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Lubrication forces depend to a high degree on elasticity, texture, charge,chemistry, and temperature of the interacting surfaces. Therefore, byappropriately designing surface properties, we may tailor lubrication forces toreduce friction, adhesion and wear between sliding surfaces or controlrepulsion, assembly, and collision of interacting particles. Here, we show thatvariations of slippage on one of the contacting surfaces induce a lift force.We demonstrate the consequences of this force on the mobility of a cylindertraveling near a wall and show the emergence of particle oscillation andmigration that would not otherwise occur in the Stokes flow regime.Our studyhas implications for understanding how inhomogeneous biological interfacesinteract with their environment; it also reveals a new method of patterningsurfaces for controlling the motion of nearby particles.

Lift induced by slip inhomogeneities in lubricated contacts