Dissipative solitary waves in a two-dimensional complex plasma: Amorphous versus crystalline

Huang, Hung-Lung; Ivlev, A. V.; Nosenko, V.; Yang, Wei; Du, C.-R.

doi:10.1103/physreve.107.045205

Cited by 3 publications

(2 citation statements)

References 62 publications

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“…These results are also consistent with the experimental findings that show the solitons traveling in both amorphous and crystalline regions display similar characteristic features. [ 21 ] The prediction made by QLCA regarding the formation of multiple solitons at higher screening parameter values has also been confirmed by the MD simulation data. Previous MD simulations suggested that the high amplitude perturbation tends to form multiple soliton structures.…”

Section: Introductionsupporting

confidence: 54%

“…The results are consistent with the nonlinear QLCA model [ 12 ] and experimental findings. [ 21 ] It has been observed experimentally that solitons traveling in amorphous and crystalline regions display similar characteristic features. [ 21 ] We present a qualitative comparison of this finding with the nonlinear QLCA model later in this section.…”

Section: Numerical Simulation On Soliton‐like Profiles and Validation...mentioning

confidence: 99%

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Numerical validation of Yukawa fluid excitations within the quasilocalized charge approximation (QLCA) theory

Kumar,

Sharma

2024

Contrib. Plasma Phys

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A first principle molecular dynamics (MD) simulation study on the nonlinear excitations in a quasi‐localized state of a Yukawa system is presented to validate the findings of the nonlinear quasi‐localized charge approximation (QLCA) model. Unlike solids or gases, quasi‐localized states lack certain simplifying features, such as the ability to assume a fixed shape or volume, and they combine large displacements with strong interactions, further complicating the theoretical underpinnings of their behavior. In a recent paper [P. Kumar and D. Sharma, Physics of Plasmas 30 (2023)], the nonlinear QLCA model was applied to characterize the nonlinear excitations in a quasi‐localized state of a Yukawa system, as existing continuum models have shown limited success in this regime. The simulation data presented with the screening and coupling parameters show a close agreement with the QLCA model findings. The MD simulations validate the prediction made by the QLCA model that the properties of a soliton remain unaffected by variations in the coupling parameter. The prediction made by QLCA regarding the formation of multiple solitons at higher screening parameter values has also been confirmed by the MD simulation data. The possibility of the formation of rarefactive solitons at relatively high screening parameter values within the QLCA model is also discussed.

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Section: Introductionsupporting

confidence: 54%

Section: Numerical Simulation On Soliton‐like Profiles and Validation...mentioning

confidence: 99%

Numerical validation of Yukawa fluid excitations within the quasilocalized charge approximation (QLCA) theory

Kumar,

Sharma

2024

Contrib. Plasma Phys

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Physics and applications of dusty plasmas: The Perspectives 2023

Beckers,

Berndt,

Block

et al. 2023

Physics of Plasmas

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Dusty plasmas are electrically quasi-neutral media that, along with electrons, ions, neutral gas, radiation, and electric and/or magnetic fields, also contain solid or liquid particles with sizes ranging from a few nanometers to a few micrometers. These media can be found in many natural environments as well as in various laboratory setups and industrial applications. As a separate branch of plasma physics, the field of dusty plasma physics was born in the beginning of 1990s at the intersection of the interests of the communities investigating astrophysical and technological plasmas. An additional boost to the development of the field was given by the discovery of plasma crystals leading to a series of microgravity experiments of which the purpose was to investigate generic phenomena in condensed matter physics using strongly coupled complex (dusty) plasmas as model systems. Finally, the field has gained an increasing amount of attention due to its inevitable connection to the development of novel applications ranging from the synthesis of functional nanoparticles to nuclear fusion and from particle sensing and diagnostics to nano-contamination control. The purpose of the present perspectives paper is to identify promising new developments and research directions for the field. As such, dusty plasmas are considered in their entire variety: from classical low-pressure noble-gas dusty discharges to atmospheric pressure plasmas with aerosols and from rarefied astrophysical plasmas to dense plasmas in nuclear fusion devices. Both fundamental and application aspects are covered.

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Diagnosis of solid–liquid phase transition using hopping particles in 2D dusty plasmas

Lu,

Huang,

et al. 2024

Physics of Plasmas

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Based on the statistical analysis of particles hopping outside the cages formed by their nearest neighboring particles, a new diagnostic of the hopping particle (HP) percentage is proposed to identify the solid–liquid phase transition in two-dimensional (2D) dusty plasmas. To demonstrate the effectiveness of the HP percentage, Langevin dynamical simulations of 2D Yukawa systems under various conditions are performed to mimic 2D dusty plasmas. It is found that the HP percentage exhibits a significant jump while decreasing the coupling parameter around the melting point, just corresponding to the solid–liquid phase transition. As compared with other traditionally used diagnostics, the HP percentage diagnostic is sensitive enough, and the dynamical information is incorporated inside. By comparing to the most widely used diagnostic of the bond-angular order parameter, the melting criterion of this HP percentage diagnostic is determined to be about 30% for the suitable time interval, which is general for the 2D Yukawa systems with different screening parameters.

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Dissipative solitary waves in a two-dimensional complex plasma: Amorphous versus crystalline

Cited by 3 publications

References 62 publications

Numerical validation of Yukawa fluid excitations within the quasilocalized charge approximation (QLCA) theory

Numerical validation of Yukawa fluid excitations within the quasilocalized charge approximation (QLCA) theory

Physics and applications of dusty plasmas: The Perspectives 2023

Diagnosis of solid–liquid phase transition using hopping particles in 2D dusty plasmas

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