High Viscosity Sensing Using a Love Wave Acoustic Platform Combined with a PDMS Microfludic Chip

This paper exhibits a microsensor solution to allow Love wave acoustic oscillators working under highly viscous liquid environments. Microfluidic techniques are employed to limit attenuation caused by viscous coupling using a poly(dimethylsiloxane) (PDMS) chip bonded on the Love wave device. Fabrica...

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Bibliographic Details
Published in:ECS transactions 2007-11, Vol.4 (1), p.73-81
Main Authors: Raimbault, V., Rebière, D., Dejous, C., Guirardel, M., Conedera, V., Pistré, J.
Format: Article
Language:English
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Summary:This paper exhibits a microsensor solution to allow Love wave acoustic oscillators working under highly viscous liquid environments. Microfluidic techniques are employed to limit attenuation caused by viscous coupling using a poly(dimethylsiloxane) (PDMS) chip bonded on the Love wave device. Fabrication of PDMS chips is detailed. Several microfluidic chip geometries have been realized. Liquid flows of aqueous glycerol solutions up to 0.939 Pa.s (939cP, 98% glycerol) have been tested. Thanks to insertion losses diminution, we were able to observe the Newtonian to Maxwellian behaviour transition in an oscillator mode. Modelisation using the classical perturbation theory is discussed.
ISSN:1938-5862
1938-6737
DOI:10.1149/1.2813478