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Accueil > Publications > Archives 2004-2010 > 2006

Viscosimeter on a microfluidic chip

P. Guillot, P. Panizza, J.-B. Salmon, M. Joanicot, A. Colin, C.-H. Bruneau, T. Colin — Langmuir 22 (2006) 6438

publié le , mis à jour le

In this work, a rheometer implemented on a chip is presented. The physical principle of this system is to use laminar Parallel Flows in a microfluidic channel. The
fluid to study flows side
by side with a reference
fluid of known viscosity. By using optical microscopy, the shape of the
interface between both
fluids can be determined. Knowing the
flow rates of the two liquids and
the geometrical features of the channel, the mean shear rate sustained by the
fluid and its viscosity
can thus be computed. Accurate and precise rheological measurements of the entire rheological
curve can be made using less than 300 microliters of
fluid. Several complex fluids are tested with
viscosities ranging from 10-3 to 70 Pa.s.

- Publié dans Langmuir