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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Park {\it et al.} have reported eight times greater atomic-scale friction inthe periodic than in the quasiperiodic direction on the two-fold face of adecagonal Al-Ni-Co quasicrystal. We present results of molecular-dynamicssimulations intended to elucidate mechanisms behind this giant frictionalanisotropy. Simulations of a bare atomic-force-microscope tip on several modelsubstrates and under a variety of conditions failed to reproduce experimentalresults. On the other hand, including the experimental passivation of the tipwith chains of hexadecane thiol, we reproduce qualitatively the experimentalanisotropy in friction, finding evidence for entrainment of the organic chainsin surface furrows parallel to the periodic direction.

Atomistic Simulation of frictional anisotropy on quasicrystal approximant surfaces