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Hydrogen Gas Sensor

Technology Benefits

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

Technology Application

Hydrogen gas sensors

Detailed Technology 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

Supplementary Information

Patent Number: US7186381B2
Application Number: US2002160926A
Inventor: Penner, Reginald Mark | Walter, Erich C. | Favier, Fred
Priority Date: 20 Jul 2001
Priority Number: US7186381B2
Application Date: 30 May 2002
Publication Date: 6 Mar 2007
IPC Current: B32B000502 | B32B002704 | B32B002712 | G01N002700 | G01N002712 | G01N003300
US Class: 422098 | 029592 | 0295921 | 07300101 | 07300102 | 0730232 | 422050 | 422083 | 422088 | 422094 | 436043 | 436139 | 436144 | 436149 | 438048 | 438049 | 438139 | 438144 | 977700 | 977708 | 977720 | 977762 | 977773 | 977784
Assignee Applicant: The Regents of the University of California
Title: Hydrogen gas sensor
Usefulness: Hydrogen gas sensor
Summary: Measuring hydrogen concentration in a flowing gas stream.
Novelty: Hydrogen sensor for measuring hydrogen concentration in flowing gas stream, has array of wires with gap, and power source

Industry

Measurement/Testing

Sub Category

Measurement Tool

Application No.

7186381

Others

Additional Technologies by these Inventors

• Lithographically Patterned Nanowire Electrodeposition
• Methods for Fabricating Metal Nanowires
• Enhanced Cycle Lifetime With Gel Electrolyte For Mn02 Nanowire Capacitors

Tech ID/UC Case

22529/2001-446-0

Related Cases

2001-446-0

*Abstract

None

*IP Issue Date

Mar 6, 2007

*Principal Investigator

Name: Frederic Favier

Department:

Name: Reginald Penner

Department:

Name: Erich Walter

Department:

Name: Michael Zach

Department:

Country/Region

USA