Atomic Scale Mechanisms of Friction Reduction and Wear Protection by Graphene
Top Cited Papers
- 11 November 2014
- journal article
- research article
- Published by American Chemical Society (ACS) in Nano Letters
- Vol. 14 (12), 7145-7152
- https://doi.org/10.1021/nl5037403
Abstract
We study nanoindentation and scratching of graphene-covered Pt(111) surfaces in computer simulations and experiments. We find elastic response at low load, plastic deformation of Pt below the graphene at intermediate load, and eventual rupture of the graphene at high load. Friction remains low in the first two regimes, but jumps to values also found for bare Pt(111) surfaces upon graphene rupture. While graphene substantially enhances the load carrying capacity of the Pt substrate, the substrates intrinsic hardness and friction are recovered upon graphene rupture.Funding Information
- European Commission Directorate-General for Research and Innovation (IOF-272619)
- Deutsche Forschungsgemeinschaft (BE 4238/5-1)
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