Towards local rheology of emulsions under Couette flow using Dynamic Light Scattering.

@article{Salmon2003TowardsLR,
  title={Towards local rheology of emulsions under Couette flow using Dynamic Light Scattering.},
  author={J. B. Salmon and Lydiane B{\'e}cu and S{\'e}bastien Manneville and A Colin},
  journal={The European physical journal. E, Soft matter},
  year={2003},
  volume={10 3},
  pages={209-21}
}
We present local velocity measurements in emulsions under shear using heterodyne Dynamic Light Scattering. Two emulsions are studied: a dilute system of volume fraction phi = 20% and a concentrated system with phi = 75%. Velocity profiles in both systems clearly show the presence of wall slip. We investigate the evolution of slip velocities as a function of shear stress and discuss the validity of the corrections for wall slip classically used in rheology. Focussing on the bulk flow, we show… CONTINUE READING

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