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Archives of Acoustics,
31, 4(S), pp. 47-52, 2006
Ultrasonic chemical sensor with organic monomolecular layer
In this work a structure of a ultrasonic chemical sensor with organic monomolecular layer
as well as introductory measurement with the help of a set-up constructed in IFTR PAS are
presented. Chemical composition of this layer is an equimolar mixture of 5-[[1,3-dioxo-3- [4-
(1-oxooctadecyl) phenyl] propyl] amino] – 1,3 – benzenedicarboxylic acid (DA) and cetylamine
(CA). The thickness of this layer is equal to dimension of one molecule. The sensor
layer was deposited on one channel of the bi-channel sensor delay line (made from lithium
niobiate) by means of the Langmuir–Blodgett method. The chemical sensitivity of this sensor
to some mixtures of air with vapor of volatile organic compounds has been investigated.
as well as introductory measurement with the help of a set-up constructed in IFTR PAS are
presented. Chemical composition of this layer is an equimolar mixture of 5-[[1,3-dioxo-3- [4-
(1-oxooctadecyl) phenyl] propyl] amino] – 1,3 – benzenedicarboxylic acid (DA) and cetylamine
(CA). The thickness of this layer is equal to dimension of one molecule. The sensor
layer was deposited on one channel of the bi-channel sensor delay line (made from lithium
niobiate) by means of the Langmuir–Blodgett method. The chemical sensitivity of this sensor
to some mixtures of air with vapor of volatile organic compounds has been investigated.
Keywords:
ultrasonic chemical sensor, Langmuir–Blodgett layers, air-organic vapor mixtures, volatile organic compounds.
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