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To stick or not to stick: Predicting particle capture on a surface in a microchannel

Abstract : Particle adhesion on a surface is a central mechanism in microsystems, from labeled nano/micro-particle adhesion on a functional surface to wall fouling. We show the significant effect of the coupling of both diffusion and inertial hydrodynamics effects at small Reynolds number, leading to a continuum from total adhesion up to no adhesion. Using a rational approach including experiments, numerical simulations and modeling, we unify in a new model the adhesion problem by introducing a new dimensionless number involving only hydrodynamics parameters. We show that adhesion can be switched on or off using only geometrical and fluidic parameters. © 2020 CBMS-0001
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https://hal.archives-ouvertes.fr/hal-03103429
Contributor : Laurent Jonchère Connect in order to contact the contributor
Submitted on : Friday, January 8, 2021 - 10:14:53 AM
Last modification on : Friday, August 5, 2022 - 2:58:08 PM

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  • HAL Id : hal-03103429, version 1

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Donatien Mottin, Florence Razan, Frédéric Kanoufi, Marie-Caroline Jullien. To stick or not to stick: Predicting particle capture on a surface in a microchannel. 24th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2020, Oct 2020, Palm Springs, United States. pp.232-233. ⟨hal-03103429⟩

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