Hydrogen Gas Sensor

Tech ID: 22529 / UC Case 2001-446-0

Full Description

A hydrogen gas sensor and/or switch fabricated from arrays nanowires composed of metal or metal alloys that have stable metal hydride phases. The sensor and/or switch response times make it quite suitable for measuring the concentration of hydrogen in a flowing gas stream. The sensor and/or switch preferably operate by measuring the resistance of several metal nanowires arrayed in parallel in the presence of hydrogen gas. The nanowires preferably comprise gaps or break junctions that can function as a switch that closes in the presence of hydrogen gas. Consequently, the conductivity of the nanowires of the sensor and/or switch increases in the presence of hydrogen

Suggested uses

Hydrogen gas sensors


Relative to existing hydrogen gas sensors based on nickel/palladium resistors, palladium nanowire-based hydrogen sensors possess the following advantages:

- Extremely low power consumption (pW range)

- Efficient room temperature operation (existing sensors must be heated during operation)

- Small size (an small as 1.0mm2 or smaller)

- Very fast (ms or faster) response times

Patent Status

Country Type Number Dated Case
United States Of America Issued Patent 7,186,381 03/06/2007 2001-446


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  • Penner, Reginald M.

Other Information


Hydrogen gas sensor, Palladium nanowire

Categorized As

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  • Institute for Innovation Logo

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