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Article Dans Une Revue Physical Review E : Statistical, Nonlinear, and Soft Matter Physics Année : 2013

Magnetic wire-based sensors for the micro-rheology of complex fluids

N. K. Sampathkumar
  • Fonction : Auteur
A. Cebers
  • Fonction : Auteur

Résumé

We propose a simple micro-rheology technique to evaluate the viscoelastic properties of complex fluids. The method is based on the use of magnetic wires of a few microns in length submitted to a rotational magnetic field. In this work, the method is implemented on a surfactant wormlike micellar solution that behaves as an ideal Maxwell fluid. With increasing frequency, the wires undergo a transition between a steady and a hindered rotation regime. The study shows that the average rotational velocity and the amplitudes of the oscillations obey scaling laws with well-defined exponents. From a comparison between model predictions and experiments, the rheological parameters of the fluid are determined.

Dates et versions

hal-00913575 , version 1 (04-12-2013)

Identifiants

Citer

L. Chevry, N. K. Sampathkumar, A. Cebers, Jean-François Berret. Magnetic wire-based sensors for the micro-rheology of complex fluids. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2013, ⟨10.1103/PhysRevE.88.062306⟩. ⟨hal-00913575⟩
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