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Title: Tuning the Relative Strengths of Electromechanical Resonances Using Non-Uniform Polarization of Piezoelectric Wafers

Abstract

A free piezoelectric disc with uniform polarization shows multiple radial modes of vibration that occur in the low-frequency 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 electromechanical resonances that is not possible with uniform polarization. We first discuss the theory behind our approach based on a Fourier-Bessel expansion technique. Then, we present several examples demonstrating the capability of tuning the relative strengths of electromechanical resonances in a piezoelectric disc using axisymmetric, non-uniform polarization profiles. The methodology presented in this article finds application in the design of single element transducers with multi-frequency operation, frequency-tuned sensors/receivers, collimated beam sources for underwater acoustics, and other non-traditional applications such as information storage.

Authors:
ORCiD logo; ORCiD logo; ORCiD logo
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1835156
Alternate Identifier(s):
OSTI ID: 1835157; OSTI ID: 2005829
Report Number(s):
LA-UR-21-27837
Journal ID: ISSN 2694-0884; 9646958
Grant/Contract Number:  
LDRD 20190568ECR; 89233218CNA000001
Resource Type:
Published Article
Journal Name:
IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control
Additional Journal Information:
Journal Name: IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control Journal Volume: 2; Journal ID: ISSN 2694-0884
Publisher:
Institute of Electrical and Electronics Engineers
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; Acoustics; electromechanical resonance; piezoelectric polarization; piezoelectric transducers; radial modes; ultrasonics

Citation Formats

Guha, Anurup, Pantea, Cristian, and Chillara, Vamshi Krishna. Tuning the Relative Strengths of Electromechanical Resonances Using Non-Uniform Polarization of Piezoelectric Wafers. United States: N. p., 2022. Web. doi:10.1109/OJUFFC.2021.3134935.
Guha, Anurup, Pantea, Cristian, & Chillara, Vamshi Krishna. Tuning the Relative Strengths of Electromechanical Resonances Using Non-Uniform Polarization of Piezoelectric Wafers. United States. https://doi.org/10.1109/OJUFFC.2021.3134935
Guha, Anurup, Pantea, Cristian, and Chillara, Vamshi Krishna. Sat . "Tuning the Relative Strengths of Electromechanical Resonances Using Non-Uniform Polarization of Piezoelectric Wafers". United States. https://doi.org/10.1109/OJUFFC.2021.3134935.
@article{osti_1835156,
title = {Tuning the Relative Strengths of Electromechanical Resonances Using Non-Uniform Polarization of Piezoelectric Wafers},
author = {Guha, Anurup and Pantea, Cristian and Chillara, Vamshi Krishna},
abstractNote = {A free piezoelectric disc with uniform polarization shows multiple radial modes of vibration that occur in the low-frequency 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 electromechanical resonances that is not possible with uniform polarization. We first discuss the theory behind our approach based on a Fourier-Bessel expansion technique. Then, we present several examples demonstrating the capability of tuning the relative strengths of electromechanical resonances in a piezoelectric disc using axisymmetric, non-uniform polarization profiles. The methodology presented in this article finds application in the design of single element transducers with multi-frequency operation, frequency-tuned sensors/receivers, collimated beam sources for underwater acoustics, and other non-traditional applications such as information storage.},
doi = {10.1109/OJUFFC.2021.3134935},
journal = {IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control},
number = ,
volume = 2,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 2022},
month = {Sat Jan 01 00:00:00 EST 2022}
}

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