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首页> 外文期刊>The European physical journal, E. Soft matter >Shear-induced slab-like domains in a directed percolated colloidal gel
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Shear-induced slab-like domains in a directed percolated colloidal gel

机译：剪切诱导的渗透胶体凝胶中的板状结构域

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摘要

We explore the structural changes of a gel-forming colloid polymer mixture under shear by employing Brownian dynamics simulations of a colloidal system with short-ranged attractive depletion interaction in a linear flow profile. While the structure of unpercolated systems changes only slightly under shearing, we discover the formation of slab-like clusters in sheared directed percolated gel networks that are confined between two walls. These gel-slabs are stable over a long time and seem to be related to the syneresis phenomena that can be observed in directed percolated colloidal gels. Only at large shear strength the slabs are destroyed and a homogeneous state with many unbounded particles can be observed. We also quantitatively analyze our results by determining void volumes.
机译：通过在线性流动轮廓中采用短传出的有吸引力的耗尽相互作用，探讨剪切下凝胶形成胶体聚合物混合物的结构变化。 虽然未经渗透系统的结构仅在剪切下略微发生变化，但是在剪切的导向的渗透凝胶网络中发现了板状簇的形成，这些凝胶网络被限制在两个壁之间。 这些凝胶板在很长一段时间内稳定，似乎与可透过渗透胶体凝胶中可以观察到的替代成因现象有关。 只有在大剪切强度下，板坯被破坏，并且可以观察到许多无界颗粒的均匀状态。 我们还通过确定空隙量来定量分析我们的结果。

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