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The piezoelectric acoustic actuators were fabricated with PMN-PT single crystal membranes patterned by circular inter-digitated electrodes (IDEs) using silicon-based microelectromechanical systems (MEMS) technology. In order to investigate the effect of the electrodes patterned onto the PMN-PT membrane on the performance of the fabricated piezoelectric MEMS acoustic actuators, we simulated and analyzed...
The triple-layered multimorph piezoelectric acoustic actuators were fabricated and studied to investigate the effects of the electrical configurations of the piezoelectric ceramics on the voltage-displacement and frequency response characteristics. The serial and parallel polarized piezoelectric multimorph ceramics were electrically connected in two different configurations of series and parallel,...
This paper proposes a new method to improve the frequency response characteristics of the ultra-thin piezoelectric acoustic actuators. In order to improve the sound quality of the piezoelectric acoustic actuators, we simulated and analyzed the modal vibration characteristics of the piezoelectric acoustic actuator using the finite-element analysis (FEA) method and experimental studies. The ultra-thin...
This paper reports the low-frequency reinforced ferroelectric acoustic actuators with high performances. In order to achieve a higher output sound pressure level and wider frequency response range, we have proposed the novel rubber/resin bi-layer acoustic diaphragm. From the simulated and measured frequency response results, the ferroelectric acoustic actuators with a rubber/resin bi-layer diaphragm...
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