Tunable superlubricity of 2-dimensional materials

Bonn, Daniel; Frenken, J.W.M.

doi:10.1073/pnas.1918084116

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…It is used to realize the active control of friction by analyzing surfaces or lubricating materials that respond specifically to external stimuli such as light, electricity, heat, or magnetism. [ 1–8 ]…”

Section: Introductionmentioning

confidence: 99%

Relationship between Viscosity and Resistance of Oil Film: A New Way to Investigate the Controllable Friction between Charged Interfaces Lubricated by Ionic Lubricating Oil

Zhang

Chen

Liu

et al. 2022

Adv Materials Inter

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Intelligent lubricating materials can control the coefficient of friction between interfaces in response to external stimuli. Considering that mechanical transmission parts are mostly used in oil‐based lubrication environments, the lubrication performance and electrical regulation mechanism of poly‐α‐olefin‐50 (PAO50), a lubricating oil, containing 1‐octyl‐3‐methylimidazolium hexafluorophosphate ([OMIm]PF6), an ionic liquid (IL), are investigated in this study. Friction tests on a universal micro‐tribometer under current stimulation show that ionic lubricating oil has an excellent lubrication performance and electrical responsiveness. By changing the current strength, ion content, and the load, the reasons behind the change in the coefficient of friction are investigated. Ion aggregation results in an increase in the viscosity of the lubricating oil film, which leads to an increase in the coefficient of friction. Moreover, the real‐time resistance value of the oil film is obtained through a self‐built voltage acquisition device. The mechanism of the electronic control of friction is verified by analyzing the influence of the change in ion distribution on the resistance of the oil film. There is a correlation between the resistance and viscosity of the oil film. The results of this study may be significant in guiding research on the intelligent control of friction under oil‐based lubrication.

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Section: Introductionmentioning

confidence: 99%

Relationship between Viscosity and Resistance of Oil Film: A New Way to Investigate the Controllable Friction between Charged Interfaces Lubricated by Ionic Lubricating Oil

Zhang

Chen

Liu

et al. 2022

Adv Materials Inter

View full text Add to dashboard Cite

show abstract

“…However, the liquid lubricants are not environmentallyfriendly chemicals, and when the liquid lubricants are discharged, they can destroy the ecosystem and have a great adverse effect on the ecological environment. For that reason, regulations and restrictions on their use are getting amplified [5,6]. As an alternative material to liquid lubricants, solid lubricants are being actively investigated, and through the researches, it has been found that the solid lubricants are more stable and more wear-resistant than the liquid lubricants under severe conditions such as with heavy load and high speed [7].…”

Section: Introductionmentioning

confidence: 99%

Recent development in friction of 2D materials: from mechanisms to applications

et al. 2021

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Two-dimensional (2D) materials with a layered structure are excellent candidates in the field of lubrication due to their unique physical and chemical properties, including weak interlayer interaction and large specific surface area. For the last few decades, graphene has received lots of attention due to its excellent properties. Besides graphene, various new 2D materials (including MoS2, WS2, WSe2, NbSe2, NbTe2, ReS2, TaS2 and h-BN etc.) are found to exhibit a low coefficient of friction at the macro- and even micro-scales, which may lead to widespread application in the field of lubrication and anti-wear. This article focuses on the latest development trend in 2D materials in the field of tribology. The review begins with a summary of widely accepted nano-scale friction mechanisms contain surface friction mechanism and interlayer friction mechanism. The following sections report the applications of 2D materials in lubrication and anti-wear as lubricant additives, solid lubricants, and composite lubricating materials. Finally, the research prospects of 2D materials in tribology are presented.

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The Role of Two-Dimensional Materials in Superlubricity on Friction and Wear-Prone Surfaces

Vargas-Bernal

2022

Handbook of Research on Tribology in Coatings and Surface Treatment

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Moving mechanical systems create a lot of friction; therefore, a lot of the energy produced is used to overcome it. It is vital to find unique ways to develop lubricants that allow for more effective control or decrease friction to reach a sustainable future. High friction, if not efficiently reduced or controlled, can result in higher wear losses and, as a result, shorter system life and lower reliability. Two-dimensional (2D) materials have distinct friction and wear properties from their three-dimensional (3D) counterparts. They can be used as additives in oils and composites to reduce stiction, friction, and wear, even though they are ultra-thin even with numerous layers. The role of these materials in superlubricity on surfaces prone to friction and wear is discussed in this chapter. These materials are solid two-dimensional lubricants that can address developing needs in mechanical systems in motion in current and emergent real-world applications.

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Tunable superlubricity of 2-dimensional materials

Cited by 3 publications

References 8 publications

Relationship between Viscosity and Resistance of Oil Film: A New Way to Investigate the Controllable Friction between Charged Interfaces Lubricated by Ionic Lubricating Oil

Relationship between Viscosity and Resistance of Oil Film: A New Way to Investigate the Controllable Friction between Charged Interfaces Lubricated by Ionic Lubricating Oil

Recent development in friction of 2D materials: from mechanisms to applications

The Role of Two-Dimensional Materials in Superlubricity on Friction and Wear-Prone Surfaces

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