Magnetic particles confined in a modulated channel: Structural transitions tunable by tilting a magnetic field

Galván-Moya, J. E.; Lucena, D.; Ferreira, W. P.; Peeters, F. M.

doi:10.1103/physreve.89.032309

Cited by 15 publications

(4 citation statements)

References 54 publications

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“…We hope that the results presented here will find direct comparison with previous work, particularly with regards to ions confined in traps [1][2][3][4][5][6][7][8][9] as well as assemblies of magnetic particles in a channels [17]. This work should also be relevant to other systems in which buckling is a key feature: for example localised buckling has recently been observed in experiments involving an expanding (growing) elastic beam pinned to a substrate [18].…”

Section: P-4mentioning

confidence: 72%

Equilibrium configurations of hard spheres in a cylindrical harmonic potential

Winkelmann¹,

Mughal²,

Weaire³

et al. 2019

EPL

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PACS 45.70.-n -Granular systems PACS 47.57.-s -Complex fluids and colloidal systems PACS 61.50.Ah -Theory of crystal structure, crystal symmetry; calculations and modelingAbstract -A line of hard spheres confined by a transverse harmonic potential, with hard walls at its ends, exhibits a variety of buckled structures as it is compressed longitudinally. Here we show that these may be conveniently observed in a rotating liquid-filled tube (originally introduced by Lee et al. [T. Lee, K. Gizynski, and B. Grzybowski, Adv. Mater. 29, 1704274 (2017)] to assemble ordered three dimensional structures at higher compressions). The corresponding theoretical model is transparent and easily investigated numerically, as well as by analytic approximations. Hence we explore a wide range of predicted structures occurring via bifurcation, of which the stable ones are also observed in our experiments. Qualitatively similar structures have previously been found in trapped ion systems.

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Section: P-4mentioning

confidence: 72%

Equilibrium configurations of hard spheres in a cylindrical harmonic potential

Winkelmann¹,

Mughal²,

Weaire³

et al. 2019

EPL

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“…Le Doussal et al showed that in a d-dimensional two-layer model, both continuous and sharp dynamical transitions can occur if plasticity between the two layers is allowed [156]. Experimental realizations of systems of interacting particles confined in one to three layers can be achieved for vortices in mesoscopic channels [157], coupled 1D Wigner crystal wires [158], colloidal systems [159], dusty plasmas [160], and ions in line traps [161]. Reichhardt and Reichhardt [162] considered Yukawa repulsively interacting particles in two coupled 1D channels separated by an interchannel distance d in the presence of random pinning.…”

Section: Systems With Few Layersmentioning

confidence: 99%

Depinning and nonequilibrium dynamic phases of particle assemblies driven over random and ordered substrates: a review

2016

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Abstract. 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 vortices in type-II superconductors, sliding charge density waves, electron crystals, colloids, stripe and pattern forming systems, and skyrmions, and could also have connections to jamming, glassy behaviors, and active matter. These systems are also ideal for exploring the broader issues of characterizing transient and steady state nonequilibrium flow phases as well as nonequilibrium phase transitions between distinct dynamical phases, analogous to phase transitions between different equilibrium states. We discuss the differences between elastic and plastic depinning on random substrates and the different types of nonequilibrium phases which are associated with specific features in the velocity-force curves, fluctuation spectra, scaling relations, and local or global particle ordering. We describe how these quantities can change depending on the dimension, anisotropy, disorder strength, and the presence of hysteresis. Within the moving phase we discuss how there can be a transition from a liquid-like state to dynamically ordered moving crystal, smectic, or nematic states. Systems with periodic or quasiperiodic substrates can have multiple nonequilibrium second or first order transitions in the moving state between chaotic and coherent phases, and can exhibit hysteresis. We also discuss systems with competing repulsive and attractive interactions, which undergo dynamical transitions into stripes and other complex morphologies when driven over random substrates. Throughout this work we highlight open issues and future directions such as absorbing phase transitions, nonequilibrium work relations, inertia, the role of non-dissipative dynamics such as Magnus effects, and how these results could be extended to the broader issues of plasticity in crystals, amorphous solids, and jamming phenomena.

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“…(Lucena et al, 2012;Carvalho et al, 2012;Carvalho et al, 2011) for different damping values (Delfau et al, 2011) and different connement intensities and traps in a monodisperse system of interacting particles (Lucena et al, 2012). Single-file diffusion are also present in nature in many different situations such as diffusion experiments with molecules of zeolite (Meier, 1992), in colloids (Konig, 2005;Wei, 2000), charged macroscopic beads (Coupier et al, 2006) and water through molecular-sized channels in membranes (Hernandez, 1992;Morais-Cabral et al, 2001;Doyle et al, 1998) and for magnetic particles and dipoles (Lucena et al, 2014;Galvan-Moya et al, 2014). In SFD, particles are correlated because particle movement induces other particles to move together.…”

Section: Introductionmentioning

confidence: 99%

Diffusive properties of colloidal charged particles in a quasi-one-dimensional confinement

Leite

Araújo

Xavier

et al. 2021

RSD

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Diffusive properties of colloidal crystals in a quasi-one-dimensional channel are studied using numerical simulations. In order to study the influence of the attractive interaction between particles, it was introduced as an artificial dimensionless parameter β in the attractive term of the interaction potential. Changing the value of β, we can tune the effect of attraction between particles. We show that charged particles can change their mobility and the diffusion exponent of a one-chain like system. Variation on exponent diffusion can be induced by tuning the attractive part of interaction potential, making possible the existence of diffusive regimes between single-file diffusion (SFD) and normal diffusion, without changing confinement strength. System stoichiometry was changed, imposing particles in different arrangements in small clusters, which varies the diffusive behaviour. If stoichiometry is different from 1:1, it is possible to have particles with equal charges but with different mobilities. Another important observation is that mean-square displacement (MSD) for different charges is different for different values.

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Magnetic particles confined in a modulated channel: Structural transitions tunable by tilting a magnetic field

Cited by 15 publications

References 54 publications

Equilibrium configurations of hard spheres in a cylindrical harmonic potential

Equilibrium configurations of hard spheres in a cylindrical harmonic potential

Depinning and nonequilibrium dynamic phases of particle assemblies driven over random and ordered substrates: a review

Diffusive properties of colloidal charged particles in a quasi-one-dimensional confinement

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