Effect of external magnetic field on lane formation in driven pair-ion plasmas

Baruah, S.; Sarma, U.U.M.; Ganesh, R.

doi:10.1017/s0022377821000027

Cited by 5 publications

(15 citation statements)

References 53 publications

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“…In fact, the self-consistent phase transition occurs when particle correlation force effects become significantly large (Dwivedi 2000). Similar situations with two groups of particles moving in opposite directions have been extensively studied in the context of lane and pattern formations in different model systems of driven particles, such as colloidal dispersions (Vissers, van Blaaderen & Imhof 2011a;Vissers et al 2011b;Tarama, Egelhaaf & Löwen 2019), lattice gases (Schmittmann & Zia 1998), molecular ions (Netz 2003), microswimmers (Kogler & Klapp 2015) and plasmas (Sarma et al 2020;Baruah et al 2021). Although several works have already been performed concerning non-equilibrium conditions that form patterns or exhibit complex, perhaps chaotic behaviours, the mechanisms of pattern formation for non-equilibrium conditions are much less clear and are an active area of research.…”

Section: Introductionmentioning

confidence: 91%

“…In this paper, we extend the set-up previously studied in Sarma et al (2020) and Baruah et al (2021) in the following directions. First, we study -in both the presence and absence of an obstacle -the case where thee effect of geometric aspect ratio is observed.…”

Section: The Modelmentioning

confidence: 99%

“…Second, we study -for the obstacle and geometric aspect ratio -the case where an external magnetic field is applied. Therefore, for the sake of continuity of discussion, again we are presenting the same model as used in our previous studies (Sarma et al 2020;Baruah et al 2021).…”

Section: The Modelmentioning

confidence: 99%

“…Additionally, our recent work on a self-organization effect (Sarma, Baruah & Ganesh 2020) shows the formation of non-equilibrium lane formation phenomena in naturally occurring PIP systems. Furthermore, very recently we have also studied lane formation dynamics in an externally driven PIP system, where a peculiar lane formation-disintegration parameter space is identified in the presence of an external magnetic field (Baruah, Sarma & Ganesh 2021).…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, a fundamental understanding of such non-equilibrium phenomena requires the study of non-equilibrium phase transition phenomena from a 'first principles' approach. For a given interaction potential, a classical molecular dynamics simulation is a 'first principles' approach which integrates an N-particle system without any assumptions (Sarma et al 2020;Baruah et al 2021).…”

Section: Introductionmentioning

confidence: 99%

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Lane dynamics in pair-ion plasmas: effect of obstacle and geometric aspect ratio

2021

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Lane formation dynamics of driven two-dimensional pair-ion plasmas is investigated in under-damped cases where the effect of particle inertia cannot be neglected. Extensive Langevin dynamics simulations using an OpenMP parallel program are carried out to analyse the effect of obstacle and geometric aspect ratio on lane formation dynamics previously reported in Sarma et al. (Phys. Plasmas, vol. 27, 2020, 012106) and Baruah et al. (J. Plasma Phys., vol. 87, 2021, 905870202). Lanes are found to form when like particles move along or opposite to the applied field direction. Lane order parameter, cumulative order parameter and distribution of the order parameter have been implemented to detect phase transition. The effect of geometric aspect ratio on the stability of lanes is systematically determined in both the presence and absence of an obstacle. Here, a specular reflective boundary condition is implemented to mimic an obstacle. We demonstrate that an obstacle promotes the merging of lanes, and the system gradually transitions to a partially mixed phase with higher value of aspect ratio. The occurrence of lane mixing phenomena at the separation boundary of two oppositely flowing lanes at higher value of aspect ratio is observed. In the presence of an oscillatory electric field, the lane merging tendency is reduced to a large extent as compared to the system where a constant electric field is applied. Furthermore, in the presence of both space- and time-varying electric fields, an appearance of a void is observed on either side of the obstacle. The study finds that the presence of an external magnetic field promotes acceleration of the phase transition process towards the lane mixing phase; it also reveals the existence of electric field drift in the system. Our findings may prove to be useful in understanding the nature of lane dynamics in naturally occurring pair-ion plasma systems as well as their relevance to technological applications that exploit or mitigate self-organization.

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Section: Introductionmentioning

confidence: 91%

Section: The Modelmentioning

confidence: 99%

Section: The Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Lane dynamics in pair-ion plasmas: effect of obstacle and geometric aspect ratio

2021

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Numerical optimization of magnetic field application scheme for deep eutectic solvent (DES) electrolyte flow battery

Zhang,

Zhou,

et al. 2023

Journal of Power Sources

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Lane formation in 3D driven pair-ion plasmas: I Parallel External Forcing

2023

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Lane formation dynamics of driven three-dimensional pair-ion plasmas (PIP) is investigated. Extensive Langevin dynamics simulation is performed to study the influence of an external electric field on the behaviour of the PIP system. In our model, one half of the particles are pushed into the field direction by an external force $\boldsymbol {F}_{A}$ while the other half are pulled into the opposite direction by an external force $\boldsymbol {F}_{B}$ . We show that if $\boldsymbol {F}_{A}$ and $\boldsymbol {F}_{B}$ are parallel, the system undergoes a non-equilibrium phase transition from a disordered state to a lane formation state parallel to the field direction with increasing field strength. The lanes are formed by the same kind of particles moving collectively with the field. The lane order parameter has been implemented to detect phase transition. Further, we show the lane formation in the presence of a time-varying external electric field. In particular, the effect of parallel forces are investigated. Unlike the previously reported two-dimensional case (Sarma, et al., Phys. Plasmas, vol. 27, 2020, p. 012106; Baruah, et al., J. Plasma Phys., vol. 87, issue 2, 2021, p. 905870202), for the time-varying electric field case, spontaneous formation and the breaking of lanes are not observed for all values of applied frequencies; however, the orderness varies and spontaneous formation and breaking of lanes is observed for values close to a critical frequency $\omega _c$ . Further, some aspects of the lane formation dynamics of a PIP system are also studied in the presence of an external magnetic field, which reveals that the presence of an external magnetic field accelerates the lane formation process and introduces a drift of the lanes in a direction perpendicular to both electric and magnetic fields.

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Effect of external magnetic field on lane formation in driven pair-ion plasmas

Cited by 5 publications

References 53 publications

Lane dynamics in pair-ion plasmas: effect of obstacle and geometric aspect ratio

Lane dynamics in pair-ion plasmas: effect of obstacle and geometric aspect ratio

Numerical optimization of magnetic field application scheme for deep eutectic solvent (DES) electrolyte flow battery

Lane formation in 3D driven pair-ion plasmas: I Parallel External Forcing

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