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Title: Multiple-frequency acoustic wave devices for chemical sensing and materials characterization in both gas and liquid phase

Abstract

This invention consists of a chemical sensor that includes two or more pairs of interdigital electrodes having different periodicities. Each pair is comprised of a first electrode and a second electrode. The electrodes are patterned on a surface of a piezoelectric substrate. Each pair of electrodes may launch and receive various acoustic waves (AW), including a surface acoustic wave (SAW), and may also launch and receive several acoustic plate modes (APMs). The frequencies associated with each are functions of the transducer periodicity as well as the velocity of the particular AW in the chosen substrate material. An AW interaction region exists between each pair of electrodes. Circuitry is used to launch, receive, and monitor the propagation characteristics of the AWs and may be configured in an intermittent measurement fashion or in a continuous measurement fashion. Perturbations to the AW velocity and attenuation are recorded at several frequencies and provide the sensor response.

Inventors:
;
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10147339
Patent Number(s):
PATENTS-US-A7705408
Application Number:
ON: DE93011996; PAN: 7-705,408
Assignee:
Dept. of Energy
DOE Contract Number:  
AC04-76DP00789
Resource Type:
Patent Application
Resource Relation:
Other Information: PBD: 1991
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 47 OTHER INSTRUMENTATION; SONIC PROBES; DESIGN; CHEMICAL ANALYSIS; INVENTIONS; GASES; LIQUIDS; ACOUSTICS; ELECTRODES; SURFACE PROPERTIES; ACOUSTIC DETECTION; ACOUSTIC MEASUREMENTS; 400102; 440800; CHEMICAL AND SPECTRAL PROCEDURES; MISCELLANEOUS INSTRUMENTATION

Citation Formats

Martin, S J, and Ricco, A J. Multiple-frequency acoustic wave devices for chemical sensing and materials characterization in both gas and liquid phase. United States: N. p., 1991. Web.
Martin, S J, & Ricco, A J. Multiple-frequency acoustic wave devices for chemical sensing and materials characterization in both gas and liquid phase. United States.
Martin, S J, and Ricco, A J. Tue . "Multiple-frequency acoustic wave devices for chemical sensing and materials characterization in both gas and liquid phase". United States. https://www.osti.gov/servlets/purl/10147339.
@article{osti_10147339,
title = {Multiple-frequency acoustic wave devices for chemical sensing and materials characterization in both gas and liquid phase},
author = {Martin, S J and Ricco, A J},
abstractNote = {This invention consists of a chemical sensor that includes two or more pairs of interdigital electrodes having different periodicities. Each pair is comprised of a first electrode and a second electrode. The electrodes are patterned on a surface of a piezoelectric substrate. Each pair of electrodes may launch and receive various acoustic waves (AW), including a surface acoustic wave (SAW), and may also launch and receive several acoustic plate modes (APMs). The frequencies associated with each are functions of the transducer periodicity as well as the velocity of the particular AW in the chosen substrate material. An AW interaction region exists between each pair of electrodes. Circuitry is used to launch, receive, and monitor the propagation characteristics of the AWs and may be configured in an intermittent measurement fashion or in a continuous measurement fashion. Perturbations to the AW velocity and attenuation are recorded at several frequencies and provide the sensor response.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {12}
}

Patent Application:

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