Micro-Machined Thin Film Sensor Arrays For The Detection Of H2, Containing Gases, And Method Of Making And Using The Same.

Baum, Thomas H

Title: Micro-Machined Thin Film Sensor Arrays For The Detection Of H2, Containing Gases, And Method Of Making And Using The Same.

Patent · Tue Jul 22 00:00:00 EDT 2003

OSTI ID:880423

Baum, Thomas H ^[1]

New Fairfield, CT

The present invention provides a hydrogen sensor including a thin film sensor element formed by metal organic chemical vapor deposition (MOCVD) or physical vapor deposition (PVD), on a micro-hotplate structure. The thin film sensor element includes a film of a hydrogen-interactive metal film that reversibly interacts with hydrogen to provide a correspondingly altered response characteristic, such as optical transmissivity, electrical conductance, electrical resistance, electrical capacitance, magneto resistance, photoconductivity, etc., relative to the response characteristic of the film in the absence of hydrogen. The hydrogen-interactive metal film may be overcoated with a thin film hydrogen-permeable barrier layer to protect the hydrogen-interactive film from deleterious interaction with non-hydrogen species. The hydrogen permeable barrier may comprise species to scavenge oxygen and other like species. The hydrogen sensor of the invention may be usefully employed for the detection of hydrogen in an environment susceptible to the incursion or generation of hydrogen and may be conveniently configured as a hand-held apparatus.

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Research Organization:: Advanced Technology Materials, Inc. (Danbury, CT)

DOE Contract Number:: FC36-99GO10451

Assignee:: Advanced Technology Materials, Inc. (Danbury, CT)

Patent Number(s):: US 6596236

Application Number:: 10/828115

OSTI ID:: 880423

Country of Publication:: United States

Language:: English

References (22)

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