Attenuation coefficient for surface acoustic waves in fluid region

Authors

  • Bui Thu Hang
  • Bui Duc Tung
  • Nguyen Tien Dat
  • Chu Duc Trinh

DOI:

https://doi.org/10.15625/0866-7136/34/4/2335

Keywords:

Rayleigh – Surface Acoustic Wave sensor (R–SAW), liquid sensor, Aluminium Nitride

Abstract

In recent years, surface acoustic wave devices used in bio-sensing applications have demonstrated high sensitivity in the detection of fluid properties such as density, viscosity, stream velocity. In this paper, a more effective measurement of the SAWsensorstructure is presented. It is reported that at density of 6 g/cm3, the amplitude of mechanical wave is excited while for electrical signal, attenuation at 3 g/cm3 reaches a peak.In our analysis, single–crystal Aluminium Nitride substrate is used. Several parameters of leaky waves including displacement, decay constant in the liquid media are analyzed.

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Published

30-11-2012

How to Cite

Hang, B. T., Tung, B. D., Dat, N. T., & Trinh, C. D. (2012). Attenuation coefficient for surface acoustic waves in fluid region. Vietnam Journal of Mechanics, 34(4), 225–236. https://doi.org/10.15625/0866-7136/34/4/2335

Issue

Section

Research Paper