Wetting morphologies on an array of fibers of different radii

Alban Sauret, François Boulogne, David Cébron, Emilie Dressaire, Howard A. Stone

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

We investigate the equilibrium morphology of a finite volume of liquid placed on two parallel rigid fibers of different radii. As observed for identical radii fibers, the liquid is either in a column morphology or adopts a drop shape depending on the inter-fiber distance. However the cross-sectional area and the critical inter-fiber distance at which the transition occurs are both modified by the polydispersity of the fibers. Using energy considerations, we analytically predict the critical inter-fiber distance corresponding to the transition between the column and the drop morphologies. This distance depends both on the radii of the fibers and on the contact angle of the liquid. We perform experiments using a perfectly wetting liquid on two parallel nylon fibers: the results are in good agreement with our analytical model. The morphology of the capillary bridges between fibers of different radii is relevant to the modeling of large arrays of polydisperse fibers. This journal is

Original languageEnglish (US)
Pages (from-to)4034-4040
Number of pages7
JournalSoft matter
Volume11
Issue number20
DOIs
StatePublished - May 28 2015

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics

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    Sauret, A., Boulogne, F., Cébron, D., Dressaire, E., & Stone, H. A. (2015). Wetting morphologies on an array of fibers of different radii. Soft matter, 11(20), 4034-4040. https://doi.org/10.1039/c5sm00401b