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Published on: November 10, 2014

Non-axisymmetric elastohydrodynamic solid-liquid-solid dewetting: Experiments and numerical modelling.

Maciej Chudak¹, Jesse S Kwaks¹, Jacco H Snoeijer^1,2

¹Department of Applied Physics, Eindhoven University of Technology, Eindhoven, The Netherlands.

The European Physical Journal. E, Soft Matter

|January 19, 2020

Summary

This summary is machine-generated.

We studied liquid film dewetting between a soft hemisphere and an elastomer. The contact line moves faster along the perimeter than inwards, a finding reproduced by our numerical model.

Keywords:

Flowing Matter: Interfacial phenomena

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Area of Science:

Soft Matter Physics
Fluid Dynamics
Materials Science

Background:

Understanding liquid film behavior is crucial in soft matter and materials science.
Dewetting phenomena are complex, especially in confined geometries with soft interfaces.

Purpose of the Study:

To investigate the dewetting dynamics of partially wetting liquid films.
To analyze non-axisymmetric dewetting between a soft elastic hemisphere and an elastomer layer.
To compare experimental observations with numerical simulations.

Main Methods:

Systematic experimental studies of liquid film dewetting.
Focus on non-axisymmetric dewetting initiated at minimum film thickness locations.
Development of a three-dimensional, fully coupled numerical model.

Main Results:

Observed highly anisotropic contact line speed during dewetting.
Contact line speed is significantly faster in the azimuthal direction compared to the radial direction.
The numerical model successfully reproduced key experimental observations.

Conclusions:

The study elucidates the anisotropic nature of dewetting in soft confined systems.
The developed numerical model provides a valuable tool for simulating such complex phenomena.
Findings contribute to the understanding of liquid film behavior at soft interfaces.