Active sol-gel materials for fiber optic chemical sensors

Michael Krihak; Mahmoud R. Shahriari

doi:10.1117/12.190959

21 October 1994 Active sol-gel materials for fiber optic chemical sensors

Michael Krihak, Mahmoud R. Shahriari

Proceedings Volume 2293, Chemical, Biochemical, and Environmental Fiber Sensors VI; (1994) https://doi.org/10.1117/12.190959
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

Sol-gel materials were developed for potential fiber optic applications as films for detecting dissolved H₂S and H₂S vapor. Modification of the optical properties of gels were recognized by simply changing a processing parameter such as the type of catalyst of the introduction of a second precursor. Other properties such as chemical durability and photostability were also evaluated. Finally, the fluorescence quenching of thionin doped gels by dissolved H₂S revealed a sensitivity and reversibility in the parts-per-billion regime. After performing these preliminary steps to assess the gel's integrity, the thionin doped gel is now read for H₂S monitoring.

Citation Download Citation

Michael Krihak and Mahmoud R. Shahriari "Active sol-gel materials for fiber optic chemical sensors", Proc. SPIE 2293, Chemical, Biochemical, and Environmental Fiber Sensors VI, (21 October 1994); https://doi.org/10.1117/12.190959

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