DocumentCode :
2985484
Title :
SAW sensor for liquid chromatography using 2-port resonator
Author :
Nomura, Tooru ; Saitoh, Atushi ; Furukawa, Shoji
Author_Institution :
Shibaura Inst. of Technol., Tokyo, Japan
fYear :
2004
fDate :
23-27 Aug. 2004
Firstpage :
536
Lastpage :
541
Abstract :
The propagation characteristics of surface acoustic waves (SAW) along a solid surface vary considerably depending on the ambient environment. Therefore, SAW devices are used as sensors in a variety of fields. In particular, surface acoustic waves propagating in the shear horizontal (SH) mode only possess components for which particle displacements are parallel to the surface, which means that, even in a liquid, they propagate without loss of energy. Sensors that utilize such waves are thus suitable for sensing the characteristics of liquids. A flow-type liquid sensor using a 2-port SH-SAW resonator was constructed and used to measure properties, such as electrical characteristics, density and viscosity, of various liquids. Results of measurements using this liquid flow sensing system on a variety of liquids are presented. Finally, this sensing system is demonstrated to be an effective sensor in liquid chromatography, due to its small size, enabling measurement on a very small amount of liquid, and its highly stable operation.
Keywords :
chromatography; density measurement; electric variables measurement; liquids; surface acoustic wave resonators; surface acoustic wave sensors; viscosity measurement; 2-port resonator; SAW sensor; density measurement; electrical characteristics measurement; flow-type liquid sensor; liquid chromatography; liquid flow sensing system; propagation characteristics; shear horizontal mode; surface acoustic waves; viscosity measurement; Acoustic propagation; Acoustic sensors; Acoustic waves; Density measurement; Liquids; Propagation losses; Sensor phenomena and characterization; Solids; Surface acoustic wave devices; Surface acoustic waves;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Frequency Control Symposium and Exposition, 2004. Proceedings of the 2004 IEEE International
ISSN :
1075-6787
Print_ISBN :
0-7803-8414-8
Type :
conf
DOI :
10.1109/FREQ.2004.1418514
Filename :
1418514
Link To Document :
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