Controlling anomalous stresses in soft field-responsive systems
Controlling anomalous stresses in soft field-responsive systems
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DOI：
10.1103/physreve.62.5313
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发表时间：
2000-03
期刊：
影响因子：
--
通讯作者：
Reguera;Rubí;Pérez-Madrid
中科院分区：
文献类型：
--
作者：
Reguera;Rubí;Pérez-Madrid
我们报告了一种在现场响应悬液中发生的现象：剪切引起的异常应力。在由诱导偶极子构成的结合二聚体悬浮液中，旋转场和剪切流之间的竞争产生了多种异常应力行为。应力状态的多样性包括非单调行为、多共振、负粘滞效应和阻塞。不同状态之间转变的可逆性和应力的自相似性使得这种现象是可控的，因此适用于改变软凝聚态相的宏观性质。
We report a phenomenon occurring in field-responsive suspensions: shear-induced anomalous stresses. Competition between a rotating field and a shear flow originates a multiplicity of anomalous stress behaviors in suspensions of bound dimers constituted by induced dipoles. The great variety of stress regimes includes nonmonotonic behaviors, multiresonances, negative viscosity effect, and blockades. The reversibility of the transitions between the different regimes and the self-similarity of the stresses make this phenomenon controllable and therefore applicable to modify macroscopic properties of soft condensed matter phases.