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Proceedings Paper

Sol-gel based optical chemical sensors
Author(s): Aleksandra Lobnik; Špela Korent Urek; Matejka Turel; Nina Frančič
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Paper Abstract

The growing activity in the field of optical chemical sensors has resulted in numerous sensing schemes, new indicator dyes, various polymeric matrix, size and shapes and highly diversified methods of immobilization. The sensor characteristics are dependent upon the choice of indicator, polymer, immobilization technique, and also size. Sol-gel technology provides a low-temperature method for obtaining porous silicate glass matrices. It enables to obtain material in the form of films, powders, monoliths, fibres or nanoparticles. Organic reagents and molecular receptors can be easily immobilized in the matrices. Moreover, one of the unique features of the sol-gel process is that the properties of the final network structure, such as hydrophobicity, thickness, porosity, flexibility, reactivity and stability can be easily tailored by controlling the process conditions, the type and the size of the precursors and catalysis. Here we will report about several sensor designed over the years based on sol-gel materials for monitoring and controlling different parameters, such as heavy metals, amines, phosphates, organophosphates.

Paper Details

Date Published: 6 May 2011
PDF: 11 pages
Proc. SPIE 8073, Optical Sensors 2011; and Photonic Crystal Fibers V, 80730V (6 May 2011); doi: 10.1117/12.886819
Show Author Affiliations
Aleksandra Lobnik, Univ. of Maribor (Slovenia)
Špela Korent Urek, Institute of Environmental Protection and Sensors (Slovenia)
Matejka Turel, Univ. of Maribor (Slovenia)
Nina Frančič, Univ. of Maribor (Slovenia)

Published in SPIE Proceedings Vol. 8073:
Optical Sensors 2011; and Photonic Crystal Fibers V
Kyriacos Kalli; Francesco Baldini; Jiri Homola; Robert A. Lieberman, Editor(s)

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