Periodic Nonlinear Bubble Motion in Aqueous Foam under Oscillating Shear Strain
- 11 August 1997
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 79 (6) , 1154-1157
- https://doi.org/10.1103/physrevlett.79.1154
Abstract
The elastic response of aqueous foam to oscillating shear strain is probed by diffusing-wave spectroscopy. At low strains, the local bubble displacements are shown to be compatible with linear elastic behavior. At higher strains, a crossover to nonlinear but still fully periodic displacements is observed. To explain these results, we present a phenomenological model based on unstable bubble configurations.Keywords
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