Title :
Reducing the temperature sensitivity of Love-wave sensors
Author :
Jakoby, B. ; Vellekoop, M.J.
Author_Institution :
Electron. Instrum. Lab., Delft Univ. of Technol., Netherlands
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;
Conference_Titel :
Ultrasonics Symposium, 1998. Proceedings., 1998 IEEE
Conference_Location :
Sendai
Print_ISBN :
0-7803-4095-7
DOI :
10.1109/ULTSYM.1998.762185
