scales

On the Sensitivity of Nanogripper-Carbon Nanotube Friction to Contact Area

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