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  Applications of Lithium Niobate acoustic plate mode as sensor for conductive liquids

Liew, S., Kelkar, U., Shana, Z., Haworth, D., Grunze, M., & Josse, F. (1990). Applications of Lithium Niobate acoustic plate mode as sensor for conductive liquids. In B. R. McAvoy (Ed.), Proceedings / IEEE 1990 Ultrasonics Symposium: December 4 - 7, 1990; Vol. 1 (pp. 285-290). New York, NY: IEEE. doi:10.1109/ULTSYM.1990.171369.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-95CB-2 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-95CC-1
Genre: Conference Paper

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IEEESympUltrasonics_1990_285.pdf (Any fulltext), 482KB
 
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 Creators:
Liew, S., Author
Kelkar, U.R., Author
Shana, Z.A., Author
Haworth, D.T., Author
Grunze, M.1, Author              
Josse, F., Author
Affiliations:
1Cellular Biophysics, Max Planck Institute for Medical Research, Max Planck Society, ou_2364731              

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Free keywords: Lithium niobate, Acoustic applications, Acoustic sensors, Acoustic devices, Acoustic signal detection, Detectors, Acoustic measurements, Electric variables measurement, Acoustic propagation, Frequency, acoustoelectric devices, chemical analysis, electric sensing devices, lithium compounds, piezoelectric devices, ultrasonic delay lines, dilute electrolyte solutions, aqueous solutions, conducting liquid sensor, Z-cut, X-propagating, plate mode devices, metal ion solutions, electrical loading, nonaqueous solutions, sensitivity, resolution, solution conductivity changes, LiNbO/sub 3/
 Abstract: Results on the use of Z-cut, X-propagating LiNbO/sub 3/ plate mode devices as detectors for dilute electrolyte or metal ion solutions are reported. It is shown that a relatively strong external electric field associated with the selected SH plate wave penetrates into an adjacent liquid and interacts with ions and dipoles. The resulting electrical loading leads to a measurable perturbation in the wave propagation characteristics, which can then be related to the liquid properties. Experiments were conducted with various aqueous and nonaqueous solutions, at various device frequencies. An increase in sensitivity and resolution of at least two orders of magnitude greater than that of previously reported acoustic plate mode sensors is observed. These promising results have also led to the investigation of the detection of aqueous metal ions (Fe/sup 3+/, Mg/sup 2+/, Cu/sup 2+/, etc.) using solution conductivity changes rather than the commonly used mass sensitivity.

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Language(s): eng - English
 Dates: 2002-08-061990
 Publication Status: Published in print
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1109/ULTSYM.1990.171369
 Degree: -

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Title: IEEE Symposium on Ultrasonics 1990
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Start-/End Date: 1990-12-04 - 1990-12-07

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Title: Proceedings / IEEE 1990 Ultrasonics Symposium : December 4 - 7, 1990 ; Vol. 1
Source Genre: Proceedings
 Creator(s):
McAvoy, Bruce R., Editor
Affiliations:
-
Publ. Info: New York, NY : IEEE
Pages: 598 Volume / Issue: 1 Sequence Number: - Start / End Page: 285 - 290 Identifier: ISBN: 0-87942-562-8
ISBN: 0-87942-563-6
ISBN: 0-87942-564-4