BHARTI, Bharti; CARLSON, Andreas; CHAN, Tak Shing; SALEZ, Thomas

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EPL - Europhysics Letters. 2024, vol. 145, p. 67001

European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing

Resumen en inglés

We theoretically study the Plateau-Rayleigh instability of a thin viscous film covering a fiber consisting of a rigid cylindrical core coated with a thin compressible elastic layer. We develop a soft-lubrication model, combining the capillary-driven flow in the viscous film to the elastic deformation of the soft coating, within the Winkler-foundation framework. We perform a linear-stability analysis and derive the dispersion relation. We find that the growth rate is larger when the soft coating is more compliant. As such, softness acts as a destabilising factor. In contrast, increasing the thickness of the soft coating reduces the growth rate, due to the dominating geometrical effect.< Leer menos

Proyecto europeo

Brownian Motion near Soft Interfaces

Proyecto ANR

Capteur Interférométrique de Contraintes de Surface - ANR-21-CE06-0029
Frottements dans les systèmes complexes - ANR-21-CE06-0039

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Centros de investigación

Laboratoire Ondes et Matière d'Aquitaine (LOMA) - UMR 5798