Extra low friction coefficient caused by the formation of a solid-like layer: A new lubrication mechanism found through molecular simulation of the lubrication of MoS<sub>2</sub> nanoslits

Jiahui Li; Yudan Zhu; Yumeng Zhang; Qingwei Gao; Wei Zhu; Xiaohua Lu; Yijun Shi

doi:10.1016/j.cjche.2018.02.027

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Extra low friction coefficient caused by the formation of a solid-like layer: A new lubrication mechanism found through molecular simulation of the lubrication of MoS₂ nanoslits

Fluid Dynamics and Transport Phenomena | Updated：2026-01-06

- Extra low friction coefficient caused by the formation of a solid-like layer: A new lubrication mechanism found through molecular simulation of the lubrication of MoS₂ nanoslits
- Chinese Journal of Chemical Engineering Vol. 26, Issue 12, Pages: 2412-2419(2018)
- Affiliations：
  
  1. 2 Energy Engineering, Division of Energy Science, Luleå University of Technology, Luleå,Sweden,971 87
  2. 3 Division of Machine Elements, Luleå University of Technology, Luleå,Sweden,971 87
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2018.02.027
  CLC：
- Published：2018
- Accepted：
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nanoslits[J]. Chinese Journal of Chemical Engineering, 2018, 26(12): 2412-2419.
DOI：

nanoslits[J]. Chinese Journal of Chemical Engineering, 2018, 26(12): 2412-2419. DOI： 10.1016/j.cjche.2018.02.027.

摘要

Abstract

Monolayer molybdenum disulfide (MoS

) is a novel two-dimensional material that exhibits potential application in lubrication technology. In this work

molecular dynamics was used to investigate the lubrication behaviour of different polar fluid molecules (i.e.

water

methanol and decane) confined in monolayer MoS

nanoslits. The pore width effect (i.e.

1.2

1.6 and 2.0 nm) was also evaluated. Results revealed that decane molecules exhibited good lubricating performance compared to the other two kinds of molecules. The friction coefficient followed the order of decane methanol water

and decreased evidently as the slit width increased

except for decane. Analysis of the spatial distribution and mobility of different confined fluid molecules showed that a solid-like layer was formed near the slit wall. This phenomenon led to the extra low friction coefficient of confined decane molecules.

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Extra low friction coefficient caused by the formation of a solid-like layer: A new lubrication mechanism found through molecular simulation of the lubrication of MoS2 nanoslits

DOI：10.1016/j.cjche.2018.02.027

摘要

Abstract

关键词

Keywords

references

Extra low friction coefficient caused by the formation of a solid-like layer: A new lubrication mechanism found through molecular simulation of the lubrication of MoS₂ nanoslits