Rigidity percolation in particle-laden foams

被引：27
|
作者：
Cohen-Addad, Sylvie
Krzan, Marcel
Hoehler, Reinhard
Herzhaft, Benjamin
机构：
[1] Univ Paris, Lab Phys Mat, Div Interfaces, UMR,CNRS 8108, F-77454 Marne La Vallee, France
[2] IFP, F-92852 Rueil Malmaison, France
来源：
PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 16期
关键词：
D O I：
10.1103/PhysRevLett.99.168001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the viscoelastic behavior of aqueous foam mixed with solid noncolloidal particles. We show that adding a tiny amount of grains can enhance the elastic and loss shear moduli by more than 1 order of magnitude. The scaling of these moduli with solid volume fraction is in qualitative agreement with that predicted by an effective-medium rigidity percolation model. We present a simple model, based on capillary attraction, to explain the particle-size dependence of the threshold.
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页数：4
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