Department of Physics Papers
Title
Document Type
Journal Article
Date of this Version
10-31-2003
Publication Source
Physical Review Letters
Volume
91
Issue
18
Start Page
188303-1
Last Page
188303-4
DOI
10.1103/PhysRevLett.91.188303
Abstract
We report how aqueous foams lose their elasticity along two trajectories in the jamming phase diagram. With time, bubbles unjam due to coarsening. Rheology is measured over nearly six (five) decades in frequency (time); surprisingly, it is linear and well behaved at low frequencies. With shear, bubbles also unjam. Rheology is measured by a novel method in which a step strain is superposed on an otherwise steady flow; transient elasticity vanishes at the same strain rate at which successive bubble rearrangements merge together. Thus we connect the macroscopic rheology with the underlying microscopic bubble dynamics.
Copyright/Permission Statement
© 2003 American Physical Society. You can view the original article at: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.91.188303
Recommended Citation
Gopal, A. D., & Durian, D. J. (2003). Relaxing in Foam. Physical Review Letters, 91 (18), 188303-1-188303-4. http://dx.doi.org/10.1103/PhysRevLett.91.188303
Date Posted: 13 October 2017
This document has been peer reviewed.
Comments
At the time of publication, author Douglas J. Durian was affiliated with University of California, Los Angeles. Currently, he is a faculty member at the Physics Department at the University of Pennsylvania.