AI Article Synopsis
- The study examines how the thickness of few-layer graphene affects its intrinsic friction using molecular dynamics simulations.
- Friction decreases significantly as the number of layers diminishes, nearing zero with just two or three layers.
- Findings are supported by a theoretical model, highlighting the importance of dimensional effects in nanoscale friction and informing the design of graphene-based nanodevices.
Article Abstract
We report the thickness dependence of intrinsic friction in few-layer graphenes, adopting molecular dynamics simulations. The friction force drops dramatically with decreasing number of layers and finally approaches zero with two or three layers. The results, which are robust over a wide range of temperature, shear velocity, and pressure are quantitatively explained by a theoretical model with regard to lateral stiffness, slip length, and maximum lateral force, which could provide a new conceptual framework for understanding stick-slip friction. The results reveal the crucial role of the dimensional effect in nanoscale friction, and could be helpful in the design of graphene-based nanodevices.
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| http://dx.doi.org/10.1088/0957-4484/22/28/285708 | DOI Listing |
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