Comparison and experimental validation of two potential resonant viscosity sensors in the kilohertz rangeReportar como inadecuado




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1 IMS - Laboratoire de l-intégration, du matériau au système 2 Institute for Microelectronics and Microsensors

Abstract : Oscillating microstructures are well-established and find application in many fields.These include, force sensors, e.g.
AFM micro-cantilevers or accelerometers based on resonantsuspended plates.
This contribution presents two vibrating mechanical structures acting asforce sensors in liquid media in order to measure hydrodynamic interactions.
Rectangular crosssection microcantilevers as well as circular cross section wires are investigated.
Each structurefeatures specific benefits, which are discussed in detail.
Furthermore, their mechanicalparameters and their deflection in liquids are characterized.
Finally, an inverse analyticalmodel is applied to calculate the complex viscosity near the resonant frequency for both typesof structures.
With this approach it is possible to determine rheological parameters in the kiloHertz range in situ within a few seconds.
The monitoring of the complex viscosity of yogurtduring the fermentation process is used as a proof of concept to qualify at least one of the twosensors into opaque mixtures.






Autor: Etienne Lemaire - Martin Heinisch - Benjamin Caillard - Bernhard Jakoby - Isabelle Dufour -

Fuente: https://hal.archives-ouvertes.fr/



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