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A lattice Boltzmann model for self-diffusophoretic particles near and at liquid-liquid interfaces

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We introduce a novel mesoscopic computational model based on a multiphase-multicomponent lattice Boltzmann method for the simulation of self-phoretic particles in the presence of liquid-liquid interfaces. Our model features fully resolved solvent hydrodynamics and, thanks to its versatility, it can handle important aspects of the multiphysics of the problem, including particle wettability and differential solubility of the product in the two liquid phases. The method is extensively validated in simple numerical experiments, whose outcome is theoretically predictable, and then applied to the study of the behaviour of active particles next to and trapped at interfaces. We show that their motion can be variously steered by tuning relevant control parameters, such as the phoretic mobilities, the contact angle and the product solubility.

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(c) American Institute of Physics (AIP), 2022

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Articles publicats en revistes (Física de la Matèria Condensada)

# metadata.dc.title[].value
A lattice Boltzmann model for self-diffusophoretic particles near and at liquid-liquid interfaces