2020
DOI: 10.1021/acs.langmuir.0c02005
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Elastohydrodynamic Dewetting of Thin Liquid Films: Elucidating Underwater Adhesion of Topographically Patterned Surfaces

Abstract: In underwater adhesion of a topographically patterned surface with a very soft material such as human skin, the elastic deformation can be large enough to achieve solid-on-solid contact not only on top of the hills but also in the valleys of the substrate topography. In this context, we have studied the dynamics of dewetting of a thin liquid film confined between a rigid, periodic micropillar array and a soft, elastic sphere. In our experiments, we observed two very distinct dewetting morphologies. For large r… Show more

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Cited by 6 publications
(3 citation statements)
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“…[ 5–7 ] Surface roughness further complicates the situation as the area of solid‐solid contact is reduced and, in addition, liquids can remain in the grooves and dimples of the surface or cause leakage due to percolation. [ 8–10 ] Robust solutions for this adhesion problem have repeatedly been realized in the biological world. [ 11 ]…”
Section: Introductionmentioning
confidence: 99%
“…[ 5–7 ] Surface roughness further complicates the situation as the area of solid‐solid contact is reduced and, in addition, liquids can remain in the grooves and dimples of the surface or cause leakage due to percolation. [ 8–10 ] Robust solutions for this adhesion problem have repeatedly been realized in the biological world. [ 11 ]…”
Section: Introductionmentioning
confidence: 99%
“…Wet sliding on a textured surface also conforms to the fundamental laws of lubrication for soft flat control [82]; this, along with the surface wettability and geometrical parameter designs, allows the texture to exhibit diversified performances at the "triboactive" interface. In general, the wet friction force trend on a textured surface with respect to sliding velocity resembles that of flat control (i.e., the friction force decreases under increasing velocity) [76,83].…”
Section: Design Of Surface Textures For Reducing Friction Forcementioning
confidence: 90%
“…Since the rate of separation is proportional to the hydrodynamic force, system compliance reduces adhesion [19]. By contrast, elastic surfaces likely deform in the presence of hydrodynamic forces, which in turn determine the shape and expansion of the gap [16,[20][21][22].…”
Section: Introductionmentioning
confidence: 99%