Wrinkling of microcapsules in shear flow

Abstract

Elastic capsules can exhibit short wavelength wrinkling in external shear flow. We analyse this instability of the capsule shape and use the length scale separation between the capsule radius and the wrinkling wavelength to derive analytical results both for the threshold value of the shear rate and for the critical wave-length of the wrinkling. These results can be used to deduce elastic parameters from experiments.

4 pages, 2 figures, submitted to PRL

References in corpus (5)

• Fluid Vesicles in Shear Flow
• Fluid Vesicles with Viscous Membranes in Shear Flow
• Influence of shear flow on vesicles near a wall: a numerical study
• Hydrodynamic lift on bound vesicles
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• Wrinkling instability of vesicles in steady linear flow