Type:
Book
Description:
The monitoring of gases and vapors of industrial and environmental interest was addressed using guided wave technologies. Hybrid optical devices making use of fiber optics and microoptics were used as an optical platform, on which to deposit gas or vapor-sensitive innovative materials. These materials, based on metal-coordinated porphyrins, phthalocyanines and their blends, were functionalized so as to offer their dielectric constants reversibly modulated by the interaction with analytes. The optical platform fitted to an electro-optical scanner, allowed the sensitive materials to be spectrally interrogated in the whole or in selected bands of the visible spectral range, so as to achieve a gas- or vapor-modulated absorption spectroscopy signal.The optical sensors were exposed to CO, SO2, NO2 and NH3 in the 25-100 ppm range. The overall sensor response was processed by means of chemometric methodologies …
Publisher:
Publication date:
1 Jan 2008
Biblio References:
Pages: 407-412
Origin:
Sensors And Microsystems