Interaction of xerogel layers with vapours and liquids studied by evamescent-wave spectroscopy

0303724 - URE-Y 20000104 RO eng A - Abstrakt
Matějec, Vlastimil - Berková, Daniela - Chomát, Miroslav - Hayer, Miloš - Kašík, Ivan
Interaction of xerogel layers with vapours and liquids studied by evamescent-wave spectroscopy.
Iasi: University Al.I.Cuza, 2000. The 10th Conference on Physical Chemistry. Abstracts of Communications. s. SY.SG TL 2
[Conference on Physical Chemistry /10./. 26.09.2000-29.09.2000, Iasi]
Grant CEP: GA ČR GA102/98/1358
Výzkumný záměr: CEZ:AV0Z2067918
Klíčová slova: optical sensors * thin films
Kód oboru RIV: JA - Elektronika a optoelektronika, elektrotechnika

Effects of water and isopropanol vapours on the refractive index of polysiloxane xerogel thin layers with different polarity are investigated by means of optical fibers coated with these layers. It is shown that xerogel layers exhibit hight scattering optical losses and that the polarity of layers doped with methyl groups is substantially lower than that of pure polysiloxane layers. The Langmuir adsorption isotherms for water and isopropanol vapours were determined from the experiment.
Trvalý link: http://hdl.handle.net/11104/0113911