Abstract

A fiber optic intrinsic Fabry-Perot interferometric (IFPI) chemical sensor was developed by fine-polishing a thin layer of polycrystalline nanoporous MFI zeolite synthesized on the cleaved endface of a single mode fiber. The sensor operated by monitoring the optical thickness changes of the zeolite thin film caused by the adsorption of organic molecules into the zeolite channels. The optical thickness of the zeolite thin film was measured by white light interferometry. Using methanol, 2-propanol, and toluene as the model chemicals, it was demonstrated that the zeolite IPFI sensor could detect dissolved organics in water with high sensitivity.

Department(s)

Electrical and Computer Engineering

Sponsor(s)

United States. Department of Energy
A Consortium for Environmental Education and Technology Development (WERC)

Keywords and Phrases

Dissolved Organics; Fiber Chemical Sensor; White Light Interferometry

Library of Congress Subject Headings

Zeolites

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2006 Molecular Diversity Preservation International (MDPI), All rights reserved.

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