Physics of Fluids - Publications

Escape dynamics of liquid droplets confined between soft interfaces: non-inertial coalescence cascades

Soft Matter 16, 1866–1876 (2020)

Authors

	M. Chudak
	J.S. Kwaks
	Jacco Snoeijer
	A.A. Darhuber

BibTeΧ

@Article{C9SM01992H,
author ="Chudak, Maciej and Kwaks, Jesse S. and Snoeijer, Jacco H. and Darhuber, Anton A.",
title  ="Escape dynamics of liquid droplets confined between soft interfaces: non-inertial coalescence cascades",
journal  ="Soft Matter",
year  ="2020",
volume  ="16",
issue  ="7",
pages  ="1866-1876",
publisher  ="The Royal Society of Chemistry",
doi  ="10.1039/C9SM01992H",
url  ="http://dx.doi.org/10.1039/C9SM01992H",
abstract  ="We have studied the motion of liquid droplets located in the contact zone of two soft solids that are pressed together inside a liquid. The driving force of the motion is the gradient of elastic contact pressure. Upon reaching the perimeter of the contact spot{,} the droplets coalesce with the surrounding bulk liquid either in a continuous or discontinuous fashion. Droplets that exhibit complete coalescence move with a speed proportional to the pressure gradient along their trajectory. However{,} droplets that undergo partial coalescence cascades (up to 9 were observed) do not. The latter also move significantly slower. We have identified surface roughness as a potential mechanism causing the contrasting behavior."}