Hydrodynamic lift of a two-dimensional liquid domain with odd viscosity

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Abstract

We discuss hydrodynamic forces acting on a two-dimensional liquid domain that moves laterally within a supported fluid membrane in the presence of odd viscosity. Since active rotating proteins can accumulate inside the domain, we focus on the difference in odd viscosity between the inside and outside of the domain. Taking into account the momentum leakage from a two-dimensional incompressible fluid to the underlying substrate, we analytically obtain the fluid flow induced by the lateral domain motion and calculate the drag and lift forces acting on the moving liquid domain. In contrast to the passive case without odd viscosity, the lateral lift arises in the active case only when the in and out odd viscosities are different. The in-out contrast in the odd viscosity leads to nonreciprocal hydrodynamic responses of an active liquid domain.

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Hosaka, Y., Komura, S., & Andelman, D. (2021). Hydrodynamic lift of a two-dimensional liquid domain with odd viscosity. Physical Review E, 104(6). https://doi.org/10.1103/PhysRevE.104.064613

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