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:
- Issue 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)
- 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. 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 = {2013},
month = {5}
}