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Investigations on an electronic tongue with polymer microfluidic cell for liquid sensing and identification
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Jacesko, Stefany, Abraham, Jose K., Taeksoo, Ji, Varadan, Vijay K., Cole, Marina and Gardner, J. W. (2005) Investigations on an electronic tongue with polymer microfluidic cell for liquid sensing and identification. Smart Materials and Structures, 14 (5). pp. 1010-1016. doi:10.1088/0964-1726/14/5/039 ISSN 0964-1726.
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Official URL: http://dx.doi.org/10.1088/0964-1726/14/5/039
Abstract
Design and experimental results of a surface acoustic wave (SAW) microsensor with polymer microfluidic cell for the sensing and identification of liquids is presented in this paper. This microsensor, which is a part of a smart tongue-nose system, uses a horizontally polarized SAW (SH-SAW) for the detection and identification of liquids. The SH-SAW microsensors are fabricated on 36 degrees-rotated Y-cut X-propagating LiTaO3 (36Y X.LT) substrate. This design consists of a dual-delay-line configuration in which one line is free and other one is metallized and shielded. Polymer microfluidic cells were designed and fabricated on top of it using a. microstereolithography system to avoid dielectric loading of the IDTs by liquid which leads to unwanted dielectric sensitivity to the sensor. Due to the high electromechanical coupling of the 36Y X.LT substrate, it could detect differences in electrical properties and hence distinguish different liquids. It is clear from these results that the microsensor based on 36Y X.LT is an effective liquid identification system for the electronic tongue application.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
| Journal or Publication Title: | Smart Materials and Structures | ||||
| Publisher: | Institute of Physics Publishing Ltd | ||||
| ISSN: | 0964-1726 | ||||
| Official Date: | October 2005 | ||||
| Dates: |
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| Volume: | 14 | ||||
| Number: | 5 | ||||
| Number of Pages: | 7 | ||||
| Page Range: | pp. 1010-1016 | ||||
| DOI: | 10.1088/0964-1726/14/5/039 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access |
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