Abstract
ABSTRACT In this paper, we prepare a polymer-dispersed liquid crystal (PDLC) thin film on glass substrates by the solvent- and polymerisation induced phase separation of a silicone adhesive (Platsil Gel) and a nematic liquid crystal, coupled with soft lithography. We show that the PDLC thin film can be used as a facile and portable sensor platform for the detection of toluene with the detection limit of 2.66 ppm by simply observing the director configuration change of the LC droplets dispersed in the polymer thin film. The sensor platform shows a rapid response time and can be repeatedly used for the detection of toluene.
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