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http://dx.doi.org/10.5369/JSST.2008.17.2.143

A study on the fabrication of polymer-coated SAW sensors and their sensing properties for some toxic chemical compounds  

Lim, Y.R. (School of Electrical Engineering and Computer Science, Kyungpook National University)
Park, B.H. (Agency for Defense Development the Repubic of Korea)
Choi, S.K. (Agency for Defense Development the Repubic of Korea)
Song, K.D (School of Electronic and Electrical Engineering, Sangju National University)
Lee, D.D. (School of Electrical Engineering and Computer Science, Kyungpook National University)
Publication Information
Journal of Sensor Science and Technology / v.17, no.2, 2008 , pp. 143-146 More about this Journal
Abstract
Polymer-coated film SAW sensors have been fabricated and their sensing properties for toxic chemicals have been extensively investigated. Four types of the toxic chemical compounds of hydrogen cyanide(AC), carbonyl dichloride(CG), pinacolyl methylfluorophosphonate(GD), 2,2'-dichlorodiethylthio ether(HD) were used as target gases. SAW sensors using five different kinds of polymers were used to detect toxic chemicals and their gas sensing characteristics were investigated. The polymers used as the sensing materials were polyisobutylene(PIB), polyepichlorohydrin(PECH), polydimethylsiloxane(PDMS), polybutadiene(PBD) and polyisoprene(PIP). The recommendable mixing ratio of PIB, PECH, PDMS, PBD and PIP to solvents were 1:30, 1:40, 1:10, 1:30 and 1:30, respectively. The sensing characteristics of the SAW sensors were measured by using E-5061A network analyzer.
Keywords
SAW sensor; toxic chemical compounds;
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