Volume 111, Number 5, September 2015
|Number of page(s)||5|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||21 September 2015|
Capillary stretching of fibers
1 Laboratoire d'Hydrodynamique (LadHyX), Ecole Polytechnique - F-91128 Palaiseau Cedex, France
2 CNRS, UMR 7190, Institut Jean Le Rond d'Alembert - F-75005, Paris, France
3 Sorbonne Universites, UPMC Univ Paris 06, UMR 7190, Institut Jean Le Rond d'Alembert F-75005, Paris, France
Received: 27 March 2015
Accepted: 2 September 2015
We study the interaction of a finite volume of liquid with two parallel thin flexible fibers. A tension along the fibers is imposed and may be varied. We report two morphologies, i.e. two types of wet adhesion: a weak capillary adhesion, where a liquid drop bridges the fibers, and a strong elastocapillary adhesion where the liquid is spread between two collapsed fibers. We show that geometry, capillarity and stretching are the key parameters at play. We describe the collapse and detachment of the fibers as a function of two nondimensional parameters, arising from the geometry of the system and a balance between capillary and stretching energies. In addition, we show that the morphology, thus the capillary adhesion, can be controlled by changing the tension within the fibers.
PACS: 68.03.Cd – Surface tension and related phenomena / 46.25.-y – Static elasticity / 68.35.Np – Adhesion
© EPLA, 2015
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