Physics of Fluids - Publications

Drawing liquid bridges from a thin viscous film

Open Access
Soft Matter 19, 1241–1248 (2023)

Authors

	Diana García-González
	Michiel Hack
	Michael Kappl
	Hans-Jürgen Butt
	Jacco Snoeijer

BibTeΧ

@Article{D1SM01750K,
author ="Garcia-Gonzalez, Diana and Hack, Michiel A. and Kappl, Michael and Butt, Hans-J√ºrgen and Snoeijer, Jacco H.",
title  ="Drawing liquid bridges from a thin viscous film",
journal  ="Soft Matter",
year  ="2023",
volume  ="19",
issue  ="6",
pages  ="1241-1248",
publisher  ="The Royal Society of Chemistry",
doi  ="10.1039/D1SM01750K",
url  ="http://dx.doi.org/10.1039/D1SM01750K",
abstract  ="When a particle{,} such as dust{,} contacts a thin liquid film covering a surface it is trapped by the liquid. This effect is caused by the formation of a meniscus{,} resulting in a capillary force that makes the particle adhere to the surface. While capillary adhesion is well-characterised in static situations{,} the dynamic formation of the liquid bridge after the initial contact is highly intricate. Here{,} we experimentally study the evolution of a liquid bridge after a glass sphere is gently brought into contact with a thin viscous film. It is found that the contact creates a ripple on the thin film{,} which influences the growth of the meniscus. Initially{,} the ripple and the meniscus are coupled and exhibit similar dynamics. This initial regime is well accounted for by a scaling law derived from lubrication theory. At a later stage{,} the ripple is ‚Äúdetached‚Äù from the liquid bridge{,} leading to a second regime of bridge dynamics. As a result{,} capillary forces are time-dependent{,} highlighting the importance of dynamics on adhesion."}