Files in this item



application/pdfECE499-Sp2014-yan.pdf (753kB)
(no description provided)PDF


Title:Hydrogen Detection by Thin-Film Palladium Based Fabry Perot Sensors
Author(s):Yan, Yu
Contributor(s):Goddard, Lynford
Subject(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.
Issue Date:2014-05
Date Available in IDEALS:2015-08-13

This item appears in the following Collection(s)

Item Statistics