Issue |
Europhys. Lett.
Volume 49, Number 1, January I 2000
|
|
---|---|---|
Page(s) | 68 - 74 | |
Section | Condensed matter: structure, mechanical and thermal properties | |
DOI | https://doi.org/10.1209/epl/i2000-00121-4 | |
Published online | 01 September 2002 |
Sheared foam as a supercooled liquid?
1
Information Technology Laboratory, NIST - Gaithersburg, MD 20899, USA
2
Department of Chemistry and Biochemistry, University of California Los Angeles, CA
90095, USA
Received:
5
May
1999
Accepted:
1
November
1999
We conduct numerical simulations on a simple model of a two-dimensional steady-state sheared foam, and define a quantity Γ that measures stress fluctuations in the constant-area system. This quantity reduces to the temperature in an equilibrium system. We find that the relation between the viscosity and Γ is the same as that between viscosity and temperature in a very different system, namely a supercooled liquid. This is the first evidence of a common phenomenon linking these two systems.
PACS: 64.70.Pf – Glass transitions / 83.50.Ax – Steady shear flows / 83.70.Hq – Heterogeneous liquids: suspensions, dispersions, emulsions, pastes, slurries, foams, block copolymers, etc
© EDP Sciences, 2000
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