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Reference type: Book Chapter
Authors: Dickert FL, Forth P, Tortschanoff M, Bulst WE, Fischerauer G, Knauer U
Publication date: 1997
Chapter title: SAW and QMB for chemical sensing.
Page numbers: 120-123.

Book title: Proceedings of the 1997 IEEE International Frequency Control Symposium
Publisher: IEEE
City: New York
ISBN: 0-7803-3729-8

Abstract: We aimed to compare the properties of high frequency, highly sensitive surface acoustic wave (SAW)-resonators and the more robust quartz micro balances (QMB) in chemical sensing. The sensitivities of both transducers to organic solvent vapors were determined. The correlation between sensor effects and resonant frequencies of the devices was checked using molecular cavities as sensor materials [1,2]. additionally we tested the potential of another means of sensor material synthesis compatible with fabrication processes, namely the procedure of molecular imprinting [3,4,5]. Analyte-adapted cavities can be generated by a polymerization process in presence of the analyte to be. An imprint of the latter is left behind in the polymer after removal of the template molecule. In this way sensitive and selective coatings can easily be generated, They are e.g. suitable for organic solvent vapor detection devices


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