Title :
Design of an improved acoustic plate mode delay line for biosensor applications
Author :
Andle, J.C. ; Josse, F. ; Vetelino, J.F. ; McAllister, D.J.
Author_Institution :
Dept. of Electr. Eng., Maine Univ., Orono, ME, USA
Abstract :
The design of an improved acoustic plate mode (APM) biochemical sensing device is reported. The device, fabricated on a 0.5-mm-thick ZX-lithium niobate substrate, consists of a dual delay line configuration which could be used in either a vector voltmeter phase discriminator or a dual oscillator measurement system. The device exhibits excellent adjacent mode rejection without sacrificing the high sensitivity to electrical loadings. The device, which shows a better phase linearity, is currently being evaluated in various measurement systems as a chemical sensor or biosensor
Keywords :
biosensors; chemical sensors; surface acoustic wave devices; ultrasonic delay lines; LiNbO3 substrate; acoustic plate mode delay line; biochemical sensing device; biosensor; design; dual delay line configuration; dual oscillator measurement system; vector voltmeter phase discriminator; Acoustic devices; Acoustic measurements; Biosensors; Current measurement; Delay lines; Linearity; Niobium compounds; Oscillators; Phase measurement; Voltmeters;
Conference_Titel :
Ultrasonics Symposium, 1992. Proceedings., IEEE 1992
Conference_Location :
Tucson, AZ
Print_ISBN :
0-7803-0562-0
DOI :
10.1109/ULTSYM.1992.275994
