HOLOGRAPHIC GRATINGS RECORDED IN POLYMER HYDROGELS - AN ORIGINAL APPLICATION AS A SENSOR IN AQUEOUS ENVIRONMENT

Authors
LEY C CALDERARA I LOUGNOT DJ
Citation
C. Ley et al., HOLOGRAPHIC GRATINGS RECORDED IN POLYMER HYDROGELS - AN ORIGINAL APPLICATION AS A SENSOR IN AQUEOUS ENVIRONMENT, Measurement science & technology, 8(9), 1997, pp. 997-1000
Citations number
9
Categorie Soggetti
Instument & Instrumentation",Engineering
Journal title
Measurement science & technology → ACNP
ISSN journal
09570233
Volume
8
Issue
9
Year of publication
1997
Pages
997 - 1000
Database
ISI
SICI code
0957-0233(1997)8:9<997:HGRIPH>2.0.ZU;2-N
Abstract
The degree of swelling of a polymer hydrogel depends on the aqueous so lution in which it is immersed, among other factors. When a volume pha se hologram is engraved in a hydrogel film, the dependence of its diff raction efficiency on osmosis in saline solution can be used as a prob e for measuring the concentration of the solute. The sensitivity of th is in-line control technique is better than 20 mg dm(-3) of KBr.