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Viscosimeter on a microfluidic chip.

Pierre Guillot1, Pascal Panizza, Jean-Baptiste Salmon

  • 1Rhodia Laboratoire du Futur, Unité Mixte Rhodia-CNRS, Université Bordeaux I, 178 Avenue du Docteur Schweitzer, 33608 Pessac, France. pierre.guillot-exterieur@eu.rhodia.com

Langmuir : the ACS Journal of Surfaces and Colloids
|June 28, 2006
PubMed
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This study introduces a microfluidic chip viscosimeter for precise fluid viscosity measurements. The device analyzes fluid interface shapes in laminar flow, requiring minimal sample volumes.

Area of Science:

  • Fluid mechanics
  • Microfluidics
  • Rheology

Background:

  • Traditional viscometry can be sample-intensive and complex.
  • Microfluidic devices offer miniaturized and efficient fluid handling.
  • Precise characterization of complex fluid rheology is crucial in various scientific and industrial fields.

Purpose of the Study:

  • To develop and validate a microfluidic chip-based viscosimeter.
  • To enable accurate viscosity measurements of complex fluids using minimal sample volumes.
  • To demonstrate the system's capability across a wide range of viscosities.

Main Methods:

  • Implementation of a microfluidic chip utilizing laminar parallel flows.
  • Employing optical microscopy to determine the interface shape between the test fluid and a reference fluid.

Related Experiment Videos

  • Calculating shear rate and viscosity based on flow rates and channel geometry.
  • Main Results:

    • The microfluidic viscosimeter accurately measures viscosity as a function of shear rate.
    • The system requires less than 300 microL of fluid for analysis.
    • Successful testing of complex fluids with viscosities spanning 10^-3 to 70 Pa.s.

    Conclusions:

    • The developed microfluidic viscosimeter provides an accurate and efficient method for rheological characterization.
    • This technology significantly reduces sample consumption for viscosity measurements.
    • The device is suitable for analyzing a broad spectrum of complex fluids.