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Modelling of chemical surface acoustic wave sensors and comparative analysis of new sensing materials
Author(s) -
Hribšek Marija F.,
Ristić Slavica S.,
Radojković Bojana M.,
Filipović Zoran Lj.,
Ristić Ognjen R.
Publication year - 2012
Publication title -
international journal of numerical modelling: electronic networks, devices and fields
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.249
H-Index - 30
eISSN - 1099-1204
pISSN - 0894-3370
DOI - 10.1002/jnm.1870
Subject(s) - dichloromethane , polyaniline , surface acoustic wave , materials science , polymer , surface acoustic wave sensor , acoustics , chemical sensor , conductive polymer , chemical engineering , analytical chemistry (journal) , composite material , chemistry , organic chemistry , physics , electrode , engineering , polymerization , solvent
SUMMARY Comparative analysis of different, new gas sensing materials in surface acoustic wave chemical sensors is presented. Different gas sensing materials as polyaniline (PANI), Teflon AF 2400, polyisobutylene (PIB), polyepichlorohydrin (PECH) are considered. They are chosen according to the type of gas to be detected and the desired accuracy: Teflon AF 2400 thin film for the detection of CO 2 , PANI nanocomposites film that belongs to the group of conductive polymers for the detection of CO, NO 2 and phosgene (COCl 2 ), and PECH and PIB for the detection of dichloromethane (CH 2 Cl 2 , DCM). In the analysis, the simple and useful method of the complete analyses of gas chemical sensors is used. The method is based on the electrical equivalent circuit of the surface acoustic wave sensor. The method is very efficient and can be used for the optimal design of CO 2 sensors. The results are compared with those presented in public literature and good agreement is obtained, demonstrating the validity of modelling. Copyright © 2012 John Wiley & Sons, Ltd.