Year: 2026
Type: preprint
Abstract: Under a thermodynamic gradient, for example, the concentration or temperature gradients, the colloidal particles immersed in the solvent can exhibit a directional migration along or against the gradient---phoresis, a cross transport effect. When the solvent is an odd fluid, where the time-reversal and parity symmetries are broken microscopically, the odd transport phenomenon is allowed. This means an odd phoresis may appear: the colloidal particle migrates perpendicularly to the thermodynamic gradient. Here, we realize the odd diffusiophoresis and odd thermophoresis for a colloidal particle immersed in a two-dimensional odd fluid by performing mesoscale fluid simulations. We quantify the odd phoretic factors and further provide the phoresis-osmotic flow field driven by a phoretic colloidal particle, which is quantitatively consistent with the numerical solutions of the corresponding odd fluid dynamics equations.
Source: arXiv (Cornell University)
Authors: Jiao, Yuxing, Yang, Qing, Yang, Mingcheng
Subfield: Computational Mechanics
Field: Engineering
Domain: Physical Sciences
Open Access status: green
Awards: G6049782932, G6834610103
OpenAlex ID: W7147606579
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