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Tuning the Relative Strengths of Electromechanical Resonances Using Non-Uniform Polarization of Piezoelectric Wafers
2021
IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control
A free piezoelectric disc with uniform polarization shows multiple radial modes of vibration that occur in the lowfrequency range. The strength of these radial mode resonances is fixed and reduces with increasing frequency or mode number. In this article, we show that piezoelectric wafers can be designed with appropriate non-uniform polarization profiles to selectively excite single or any combination of multiple radial modes with an additional capability of altering the relative strengths of
doi:10.1109/ojuffc.2021.3134935
fatcat:ot2riw7htbcfxoullh3bgmaixa