Measurement of acoustic properties of liquid using liquid flow SH-SAW sensor system

T. Nomura, Atsushi Saitoh, Y. Horikoshi

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

The SH-SAW resonator having narrow bandwidth and higher Q value has been used for sensing the properties in ionic and viscosity of liquid. The surface acoustic waves with the shear horizontal displacement (SH-SAW) are excited on a piezoelectric substrate; 36 rotated Y cut X prop. LiTaO3 (36 YX LiTaO3) and the liquid flow sensing system was constructed by using two-port resonator on the substrate. The flow of a sample liquid was interacted with the SAW only on the cavity of the resonator. The resonator was connected in an amplifier, to construct an SH-SAW oscillator. The frequency changes of the SH-SAW oscillator were detected as a sensor response. Experimental results showed that the response of the SAW sensor varied with both the conductivity and the square root of product of the density and viscosity of the liquid. Transit responses of the SAW sensor system to the flow of the sample liquid also showed a specific feature. It was found that these quantities were very useful to determine the properties of liquid.

Original languageEnglish
Pages (from-to)69-73
Number of pages5
JournalSensors and Actuators, B: Chemical
Volume76
Issue number1-3
DOIs
Publication statusPublished - 2001 Jun 1

Fingerprint

Acoustic properties
acoustic properties
liquid flow
Resonators
resonators
sensors
Sensors
Liquids
liquids
oscillators
viscosity
Viscosity of liquids
Substrates
transit
Surface waves
Q factors
amplifiers
Acoustic waves
Viscosity
shear

Keywords

  • Liquid flow system
  • Liquid sensing
  • SH-SAW
  • Two-port resonator

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

Cite this

Measurement of acoustic properties of liquid using liquid flow SH-SAW sensor system. / Nomura, T.; Saitoh, Atsushi; Horikoshi, Y.

In: Sensors and Actuators, B: Chemical, Vol. 76, No. 1-3, 01.06.2001, p. 69-73.

Research output: Contribution to journalArticle

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