Hydrogen Detection by Thin-Film Palladium Based Fabry Perot Sensors

Yan, Yu

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https://hdl.handle.net/2142/55631 Copy

Description

Title

Hydrogen Detection by Thin-Film Palladium Based Fabry Perot Sensors

Author(s)

Yan, Yu

Contributor(s)

Goddard, Lynford

Issue Date

2014-05

Keyword(s)

• hydrogen sensors
• palladium based sensors

Abstract

Thin-film Fabry-Perot hydrogen sensors with various thicknesses of Palladium are simulated, optimized, fabricated and tested. A reflection-transmission setup is built along with the necessary gas flow system. Detectors and thermistors are employed to measure the reflection and transmission of the sensor and the temperature of the system, respectively. Calibration is automated. The spectrum is recorded before and after hydrogen exposure and the change in reflection at the most sensitive wavelength is monitored closely. We extract important information like the limit of detection (minimum concentration detected) and the response time of the sensors we built. We optimize the wavelength used and the calibration process to achieve the most accurate results.

Type of Resource

text

Language

en

Permalink

http://hdl.handle.net/2142/55631

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