Shear viscosity and structural scalings in model adhesive hard-sphere gels.
Shear viscosity and structural scalings in model adhesive hard-sphere gels.
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模型粘合剂硬球凝胶中的剪切粘度和结构缩放。
DOI：
10.1103/physreve.89.050302
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
N. Wagner
中科院分区：
文献类型：
--
作者：
A. Eberle;N. Martys;L. Porcar;S. Kline;W. George;J. M. Kim;P. Butler;N. Wagner
我们提出的实验和模拟显示了流动凝胶的流变学和微观结构的基本尺度。独特的 flow-SANS 测量表明该结构沿中性轴和压缩轴定向。我们使用单个参数 α 来量化各向异性，该参数按无量纲数 M^{'} 进行缩放，而无量纲数 M^{'} 是由粒子上的力平衡产生的。模拟支持了缩放比例，并确认结果与势的形状和范围无关，这表明具有短程吸引力的胶体凝胶具有普遍性。
We present experiments and simulations that show a fundamental scaling for both the rheology and microstructure of flowing gels. Unique flow-SANS measurements demonstrate that the structure orients along both the neutral and compression axis. We quantify the anisotropy using a single parameter, α, that scales by a dimensionless number, M^{'}, that arises from a force balance on a particle. Simulations support the scalings and confirm the results are independent of the shape and range of the potential suggesting a universal for colloidal gels with short-ranged attractions.