Atomic-Scale Sliding Friction on Graphene in Water
The sliding of a sharp nanotip on graphene completely immersed in water is investigated by molecular dynamics (MD) and atomic force microscopy. MD simulations predict that the atomicscale stick−slip is almost identical to that found in ultrahigh vacuum. Furthermore, they show that water plays a pure...
| Authors: | ; ; ; ; ; ; ; |
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| Format: | Article |
| Publication date: | 2016 |
| Country: | España |
| Institution: | Universidad Complutense de Madrid (UCM) |
| Repository: | Docta Complutense |
| Language: | English |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/23530 |
| Online Access: | https://hdl.handle.net/20.500.14352/23530 |
| Access Level: | Open access |
| Keyword: | 548 Friction Nanoscale Friction in water Friction force microscopy Nanoasperity Lattice resolution Graphene Molecular dynamics Steered molecular dynamics Vacuum Water Hydration layers Cristalografía (Geología) |
| Summary: | The sliding of a sharp nanotip on graphene completely immersed in water is investigated by molecular dynamics (MD) and atomic force microscopy. MD simulations predict that the atomicscale stick−slip is almost identical to that found in ultrahigh vacuum. Furthermore, they show that water plays a purely stochastic role in sliding (solid-to-solid) friction. These observations are substantiated by friction measurements on graphene grown on Cu and Ni, where, oppositely of the operation in air, lattice resolution is readily achieved. Our results promote friction force microscopy in water as a robust alternative to ultra-high-vacuum measurements. |
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