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Proceedings Paper

High sensitivity near-field opto-chemical sensors based on SnO2 particle layers
Author(s): M. Consales; M. Pisco; A. Buosciolo; R. Viter; V. Smyntyna; A. Cutolo; M. Giordano; A. Cusano
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Paper Abstract

In this work, the surprising sensing performances of opto-chemical sensors based on SnO2 particles layers against chemical pollutants either in air and water environment, at room temperature, are reported. The Electrostatic Spray Pyrolysis (ESP) method has been used to deposit the sensing coatings upon the distal end of standard fibers. This technique allows the fabrication of SnO2 layers composed of micron and sub-micron dimensions able to locally modify the profile of the optical near-field collected in the close proximity of the fiber tip. Such layers morphology leads to strong surface interactions between sensing coatings, analyte molecules and the evanescent contribute of the field, resulting in an excellent sensors sensitivity against chemical pollutants, even at room temperature.

Paper Details

Date Published: 2 July 2007
PDF: 4 pages
Proc. SPIE 6619, Third European Workshop on Optical Fibre Sensors, 66191G (2 July 2007); doi: 10.1117/12.738425
Show Author Affiliations
M. Consales, Univ. of Sannio (Italy)
M. Pisco, Univ. of Sannio (Italy)
A. Buosciolo, Univ. of Napoli (Italy)
R. Viter, Odessa National Univ. (Ukraine)
V. Smyntyna, Odessa National Univ. (Ukraine)
A. Cutolo, Univ. of Sannio (Italy)
M. Giordano, Institute for Composite and Biomedical Materials, CNR (Italy)
A. Cusano, Univ. of Sannio (Italy)

Published in SPIE Proceedings Vol. 6619:
Third European Workshop on Optical Fibre Sensors
Antonello Cutolo; Brian Culshaw; José Miguel López-Higuera, Editor(s)

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