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Effective utilization of acoustic wave sensor responses: simultaneous measurement of velocity and attenuation

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2 Author(s)
Martin, S.J. ; Sandia Nat. Lab., Albuquerque, NM, USA ; Ricco, A.J.

When using acoustic wave devices as sensors, responses arise from perturbations in wave-propagation characteristics (velocity and attenuation) caused by wave interactions with a surface layer. Simultaneous measurement of both velocity and attenuation changes helps elucidate the wave-perturbation mechanisms. A number of wave-surface-layer interactions have been investigated involving surface acoustic waves (SAWs) in the gas phase and acoustic plate modes (APMs) in liquids. These include mass loading of a SAW, acoustoelectric interactions between SAWs and a conductive film overlay, mass loading of an APM, and viscous coupling of an APM to an adjacent liquid medium

Published in:

Ultrasonics Symposium, 1989. Proceedings., IEEE 1989

Date of Conference:

3-6 Oct 1989