English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Recent highly idealized model studies of lubricated nanofriction for twocrystalline sliding surfaces with an interposed thin solid crystallinelubricant layer showed that the overall relative velocity of the lubricant$v_{\rm lub} / v_{\rm slider}$ depends only on the ratio of the latticespacings, and retains a strictly constant value even when system parameters arevaried within a wide range. This peculiar "quantized" dynamical locking wasunderstood as due to the sliding-induced motion of misfit dislocations, orsoliton structures. So far, the practical relevance of this concept torealistic sliding three dimensional crystals has not been demonstrated. In thiswork, by means of classical molecular dynamics simulations and theoreticalconsiderations, we realize a realistic three-dimensionalcrystal-lubricant-crystal geometry. Results show that the flux of lubricantparticles associated to the advancing soliton lines gives rise here too to aquantized velocity ratio. Moreover, depending on the interface lattice spacingmismatch, both forward and backward quantized motion of the lubricant ispredicted. The persistence under realistic conditions of the dynamically pinnedstate and quantized sliding is further investigated by varying sliding speed,temperature, load, and lubricant film thickness. The possibilities ofexperimental observation of quantized sliding are also discussed.

Soliton dynamics in a solid lubricant during sliding friction