Dissolved Hydrogen Sensor

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00014-05-C-0010
Agency Tracking Number: N031-0868
Amount: $606,442.00
Phase: Phase II
Program: SBIR
Awards Year: 2005
Solicitation Year: 2003
Solicitation Topic Code: N03-126
Solicitation Number: 2003.1
Small Business Information
ARETE ASSOCIATES
P.O. Box 6024, Sherman Oaks, CA, 91413
DUNS: 082191198
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Guy J Farruggia
 Senior Engineer
 (703) 413-0290
 farruggia@arete-dc.com
Business Contact
 Philip Selwyn
Title: Vice President
Phone: (703) 413-0290
Email: selwyn@arete-dc.com
Research Institution
N/A
Abstract
Areté Associates proposes to develop a novel sensor using thick-film technology to measure variations in the concentration of dissolved hydrogen in the ocean environment. We will employ a unique layout of the classic Wheatstone bridge design that uses screened-palladium metal resistors as the transducer. Palladium absorbs hydrogen gas and changes its electrical resistance in response to the absorption. The sensor has active and inactive bridge branches. Specially selected coatings will make the sensor impervious to electrode surface changes due to wet/dry seawater cycling, and to chemical contamination. In Phase I, Areté, working with selected vendors, developed a prototype half-bridge sensor using specifically designed palladium inks. This sensor and its associated electronics will be used as a test bed heading into Phase II. We have addressed the critical issues of active and passive branch coatings. For Phase II we will design, develop and test a small number of prototype sensors and test them with an array of complementary sensors that has already been deployed at sea.

* information listed above is at the time of submission.

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