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Wetting morphologies on randomly oriented fibers

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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.

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Authors and Affiliations

  1. Surface du Verre et Interfaces, UMR 125, 93303, Aubervilliers, France

    Alban Sauret

  2. Department of Mechanical and Aerospace Engineering, Princeton University, 08544, Princeton, NJ, USA

    François Boulogne, Beatrice Soh & Howard A. Stone

  3. Department of Mechanical and Aerospace Engineering, New York University Polytechnic School of Engineering, 11201, Brooklyn, NY, USA

    Emilie Dressaire

Authors
  1. Alban Sauret
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  2. François Boulogne
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  3. Beatrice Soh
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  4. Emilie Dressaire
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  5. Howard A. Stone
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Correspondence to Alban Sauret.

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Sauret, A., Boulogne, F., Soh, B. et al. Wetting morphologies on randomly oriented fibers. Eur. Phys. J. E 38, 62 (2015). https://doi.org/10.1140/epje/i2015-15062-y

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  • DOI: https://doi.org/10.1140/epje/i2015-15062-y

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