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Updated: Jun 18, 2026
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Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics
Published on: August 5, 2020
Force-frequency effect of thickness mode langasite resonators.
Haifeng Zhang1, Joseph A Turner, Jiashi Yang
1Department of Engineering Mechanics, University of Nebraska-Lincoln, W317.4 Nebraska Hall, Lincoln, NE 68588, United States.
Ultrasonics
|November 28, 2009
Summary
Langasite resonators show promise for sensor applications. This study analyzes the force-frequency effect in langasite plates, crucial for understanding mechanical load impacts on resonant frequency.
Area of Science:
- Materials Science
- Acoustics
- Solid State Physics
Background:
- Langasite resonators are gaining attention for their favorable properties, including excellent temperature stability, strong piezoelectric coupling, low acoustic loss, and high quality factor (Q factor).
- The force-frequency effect, a phenomenon where mechanical load alters a resonator's resonant frequency, is critical for applications like pressure sensors.
Purpose of the Study:
- To theoretically and numerically analyze the frequency shift in langasite resonators under diametrical forces.
- To investigate the sensitivity of the force-frequency effect concerning nonlinear material constants.
Main Methods:
- Theoretical analysis of frequency shift in thin, circular langasite plates.
- Numerical simulations to model the force-frequency effect.
- Sensitivity analysis with respect to nonlinear material constants.
Main Results:
- Quantification of frequency shift due to diametrical forces in langasite plates.
- Detailed analysis of how nonlinear material properties influence the force-frequency effect.
Conclusions:
- The study provides valuable insights into the force-frequency effect in langasite, essential for accurate device design.
- The findings are expected to aid in experimental determination of nonlinear material constants and optimize resonator-based sensor development.
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