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

Johannes Voß; Raphael Wittkowski

doi:10.1021/acs.langmuir.2c00603

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arXiv · 2209.14857

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

Johannes Voß·Raphael Wittkowski

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Abstract

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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Johannes Voß, Raphael Wittkowski. 2022-09-29. Acoustic propulsion of nano- and microcones: dependence on the viscosity of the surrounding fluid. https://doi.org/10.1021/acs.langmuir.2c00603

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