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Liquid sensor based on a piezoelectric lateral electric field – excited resonator

Keywords:

B.D. Zaitsev – Dr.Sc. (Phys.-Math.), Head of Laboratory, Saratov branch of Kotelnikov IRE RAS A.A. Teplykh – Ph.D. (Phys.-Math.), Senior Research Scientist, Saratov branch of Kotelnikov IRE RAS. Е-mail: teplykhaa@mail.ru А.М. Shikhabudinov – Ph.D. (Phys.-Math.), Research Scientist, Saratov branch of Kotelnikov IRE RAS


The influence of viscous and conducting liquid on the characteristics of a piezoelectric lateral electric field-excited resonator based on the X-cut lithium niobate plate has been investigated. It has been found that the contact of a free surface of such resonator with conducting or viscous liquid leads to the substantial variation of its electrical impedance, so the modulus of electrical impedance at frequency near the parallel resonance to be a parameter unambiguously associated with the viscosity and conductivity.
References:

 

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  2. Anisimkin I.V., Anisimkin V.I. Attenuation of acoustic normal modes in piezoelectric plates loaded by viscous liquids // IEEE TUFFC. 2006. V. 53. № 8. P.1487–1492.
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  4. Vetelino J.F. A lateral field excited acoustic wave sensor platform // Proc. 2010 IEEE Int. Ultrasonics Symp. P. 2269–2272.
  5. Zaitsev B.D., Kuznetsova I.E., Shikhabudinov A.M., Vasiliev A.A.The research of the piezoelectric crystal resonators with the lateral field excitation // Proc. 2010 IEEE Int. Ultrasonics Symp. P. 946–949.
  6. Zaitsev B.D., Kuznetsova I.E., Shikhabudinov A.M.., Teplykh A.A., Borodina I.A. The study of Piezoelectric Lateral-Electric-Field-Excited Resonator // IEEE TUFFC. 2014. V. 61. № 1. P. 166–172.

 

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