Rigidity percolation in particle-laden foams

被引：28

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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