Elasticity of arrested short-ranged attractive colloids: homogeneous and heterogeneous glasses.
Elasticity of arrested short-ranged attractive colloids: homogeneous and heterogeneous glasses.
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捕获的短程吸引胶体的弹性：均质和异质玻璃。
DOI：
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发表时间：
2009
影响因子：
8.6
通讯作者：
E. Del Gado
中科院分区：
文献类型：
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作者：
A. Zaccone;Hua Wu;E. Del Gado
我们评估逮捕短程有吸引力的胶体的弹性相结合的分析可解的弹性模型与分层逮捕计划。这种新的方法使我们能够区分微观（初级粒子水平）从介观（集群水平）的宏观剪切模量的贡献。结果定量预测实验数据在很宽的体积分数范围内，并表明在这种情况下，相关的贡献是由于介观结构。在此基础上，我们提出，不同的短程吸引胶体的逮捕状态可以有意义地区分为均匀或非均匀的胶体玻璃的长度尺度，控制其弹性行为。
We evaluate the elasticity of arrested short-ranged attractive colloids by combining an analytically solvable elastic model with a hierarchical arrest scheme. This new approach allows us to discriminate the microscopic (primary particle-level) from the mesoscopic (cluster-level) contribution to the macroscopic shear modulus. The results quantitatively predict experimental data in a wide range of volume fractions and indicate in which cases the relevant contribution is due to mesoscopic structures. On this basis we propose that different arrested states of short-ranged attractive colloids can be meaningfully distinguished as homogeneous or heterogeneous colloidal glasses in terms of the length scale which controls their elastic behavior.