RT Journal Article
T1 Anisotropy Effects in Atomic-Scale Friction
A1 Gnecco, Enrico
A1 Fajardo, O.Y.
A1 Pina Martínez, Carlos Manuel
A1 Juan J., Mazo
AB The static and kinetic friction experienced by a point mass elastically driven at different angles on surface lattices with square, hexagonal, and honeycomb symmetries are estimated by analytical and numeric calculations based on the Prandtl–Tomlinson (PT) model. Assuming a strong surface coupling, the anisotropy of static friction increases from 3.7 up to 46.3% when the density of packing of the surface atoms is reduced, but this is not the case for kinetic friction, the anisotropy of which is maximal on a square lattice. Although these results have not been supported by accurate experimental verifications so far, the PT model was successfully applied to interpret anisotropy effects in the friction force profiles measured, among other surfaces, on rectangular lattices with complex unit cells and on stepped crystal surfaces.
PB Springer Verlag
SN 1573-2711 /  (ISSN-L): 1023-8883
YR 2012
FD 2012
LK https://hdl.handle.net/20.500.14352/42852
UL https://hdl.handle.net/20.500.14352/42852
LA eng
NO "Esta es una versión pre-editada, posterior a la revisión por pares, de un artículo publicado en Tribology letters (Dordrecht. Online). La versión autenticada final está disponible en línea en: http://dx.doi.org/10.1007/s11249-012-9923-x
NO Ministerio de Ciencia e Innovación (MICINN)/FEDER
DS Docta Complutense
RD 30 abr 2024