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Proceedings Paper

Diffusion of ammonia gas in PDMS characterized by ATR spectroscopy
Author(s): Petr Levinský; Ladislav Kalvoda; Jan Aubrecht; Jaroslava Fojtíková
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Paper Abstract

The kinetic parameters of a chemo-optical transducer layer sensitive to gaseous ammonia are characterized by means of attenuation total reflection method. The tested layer consists of cross-linked polydimethylsiloxane matrix sensitized by quinoline-based organometallic dye showing the selective chemical reaction with ammonia. Upper and lower limits of the ammonia diffusion coefficient and the ammonia-dye reaction constant are derived from the obtained experimental data and compared with other data available in literature and obtained from computer simulations.

Paper Details

Date Published: 6 January 2015
PDF: 6 pages
Proc. SPIE 9450, Photonics, Devices, and Systems VI, 94500D (6 January 2015); doi: 10.1117/12.2070372
Show Author Affiliations
Petr Levinský, Czech Technical Univ. in Prague (Czech Republic)
Ladislav Kalvoda, Czech Technical Univ. in Prague (Czech Republic)
Jan Aubrecht, Czech Technical Univ. in Prague (Czech Republic)
Jaroslava Fojtíková, Czech Technical Univ. in Prague (Czech Republic)

Published in SPIE Proceedings Vol. 9450:
Photonics, Devices, and Systems VI
Pavel Tománek; Dagmar Senderáková; Petr Páta, Editor(s)

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