Pinning and Dynamics of Colloids on One Dimensional Periodic Potentials
arXiv:cond-mat/0409561 · doi:10.1103/PhysRevE.72.032401
Abstract
Using numerical simulations we study the pinning and dynamics of interacting colloids on periodic one-dimensional substrates. As a function of colloid density, temperature, and substrate strength, we find a variety of pinned and dynamic states including pinned smectic, pinned buckled, two-phase flow, and moving partially ordered structures. We show that for increasing colloid density, peaks in the depinning threshold occur at commensurate states. The scaling of the pinning threshold versus substrate strength changes when the colloids undergo a transition from one-dimensional chains to a buckled configuration.
arXiv comment4 pages, 4 postscript figures
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- Statics and Dynamics of Yukawa Cluster Crystals on Ordered Substrates
- Tunable interactions between paramagnetic colloidal particles driven in a modulated ratchet potential
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- Phonon spectra of a two-dimensional solid dusty plasma modified by two-dimensional periodic substrates
- Collective Dynamics and Defect Generation for Wigner Crystal Ratchets
- Superlubric-pinned transition of a two-dimensional solid dusty plasma under a periodic triangular substrate