Reducing the temperature sensitivity of Love-wave sensors

Author

Jakoby, B. ; Vellekoop, M.J.

Author_Institution

Electron. Instrum. Lab., Delft Univ. of Technol., Netherlands

Volume

1

fYear

1998

fDate

1998

Firstpage

447

Abstract

Love waves are very advantageous for liquid sensing applications. Using a Love wave delay line as feedback element in an oscillator, allows to determine surface mass depositions on the delay line with high accuracy by monitoring oscillation frequency changes. This setup can be used for viscosity sensing and, using a chemical interface, for chemical sensing in liquids. In order to achieve a high effective sensitivity, the cross-sensitivity to temperature has to be kept low. In this contribution we discuss the choice of materials, crystal cut and the device parameters on the temperature coefficient of the sensor

Keywords

Love waves; chemical sensors; feedback oscillators; surface acoustic wave delay lines; surface acoustic wave sensors; viscosity measurement; Love wave sensor; chemical interface; chemical sensor; delay line; feedback oscillator; liquid sensor; surface mass deposition; temperature sensitivity; viscosity sensor; Chemical elements; Delay lines; Feedback; Frequency; Liquids; Monitoring; Oscillators; Surface waves; Temperature sensors; Viscosity;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1998. Proceedings., 1998 IEEE

Conference_Location

Sendai

ISSN

1051-0117

Print_ISBN

0-7803-4095-7

Type

conf

DOI

10.1109/ULTSYM.1998.762185

Filename

762185