Cole, Marina, Sehra, G., Gardner, J. W. and Varadan, V. K. (2004) Development of smart tongue devices for measurement of liquid properties. IEEE Sensors Journal, 4 (5). pp. 543-550. doi:10.1109/JSEN.2004.832855 ISSN 1530-437X.

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Abstract

In this paper, we describe the design and characterization of shear horizontal surface acoustic wave devices for the analysis of liquid samples. Devices were fabricated on both 36degrees rotated Y-cut X-propagating LiTaO3 and LiNbO3 substrates. The design consists of a dual delay-line configuration where one delay line is metallized and shielded, while the other is left electrically active. Experiments to characterize the devices in terms of sensitivity, temperature dependence, and mass loading have been conducted and the results presented. Different liquid samples, i.e., water, orange juice, and milk, are 100% linearly separable using principal components analysis. In addition, it is possible to measure the fat content (+/-0.1%) as well as the freshness of full (whole) milk.

Item Type:	Journal Article
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering Q Science > QC Physics
Divisions:	Faculty of Science, Engineering and Medicine > Engineering > Engineering
Journal or Publication Title:	IEEE Sensors Journal
Publisher:	Institute of Electrical and Electronic Engineers
ISSN:	1530-437X
Official Date:	3 September 2004
Dates:	Date Event 3 September 2004 Published
Volume:	4
Number:	5
Number of Pages:	8
Page Range:	pp. 543-550
DOI:	10.1109/JSEN.2004.832855
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access

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