Advancements in understanding the lateral migration of particles have helped in enhanced separation in microfluidic devices. In this work, we investigate the effects of electrokinetics on the particle migration in a viscoelastic flow, where the electric field is applied parallel to the flow. Through experiments and theoretical analysis, we show that the interaction of electrokinetic and rheological effects can result in an enhancement in the migration by an order of magnitude. The theoretical analysis, in agreement with experiments, demonstrates that the particles can be focused at different equilibrium positions based on their intrinsic electrical properties.

中文翻译：

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粘弹性流动中电动增强的横流粒子迁移

在理解粒子横向迁移方面的进展有助于增强微流体装置的分离。在这项工作中，我们研究了电动力学对粘弹性流动中粒子迁移的影响，其中电场平行于流动施加。通过实验和理论分析，我们表明电动和流变效应的相互作用可以导致迁移增强一个数量级。与实验一致的理论分析表明，基于粒子的固有电特性，粒子可以聚焦在不同的平衡位置。