Nanocrystalline Cu-doped Zirconia Film-coated Long-period Fiber Grating for CO Monitoring at High Temperature
Dense nanocrystalline copper-doped zirconia (CDZ, Cu:Zr=16:84) thin film was coated on the surface of a 125 µm-diameter long-period fiber grating (LPFG) by a facile synthesis route involving polymeric precursor coating and subsequent thermal treatments. The CDZ film had a uniform thickness of ~100 nm and grain size of 20 to 35 nm after a brief annealing step at 700°C for 1 hour. This CDZ thin film coated LPFG (CDZ-LPFG) was evaluated at a high temperature of 550°C for its change of resonant wavelength (R) in response to the variation of carbon monoxide (CO) concentration in nitrogen (N2). The R was found to shift toward longer wavelength when increasing the CO concentration. The CDZ-LPFG sensor response was found to be reproducible and reversible at low level CO concentrations (<1,000 ppm) but became irreversible when the CO concentration was high (e.g. at 10,000 ppm). The high temperature stability of the CDZ material in CO-containing atmospheres was studied to understand the limit of CO measurement range.
X. Tang et al., "Nanocrystalline Cu-doped Zirconia Film-coated Long-period Fiber Grating for CO Monitoring at High Temperature," Proceedings of SPIE, SPIE, Apr 2009.
The definitive version is available at http://dx.doi.org/10.1117/12.819016
Electrical and Computer Engineering
Keywords and Phrases
Copper-Doped Zirconia; Nanocrystalline; Carbon monoxide; Thin films
Article - Conference proceedings
© 2009 SPIE, All rights reserved.