Nanofriction studies of reactively or non-reactively cluster-eroded single crystal diamond
Institut für Mikrostrukturtechnik der Universität Karlsruhe und des
Forschungszentrums Karlsruhe, Postfach 3640, 76021 Karlsruhe, Germany
Corresponding author: a email@example.com
Published online: 13 July 2005
Friction properties of cluster-eroded surfaces of synthetic single crystal diamond (Monodite) are compared after erosion with high-speed CO2 cluster beams as well as with corresponding Ar cluster beams, the cluster impact kinetic energy being 100 keV in both cases. The respective friction values are determined by atomic force microscope measurements. Using CO2 clusters, the reactive accelerated cluster erosion (RACE) of the single crystal diamond substrates leads to more than seven times higher friction values than those observed after erosion with non-reactive accelerated Ar clusters. Molecular dynamics calculations reveal related differences in the simulations of respective single cluster impacts already at 2 ps after impact.
PACS: 36.90.+f – Other exotic atoms and molecules; macromolecules; clusters / 62.20.Qp – Tribology and hardness / 68.35.Af – Atomic scale friction / 81.65.Ps – Polishing, grinding, surface finishing / 82.65.+r – Surface and interface chemistry; heterogeneous catalysis at surfaces
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2005