292 citations · 2.9k across the 93 of their papers we have counts for
15 papers · 1 filter
Clogging and Jamming Transitions in Periodic Obstacle Arrays
H. T. Nguyen, C. Reichhardt, C. J. Olson Reichhardt
We numerically examine clogging transitions for bidisperse disks flowing through a two dimensional periodic obstacle array. We show that clogging is a probabilistic event that occu…
Collective Transport for Active Matter Run and Tumble Disk Systems on a Traveling Wave Substrate
Cs. Sándor, A. Libál, C. Reichhardt +1
We numerically examine the transport of an assembly of active run-and-tumble disks interacting with a traveling wave substrate. We show that as a function of substrate strength, wa…
Dynamic Phases of Active Matter Systems with Quenched Disorder
Cs. Sándor, A. Libál, C. Reichhardt +1
Depinning and nonequilibrium transitions within sliding states in systems driven over quenched disorder arise across a wide spectrum of size scales ranging from atomic friction at…
Reversible Vector Ratchets for Skyrmion Systems
X. Ma, C. J. Olson Reichhardt, C. Reichhardt
We show that ac driven skyrmions interacting with an asymmetric substrate provide a realization of a new class of ratchet system which we call a vector ratchet that arises due to t…
Dynamic Control of Topological Defects in Artificial Colloidal Ice
A. Libal, C. Nisoli, C. Reichhardt +1
We demonstrate the use of an external field to stabilize and control defect lines connecting topological monopoles in spin ice. For definiteness we perform Brownian dynamics simula…
Emergent Geometric Frustration of Artificial Magnetic Skyrmion Crystals
Fusheng Ma, C. Reichhardt, Weiliang Gan +2
Magnetic skyrmions have been receiving growing attention as potential information storage and magnetic logic devices since an increasing number of materials have been identified th…
Structural Transitions and Hysteresis in Clump- and Stripe-Forming Systems Under Dynamic Compression
D. McDermott, C. J. Olson Reichhardt, C. Reichhardt
Using numerical simulations, we study the dynamical evolution of particles interacting via competing long-range repulsion and short-range attraction in two dimensions. The particle…
Dewetting and Spreading Transitions for Active Matter on Random Pinning Substrates
Cs. Sándor, A. Libál, C. Reichhardt +1
We show that sterically interacting self-propelled disks in the presence of random pinning substrates exhibit transitions among a variety of different states. In particular, from a…
Shapiro Spikes and Negative Mobility for Skyrmion Motion on Quasi-One-Dimensional Periodic Substrates
C. Reichhardt, C. J. Olson Reichhardt
Using a simple numerical model of skyrmions in a two-dimensional system interacting with a quasi-one dimensional periodic substrate under combined dc and ac drives where the dc dri…
Collective Ratchet Effects and Reversals for Active Matter Particles on Quasi-One-Dimensional Asymmetric Substrates
D. McDermott, C. J. Olson Reichhardt, C. Reichhardt
Using computer simulations, we study a two-dimensional system of sterically interacting self-mobile run-and-tumble disk-shaped particles with an underlying periodic quasi-one-dimen…
Magnus-Induced Dynamics of Driven Skyrmions on a Quasi-One-Dimensional Periodic Substrate
C. Reichhardt, C. J. Olson Reichhardt
We numerically examine driven skyrmions interacting with a periodic quasi-one dimensional substrate where the driving force is applied either parallel or perpendicular to the subst…
Drive Dependence of the Skyrmion Hall Effect in Disordered Systems
C. Reichhardt, C. J. Olson Reichhardt
Using a particle-based simulation model, we show that quenched disorder creates a drive-dependent skyrmion Hall effect as measured by the change in the ratio o…
Ratchet Effects in Active Matter Systems
C. J. Olson Reichhardt, C. Reichhardt
Ratchet effects can arise for single or collectively interacting Brownian particles on an asymmetric substrate when a net dc transport is produced by an externally applied ac drivi…
Pinning, Flux Diodes, and Ratchets for Vortices Interacting with Conformal Pinning Arrays
C. J. Olson Reichhardt, Y. L. Wang, Z. L. Xiao +4
A conformal pinning array can be created by conformally transforming a uniform triangular pinning lattice to produces a new structure in which the six-fold ordering of the original…
Depinning and nonequilibrium dynamic phases of particle assemblies driven over random and ordered substrates: a review
C. Reichhardt, C. J. Olson Reichhardt
We review the depinning and nonequilibrium phases of collectively interacting particle systems driven over random or periodic substrates. This type of system is relevant to vortice…