DocumentCode
2748771
Title
K + detection using shear horizontal acoustic modes
Author
Caliendo, C. ; Amico, A.D. ; Verardi, P. ; Verona, E.
Author_Institution
CNR-Istituto di Acustica, Roma, Italy
fYear
1990
fDate
4-7 Dec 1990
Firstpage
383
Abstract
An acoustic delay line sensor for the detection of potassium ion concentration in water has been implemented and tested. The device uses the propagation of shear horizontal (SH) waves in a piezoelectric plate (Love waves) in order to minimize acoustic energy loss in the liquid. One of the plate surfaces is covered with a polyvinyl-chloride-valinomycin membrane, a well-known ligand for the detection of potassium ions. The devices has shown a fairly good linearity of the response in the analyzed pK+ range of K+ concentration between 1.49 and 4. The operation is reversible and the response is highly reproducible. Measurements have demonstrated a high selectivity of the device with respect to exposure to Na+ solutions
Keywords
Love waves; chemical analysis; detectors; surface acoustic wave devices; ultrasonic delay lines; K+ ion concentration detection; Love waves; SAW chemical sensor; SiO2; acoustic delay line sensor; pK+ range; piezoelectric plate; polyvinyl-chloride-valinomycin membrane; quartz substrate; response linearity; selectivity; shear horizontal acoustic modes; water; Acoustic devices; Acoustic propagation; Acoustic sensors; Acoustic signal detection; Acoustic testing; Acoustic waves; Biomembranes; Delay lines; Energy loss; Surface acoustic wave devices;
fLanguage
English
Publisher
ieee
Conference_Titel
Ultrasonics Symposium, 1990. Proceedings., IEEE 1990
Conference_Location
Honolulu, HI
Type
conf
DOI
10.1109/ULTSYM.1990.171392
Filename
171392
Link To Document