Doubly rotated resonators for sensing the properties of liquids

Doubly rotated resonators for sensing the properties of liquids

When a doubly rotated resonator is operated in a liquid, the displacement of the surface is partly out of the plane of the plate of the resonator. The out-of-plane component of the displacement propagates a damped compressional wave into the liquid, and the in-plane component propagates a damped she...

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Veröffentlicht in:IEEE transactions on ultrasonics, ferroelectrics, and frequency control ferroelectrics, and frequency control, 2004-11, Vol.51 (11), p.1388-1393
Hauptverfasser: Yoonkee Kim, Vig, J.R., Ballato, A.
Format: Artikel
Sprache:eng
Schlagworte:
Coupling circuits
Displacement
Equivalent circuits
Ferroelectric materials
Frequency measurement
Liquids
Motional
Resonant frequencies
Resonant frequency
Resonators
Rotation measurement
Rough surfaces
Sound waves
Surface acoustic waves
Surface roughness
Surface treatment
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Zusammenfassung:When a doubly rotated resonator is operated in a liquid, the displacement of the surface is partly out of the plane of the plate of the resonator. The out-of-plane component of the displacement propagates a damped compressional wave into the liquid, and the in-plane component propagates a damped shear wave. In this paper, we report the measurements of the series resonant frequency and the motional arm resistance of doubly rotated quartz resonators (/spl theta//spl ap/35/spl deg/ and /spl phi/=7/spl deg/) in liquids to compare with singly rotated AT-cut resonators (/spl theta//spl ap/35/spl deg/ and /spl phi/=0/spl deg/). A modified Butterworth-Van Dyke (BVD) equivalent circuit model is suggested to analyze doubly rotated cut resonators under liquid loading.
ISSN:0885-3010
1525-8955
DOI:10.1109/TUFFC.2004.1367477