在电动力学乳液中形成不平衡结构.
Jeremy I Kach1, Lynn M Walker1, Aditya S Khair1
1Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA. akhair@andrew.cmu.edu.
Soft matter
|November 24, 2023
概括
电动力学 (EHD) 和介电泳 (DEP) 在乳液中驱动复杂的集体行为. 这些力量产生动态相互作用,导致2D和3D模拟中的集群,结晶和新型结构.
科学领域:
- 流体动力学 流体动力学
- 软物质物理学 软物质物理学
- 电动运动学 电动运动学
背景情况:
- 应用于低导电性的流体的电场产生电动力学 (EHD) 流.
- 乳液中的滴体会经历来自邻居的EDH流和介电泳 (DEP) 力量.
- 滴滴之间的相互作用对于理解乳液集体动态至关重要.
研究的目的:
- 探索乳液的集体动态与经历合EHD和DEP相互作用的滴.
- 模拟和分析大量2D和3D滴滴中出现的行为.
- 为了研究多聚分散乳液中非相互相互作用的影响.
主要方法:
- 数字模拟大量的互动滴在2D和3D.
- 电动力学 (EHD) 流体流量的建模.
- 在滴滴之间模拟电离力 (DEP) 力量.
主要成果:
- 在2D中,单分散乳液表现出基于EHD/DEP平衡的聚合或结晶.
- 在3D中,EHD抑制了DEP诱导的链条形成,导致不同的结构.
- 聚分散乳液中的非相互相互作用产生活性二聚体,三聚体,分层链和动态板.
结论:
- EHD和DEP力量的相互作用导致了丰富的各种新兴的集体行为在乳液中.
- 模拟显示了在2D和3D中不同的结构构成,这取决于EHD或DEP的主导地位.
- 非互惠的相互作用引入复杂的,持久的动态,包括活跃的集群和动态表.
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