Use of Anisotropic Materials as Chemical Detectors
- 1 January 1972
- journal article
- Published by Taylor & Francis in Analytical Letters
- Vol. 5 (3) , 187-192
- https://doi.org/10.1080/00032717208066106
Abstract
The visual detection between crossed polarizers, of organic vapors on various liquid crystal films is reported. Non-selective detection is achieved in the ppm range. However, opportunities exist for bettering selectivity and sensitivity as illustrated with a combined polymer-liquid crystal detection system for amines. Also described is the detection of liquid droplets by utilizing changes in the birefringence of polycarbonate membrane filters.Keywords
This publication has 3 references indexed in Scilit:
- Detection of amines by using the depolymerization of poly(chloroaldehydes)Microchemical Journal, 1971
- Detection Of Amines With Dichloroacetaldehyde And Chloral-Dichoroacetaldehyde CopolymerAnalytical Letters, 1969
- Liquid CrystalsScientific American, 1964