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Title: High-frequency shear-horizontal surface acoustic wave sensor

Abstract

A Love wave sensor uses a single-phase unidirectional interdigital transducer (IDT) on a piezoelectric substrate for leaky surface acoustic wave generation. The IDT design minimizes propagation losses, bulk wave interferences, provides a highly linear phase response, and eliminates the need for impedance matching. As an example, a high frequency (.about.300-400 MHz) surface acoustic wave (SAW) transducer enables efficient excitation of shear-horizontal waves on 36.degree. Y-cut lithium tantalate (LTO) giving a highly linear phase response (2.8.degree. P-P). The sensor has the ability to detect at the pg/mm.sup.2 level and can perform multi-analyte detection in real-time. The sensor can be used for rapid autonomous detection of pathogenic microorganisms and bioagents by field deployable platforms.

Inventors:
Publication Date:
Research Org.:
SNL-A (Sandia National Laboratories, Albuquerque, NM (United States))
Sponsoring Org.:
USDOE
OSTI Identifier:
1084224
Patent Number(s):
8,436,509
Application Number:
12/169,239
Assignee:
Sandia Corporation (Albuquerque, NM) SNL-A
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Branch, Darren W. High-frequency shear-horizontal surface acoustic wave sensor. United States: N. p., 2013. Web.
Branch, Darren W. High-frequency shear-horizontal surface acoustic wave sensor. United States.
Branch, Darren W. Tue . "High-frequency shear-horizontal surface acoustic wave sensor". United States. doi:. https://www.osti.gov/servlets/purl/1084224.
@article{osti_1084224,
title = {High-frequency shear-horizontal surface acoustic wave sensor},
author = {Branch, Darren W},
abstractNote = {A Love wave sensor uses a single-phase unidirectional interdigital transducer (IDT) on a piezoelectric substrate for leaky surface acoustic wave generation. The IDT design minimizes propagation losses, bulk wave interferences, provides a highly linear phase response, and eliminates the need for impedance matching. As an example, a high frequency (.about.300-400 MHz) surface acoustic wave (SAW) transducer enables efficient excitation of shear-horizontal waves on 36.degree. Y-cut lithium tantalate (LTO) giving a highly linear phase response (2.8.degree. P-P). The sensor has the ability to detect at the pg/mm.sup.2 level and can perform multi-analyte detection in real-time. The sensor can be used for rapid autonomous detection of pathogenic microorganisms and bioagents by field deployable platforms.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 07 00:00:00 EDT 2013},
month = {Tue May 07 00:00:00 EDT 2013}
}

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