Moiré pattern based universal rules governing interfacial superlubricity: A case of graphene

Bai, Hao; Bao, Hongwei; Li, Yan; Xu, Haodong; Li, Suzhi; Ma, Fang

doi:10.1016/j.carbon.2022.01.047

Cited by 19 publications

(21 citation statements)

References 46 publications

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“…They showed that by twisting a certain angle, incommensurate contact was obtained, and thus the superlubricity state. Recently, Bai et al [62] proposed a misfit interval statistical method to quantitatively identify the geometric features of the Moiré pattern, in which the distribution of lattice mismatch was used as an indicator to present whether the interface was in the superlubricity state [63]. Besides, they showed that the θ and contact size played a key role in the generation of Moiré pattern and superlubricity achievement (Fig.…”

Section: Frictionmentioning

confidence: 99%

Graphene superlubricity: A review

Chai

Shi

et al. 2023

Friction

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Superlubricity has drawn substantial attention worldwide while the energy crisis is challenging human beings. Hence, numerous endeavors are bestowed to design materials for superlubricity achievement at multiple scales. Developments in graphene-family materials, such as graphene, graphene oxide, and graphene quantum dots, initiated an epoch for atomically thin solid lubricants. Nevertheless, superlubricity achieved with graphene-family materials still needs fundamental understanding for being applied in engineering in the future. In this review, the fundamental mechanisms for superlubricity that are achieved with graphene-family materials are outlined in detail, and the problems concerning graphene superlubricity and future progress in superlubricity are proposed. This review concludes the fundamental mechanisms for graphene superlubricity and offers guidance for utilizing graphene-family materials in superlubricity systems.

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Section: Frictionmentioning

confidence: 99%

Graphene superlubricity: A review

Chai

Shi

et al. 2023

Friction

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“…Superlubricity can be divided into two forms, namely, nonproportional contact and disordered solid interface superlubrication. Researchers have proven the improvements of carbon nanomaterials in mentioned two superlubrication modes to be outstanding [149][150][151]. This section summarizes the studies on fullerenes, CNTs, graphene, and NDs for superlubricity.…”

Section: Superlubricitymentioning

confidence: 99%

Recent Progress on Carbon Nanomaterials for Resisting the Wear Damages

Yin

Chen

Zhang

et al. 2022

Journal of Nanomaterials

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In recent years, carbon nanomaterials such as fullerenes, carbon nanotubes, graphene, and nanodiamonds have been regarded as versatile triboproducts such as copper coins for various engineering/commerce-scaled applications. Their large-scale usages as ideal reinforcements for the key tribomaterials are motivated by their huge interfacial areas, unique physical/chemical characteristics, as well as multiple scale load-transferring mechanisms. Numerous investigators have kept on studying the possibilities of using carbon nanomaterials as solid lubricants, lubricating additives, or the superlubricated push hand. This review offers a comprehensive discussion of up-to-date survey in carbon nanomaterials for achieving the low friction and high wear resistant in the forms of coatings, bulk materials, lubricants; or even superlubric state in the tribosystems from nanoscale to macroscale. Finally, important conclusions, foreseeable challenges, and future outlooks for carbon nanomaterials are highlighted as the concluding remarks that are needed to impulse nanotechnology maturation and developments of tribological fields such as copper coin protections.

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“…Nevertheless, it has been suggested that the commensurability of the graphene/graphene homostructure can be changed by applying a strain to the graphene layer (Dong et al, 2020). In light of the foregoing studies, it may be inferred that the superlubricity of 2D bilayers strongly depends on both the contact size and the relative misfit angle between the adjacent layers (Bai et al, 2022).…”

Section: Superlubricitymentioning

confidence: 99%

Nanoscale friction characteristics of layered-structure materials in dry and wet environments

2022

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Bulk layered materials, such as graphite and molybdenum disulfide, have long been used as solid lubricants in various industrial applications. The weak interlayer van der Waals interactions in these materials generate a low shear slip-plane, which reduces the interfacial friction. The cumulative trends toward device miniaturization have increased the need for basic knowledge of the nanoscale friction of contact-mode devices containing layered materials. Further, the decomposition and degradation of bulk layered solids subjected to shear forces are detrimental to their lubricating characteristics. Layered-structure materials, such as graphene, hexagonal boron nitride, and MXenes consisting of single or few atomic layers, behave as a new class of lubricious substances when deposited at a sliding interface. The exceptional mechanical strength, thermal conductivity, electronic properties, large theoretical specific area, and chemical inertness of these materials make them ideal antifriction materials for continuous sliding interfaces, especially when operated at elevated temperatures. These properties hold great promise for widespread applications both in dry environments, such as solid film lubrication for micro/nano-electromechanical systems, nanocomposite materials, space lubrication, and optical devices, as well as in wet environments, such as desalination membranes, lubricant additives, and nanofluidic transporters. However, accurate and reliable prediction of the frictional behavior of layered-structure materials is challenging due to the complex physicochemical transformations encountered under tribostress. The presence of a liquid in the vicinity of a surface in wet-environment applications further complicates the lubrication behavior of layered-structure materials. Furthermore, insight into the origins of interfacial friction and adhesion due to localized contact interactions can be accomplished by atomic-level experimental techniques and computational methods, such as atomic force microscope (AFM) in combination with molecular dynamics (MD) and density functional theory (DFT). The AFM setup mimics asperity-asperity contact at the atomic level and can measure the friction force of layered-structure materials, whereas MD and DFT can provide insight into the chemomechanical transformations commencing at hidden interfaces, which cannot be detected by experimental methods. The objective of this review article is threefold. First, the relationship between friction and potential energy surface is examined for different layered-structure material systems, and the parameters that mainly affect the energy corrugation are interpreted in the context of reported results. Second, the atomic-scale friction mechanisms of layered-structure materials in dry or vacuum environments are discussed in light of experimental and theoretical findings, focusing on the most crucial frictional energy dissipation mechanisms. Third, the complex mechanisms affecting the nanosccale friction of layered-structure materials incorporated in liquid media are introduced for ionic, polar, and non-polar solutions.

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Moiré pattern based universal rules governing interfacial superlubricity: A case of graphene

Cited by 19 publications

References 46 publications

Graphene superlubricity: A review

Graphene superlubricity: A review

Recent Progress on Carbon Nanomaterials for Resisting the Wear Damages

Nanoscale friction characteristics of layered-structure materials in dry and wet environments

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