论文标题

纳米和微孔的声学推进:依赖周围流体的粘度

Acoustic propulsion of nano- and microcones: dependence on the viscosity of the surrounding fluid

论文作者

Voß, Johannes, Wittkowski, Raphael

论文摘要

本文研究了暴露于行进超声波的锥形胶体颗粒的声推进如何取决于颗粒周围的流体的粘度。使用Acoustofluidic计算机模拟,我们发现这种纳米和微孔的推进强烈降低,甚至会改变剪切粘度的迹象。相比之下,我们发现推进对大块粘度的依赖性较弱。获得的结果与以前的理论和实验研究的发现一致。

This article investigates how the acoustic propulsion of cone-shaped colloidal particles that are exposed to a traveling ultrasound wave depends on the viscosity of the fluid surrounding the particles. Using acoustofluidic computer simulations, we found that the propulsion of such nano- and microcones decreases strongly and even changes sign for increasing shear viscosity. In contrast, we found only a weak dependence of the propulsion on the bulk viscosity. The obtained results are in line with the findings of previous theoretical and experimental studies.

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