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Wetting morphologies on randomly oriented fibers

  • Alban Sauret
  • François Boulogne
  • Beatrice Soh
  • Emilie Dressaire
  • Howard A. Stone
Regular Article

Abstract

We characterize the different morphologies adopted by a drop of liquid placed on two randomly oriented fibers, which is a first step toward understanding the wetting of fibrous networks. The present work reviews previous modeling for parallel and touching crossed fibers and extends it to an arbitrary orientation of the fibers characterized by the tilting angle and the minimum spacing distance. Depending on the volume of liquid, the spacing distance between fibers and the angle between the fibers, we highlight that the liquid can adopt three different equilibrium morphologies: 1) a column morphology in which the liquid spreads between the fibers, 2) a mixed morphology where a drop grows at one end of the column or 3) a single drop located at the node. We capture the different morphologies observed using an analytical model that predicts the equilibrium configuration of the liquid based on the geometry of the fibers and the volume of liquid.

Graphical abstract

Keywords

Soft Matter: Interfacial Phenomena and Nanostructured Surfaces 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Alban Sauret
    • 1
  • François Boulogne
    • 2
  • Beatrice Soh
    • 2
  • Emilie Dressaire
    • 3
  • Howard A. Stone
    • 2
  1. 1.Surface du Verre et Interfaces, UMR 125AubervilliersFrance
  2. 2.Department of Mechanical and Aerospace EngineeringPrinceton UniversityPrincetonUSA
  3. 3.Department of Mechanical and Aerospace EngineeringNew York University Polytechnic School of EngineeringBrooklynUSA

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