Controlling anomalous stresses in soft field-responsive systems

Details Controlling anomalous stresses in soft field-responsive systems Controlling anomalous stresses in soft field-responsive systems

2000-03-02

arxiv.org/abs/cond-mat/0003023v1

Physics

Condensed Matter

Soft Condensed Matter

5 pages, 6 figures, submitted to PRE

Scientific paper

10.1103/PhysRevE.62.5313

We report a new 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 bounded dimers constituted by induced dipoles. The great variety of stress regimes includes non-monotonous behaviors, multi-resonances, 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

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