Universality in dynamic wetting dominated by contact-line friction
2012 (English)In: Physical Review E. Statistical, Nonlinear, and Soft Matter Physics, ISSN 1539-3755, E-ISSN 1550-2376, Vol. 85, no 4, 045302Article in journal (Refereed) PublishedText
We report experiments on the rapid contact-line motion present in the early stages of capillary-driven spreading of drops on dry solid substrates. The spreading data fail to follow a conventional viscous or inertial scaling. By integrating experiments and simulations, we quantify a contact-line friction mu(f) which is seen to limit the speed of the rapid dynamic wetting. A scaling based on this contact-line friction is shown to yield a universal curve for the evolution of the contact-line radius as a function of time, for a range of fluid viscosities, drop sizes, and surface wettabilities.
Place, publisher, year, edition, pages
2012. Vol. 85, no 4, 045302
IdentifiersURN: urn:nbn:se:sh:diva-30107DOI: 10.1103/PhysRevE.85.045302ISI: 000302856300001ScopusID: 2-s2.0-84860528166OAI: oai:DiVA.org:sh-30107DiVA: diva2:932500
FunderSwedish Research CouncilSwedish e‐Science Research Center