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Sensors 2006, 6(8), 835-847; doi:10.3390/s6080835

Nanoporous Zeolite Thin Film-Based Fiber Intrinsic Fabry-Perot Interferometric Sensor for Detection of Dissolved Organics in Water

1
Petroleum Recovery Research Center, New Mexico Institute of Mining and Technology, Socorro, NM 87801
2
Department of Electrical and Computer Engineering, New Mexico Institute of Mining and Technology, Socorro, NM 87801
3
Department of Chemical and Materials Engineering, University of Cincinnati, Cincinnati, OH 45221, USA
4
Department of Electrical and Computer Engineering, University of Missouri-Rolla, 141 Emerson Electric Co. Hall, Rolla, MO 65409, USA
*
Author to whom correspondence should be addressed.
Received: 17 March 2006 / Accepted: 2 May 2006 / Published: 22 August 2006
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Abstract

A fiber optic intrinsic Fabry-Perot interferometric (IFPI) chemical sensor wasdeveloped by fine-polishing a thin layer of polycrystalline nanoporous MFI zeolitesynthesized on the cleaved endface of a single mode fiber. The sensor operated bymonitoring the optical thickness changes of the zeolite thin film caused by the adsorption oforganic molecules into the zeolite channels. The optical thickness of the zeolite thin filmwas measured by white light interferometry. Using methanol, 2-propanol, and toluene as themodel chemicals, it was demonstrated that the zeolite IPFI sensor could detect dissolvedorganics in water with high sensitivity. View Full-Text
Keywords: Fiber chemical sensor; zeolite; white light interferometry; dissolved organics. Fiber chemical sensor; zeolite; white light interferometry; dissolved organics.
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Liu, N.; Hui, J.; Sun, C.; Dong, J.; Zhang, L.; Xiao, H. Nanoporous Zeolite Thin Film-Based Fiber Intrinsic Fabry-Perot Interferometric Sensor for Detection of Dissolved Organics in Water. Sensors 2006, 6, 835-847.

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