SH wave vibration in functionally graded porous piezoelectric composite loaded with Newtonian conductive/non-conductive liquid

Kumari, Shreeta; Sahu, Sanjeev A.

doi:10.1080/17455030.2022.2058716

Cited by 6 publications

(1 citation statement)

References 34 publications

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“…The propagation of shear-horizontal waves in the conductive liquid-loaded functionally graded porous piezoelectric media (FGPPM) has been investigated recently. The dispersion and the attenuation curves have been plotted to describe the impact of various parameters, namely gradient parameter of both the piezoelectric material, thickness of FGPPM plate, imperfect interface parameter, relative permittivity, and conductivity of the liquid medium [ 30 ]. A thickness shear solidly mounted resonator based on Yttrium-doped AlN has been suggested recently as a high-sensitive liquid sensor [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

Multimode Design and Piezoelectric Substrate Anisotropy Use to Improve Performance of Acoustic Liquid Sensors

Smirnov

Анисимкин

Воронова³

et al. 2022

Sensors

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Using acoustic wave modes propagation in piezoelectric plates loaded with conductive liquids, peculiarities of the mode-liquid acoustoelectric interaction are studied. It is found that (i) in contrast to bulk and surface acoustic waves propagating in piezoelectric semiconductors, the acoustoelectric attenuation of the modes is not symmetric in respect to its maximum, (ii) a large increase in attenuation may be accompanied by a small decrease in phase velocity and vice versa, (iii) the peculiarities are valid for “pure” (without beam steering) and “not pure” (with beam steering) modes, as well as for modes of different orders and polarizations, and (iv) conductivity of test liquid increases electromagnetic leakage between input and output transducers, affecting results of the measurements. To decrease the leakage, the liquid should be localized between transducers, outside the zone over them. If so, the mode sensitivity may be as large as 8.6 dB/(S/m) for amplitude and 107°/(S/m) for phase. However, because of comparable cross-sensitivity towards viscosity and dielectric permittivity, modes with selective detection of liquid conductivity are not found.

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Section: Introductionmentioning

confidence: 99%