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Updated: Jun 24, 2026

Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics
Published on: August 5, 2020
Propagation of thickness-twist waves in a piezoelectric ceramic plate with unattached electrodes
Zheng-Hua Qian1, Kikuo Kishimoto, Jiashi Yang
1Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology, Tokyo 152-8552, Japan. qian.z.aa@m.titech.ac.jp
Abstract:
We analyze the propagation of thickness-twist waves in an unbounded piezoelectric ceramic plate with air gaps between the plate surfaces and two electrodes. These waves are also called anti-plane or shear-horizontal waves with one displacement component only. An exact solution is obtained from the equations of the linear theory of piezoelectricity. Dispersion relations of the waves are obtained and plotted. Results show that the wave frequency or speed is sensitive to the air gap thickness. This effect can be used to manipulate the behavior of the waves and has implications in acoustic wave devices.
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