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Controlling anomalous stresses in soft field-responsive systems
Reguera, D. (David); Rubí Capaceti, José Miguel; Pérez Madrid, Agustín
Universitat de Barcelona
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.
2011-07-26
Dinàmica de fluids
Reologia
Propietats magnètiques
Fluid dynamics
Rheology
Magnetic properties
(c) American Physical Society, 2000
Article
The American Physical Society
         

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