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Phase transitions of Yukawa systems under electric field
The European Physical Journal Plus ( IF 3.4 ) Pub Date : 2024-04-08 , DOI: 10.1140/epjp/s13360-024-05109-y
Muhammad Asif Shakoori , Maogang He , Aamir Shahzad , Misbah Khan , Haipeng Li

Molecular dynamics simulations have been employed to investigate the phase transition phenomena in three-dimensional strongly coupled Yukawa systems (SC-YSs) under the influence of an external uniaxial AC electric field (MT). Lattice correlation function (LCF) and radial distribution function (RDF) tests are used to investigate the phase transitions in SC-YSs with and without electric fields. The states of dust grains depend on plasma coupling (Γ), screening length (κ) and MT strength. In the absence of MT, the new calculations of LCF and RDF demonstrate the self-organization of dust grains with increasing Γ and decreasing κ. Furthermore, condensation (gas–liquid) and solidification (liquid–crystal) transitions are observed in SC-YSs with increased MT intensities and Γ values. Moreover, gas-like states of the YS require significantly higher MT intensity, while liquid-like or near solid-like states require intermediate to low MT intensity, respectively, to achieve solidification. It is illustrated that the SC-YSs exhibit electrorheological behavior that is the same as conventional electrorheological fluids. Due to these characteristics, the SC-YSs can be used to investigate the electrorheological properties of condensed and soft matter physics.



中文翻译:

电场下汤川系统的相变

分子动力学模拟已被用来研究在外部单轴交流电场( MT )影响下三维强耦合汤川系统(SC-YSs)的相变现象。晶格相关函数 (LCF) 和径向分布函数 (RDF) 测试用于研究 SC-YS 在有电场和无电场的情况下的相变。尘埃颗粒的状态取决于等离子体耦合 (Γ)、屏蔽长度 ( κ ) 和M T强度。在没有M T的情况下,LCF 和 RDF 的新计算证明了尘埃颗粒的自组织性,随着 Γ 的增加和κ 的减少。此外,随着M T强度和 Γ 值的增加,在 SC-YS 中观察到冷凝(气-液)和凝固(液晶)转变。此外,YS 的类气态需要明显更高的M T强度,而类液体或接近类固体的状态分别需要中等到低的M T强度才能实现凝固。结果表明,SC-YS 表现出与传统电流变液相同的电流变行为。由于这些特性,SC-YS 可用于研究凝聚态和软物质物理的电流变特性。

更新日期:2024-04-08
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