Innovative Undersea Sensors Using Relaxor Piezoelectric Single Crystals

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N65538-09-M-0040
Agency Tracking Number: N083-216-0012
Amount: $99,875.00
Phase: Phase I
Program: SBIR
Awards Year: 2009
Solicitation Year: 2008
Solicitation Topic Code: N08-216
Solicitation Number: 2008.3
Small Business Information
7112 Nighthawk Drive, Fort Wayne, IN, 46835
DUNS: 134500193
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Sara Wagar
 Principal Investigator
 (260) 402-0353
Business Contact
 George Lewis
Title: Principal Investigator
Phone: (260) 485-3752
Research Institution
The frequency spectrum of interest for hydrophones used in Naval tactical systems, ocean surveillance systems, or for environmental monitoring is continuing to expand, due to increased interest in passively detecting third-world submarines, merchant shipping, biologics, etc. as well as increased interest in multistatic active sonars. LewTech is proposing that our Phase I and follow-on phases concentrate on adapting the hydrophones used in tactical ASW sensors to use relaxor single-crystal piezoelectric materials rather than the traditionally-used polycrystalline lead-zirconate-titanate (PZT) piezoceramic materials. Hydrophones utilizing relaxor single-crystal ceramics can be designed to increase the sensitivity and bandwidth and reduce the self-noise, due to the improved electromechanical coupling factors, dielectric constant, and the loss tangent. The overall objective is to redesign a current Navy sonobuoy hydrophone, using single-crystal ceramics, and demonstrate improvements in sensitivity, self-noise, and bandwidth capabilities. Phase I will fabricate a prototype hydrophone and perform in-water testing and compare the results to the current hydrophone constructed of piezoelectric ceramic. LewTech has formed a strong team with a major sonobuoy manufacturer, UnderSea Sensor Systems, Inc. (USSI), a wholly-owned company of Ultra Electronics, to support the design and development of a practical, cost effective sensor(s) utilizing relaxor single-crystal ceramics.

* Information listed above is at the time of submission. *

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