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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Liew, S. Josse, F. Haworth, D.T. Shana, Z.A. Kelkar, U.R. Grunze, M. |
| Copyright Year | 1990 |
| Description | Author affiliation: Marquette Univ., Milwaukee, WI, USA (Liew, S.; Josse, F.; Haworth, D.T.; Shana, Z.A.; Kelkar, U.R.) |
| 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. |
| Starting Page | 285 |
| Ending Page | 290 |
| File Size | 496243 |
| Page Count | 6 |
| File Format | |
| DOI | 10.1109/ULTSYM.1990.171369 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1990-12-04 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Lithium niobate Acoustic applications Acoustic sensors Acoustic devices Acoustic signal detection Detectors Acoustic measurements Electric variables measurement Acoustic propagation Frequency |
| Content Type | Text |
| Resource Type | Article |
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