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Article Dans Une Revue Measurement Science and Technology Année : 2012

On‐chip characterization of the viscoelasticity of complex fluids using microcantilevers

Résumé

Due to the need for a microrheometer monitoring the high‐frequency viscoelasticity of soft matter in situ, we describe a cantilever‐based microrheometer to achieve this purpose. The elastic and viscous moduli of complex fluids can be measured with an acceptable accuracy over a high frequency bandwidth of 1‐100 kHz. Some preliminary data on small samples (~10‐100 μL) of simple Newtonian and viscoelastic polymer and surfactant solutions showed the ability to measure the dynamic moduli in the range of 0.01‐ 10 kPa. This approach will provide a new way to characterize in situ, dynamic microrheology of minute and trace materials and will advance the field of biorheology, microfluidics, and polymer processing.
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Dates et versions

hal-00745004 , version 1 (13-11-2014)

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Mohamed Youssry, Etienne Lemaire, Benjamin Caillard, Annie Colin, Isabelle Dufour. On‐chip characterization of the viscoelasticity of complex fluids using microcantilevers. Measurement Science and Technology, 2012, 23, 125306 (10 p.). ⟨10.1088/0957-0233/23/12/125306⟩. ⟨hal-00745004⟩
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