Pervasive orientational and directional locking at geometrically heterogeneous sliding interfaces

Abstract

Understanding the drift motion and dynamical locking of crystalline clusters on patterned substrates is important for the diffusion and manipulation of nano- and micro-scale objects on surfaces. In a previous work, we studied the orientational and directional locking of colloidal two-dimensional clusters with triangular structure driven across a triangular substrate lattice. Here we show with experiments and simulations that such locking features arise for clusters with arbitrary lattice structure sliding across arbitrary regular substrates. Similar to triangular-triangular contacts, orientational and directional locking are strongly correlated via the real- and reciprocal-space moiré patterns of the contacting surfaces. Due to the different symmetries of the surfaces in contact, however the relation between the locking orientation and the locking direction becomes more complicated compared to interfaces composed of identical lattice symmetries. We provide a generalized formalism which describes the relation between the locking orientation and locking direction with arbitrary lattice symmetries.

Published in Physical Review E. 17 pages and 10 figures including supplementary information

References in corpus (14)

• Double-slit photoelectron interference in strong-field ionization of the neon dimer
• The Physics of the Colloidal Glass Transition
• Growth of nanostructures by cluster deposition : a review
• Phase Locking, Devil's Staircases, Farey Trees, and Arnold Tongues in Driven Vortex Lattices with Periodic Pinning
• Diffusion of gold nanoclusters on graphite
• Fast diffusion of graphene flake on graphene layer
• Engineering of frustration in colloidal artificial ices realized on microfeatured grooved lattices
• Experimental observation of directional locking and dynamical ordering of colloidal monolayers driven across quasiperiodic substrates
• (In)commensurability, scaling and multiplicity of friction in nanocrystals and application to gold nanocrystals on graphite
• Hindered rolling and friction anisotropy in supported carbon nanotubes
• Dynamical Ordering and Directional Locking For Particles Moving Over Quasicrystalline Substrates
• Experimental observation of the Aubry transition in two-dimensional colloidal monolayers
• Collective Directional Locking of Colloidal Monolayers on a Periodic Substrate
• Slider Thickness Promotes Lubricity: from 2D Islands to 3D Clusters

Cited by in corpus (5)

• The twisting dynamics of large lattice mismatch van der Waals heterostructures
• Clogging, Dynamics and Reentrant Fluid for Active Matter on Periodic Substrates
• Moiré-pattern evolution couples rotational and translational friction at crystalline interfaces
• Evidence of directional structural superlubricity and Lévy flights in a van der Waals heterostructure
• Tuning the Stability of a Model Quasicrystal and its Approximants with a Periodic Substrate