RINEHART, Aidan; LĀCIS, Uǧis; SALEZ, Thomas; BAGHERI, Shervin

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RINEHART, Aidan
Department of Mechanical Engineering [Stockholm]

LĀCIS, Uǧis
Department of Mechanical Engineering [Stockholm]

SALEZ, Thomas
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

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Physical Review Fluids. 2020, vol. 5, p. 082001

American Physical Society

Résumé en anglais

Lubrication forces depend to a high degree on elasticity, texture, charge, chemistry, and temperature of the interacting surfaces. Therefore, by appropriately designing surface properties, we may tailor lubrication forces to reduce friction, adhesion and wear between sliding surfaces or control repulsion, assembly, and collision of interacting particles. Here, we show that variations of slippage on one of the contacting surfaces induce a lift force. We demonstrate the consequences of this force on the mobility of a cylinder traveling near a wall and show the emergence of particle oscillation and migration that would not otherwise occur in the Stokes flow regime.Our study has implications for understanding how inhomogeneous biological interfaces interact with their environment; it also reveals a new method of patterning surfaces for controlling the motion of nearby particles.< Réduire

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Laboratoire Ondes et Matière d'Aquitaine (LOMA) - UMR 5798