Common Misconceptions in Piezoelectric Researchers
Kenji Uchino
The development of piezoelectric actuators necessitates an interdisciplinary approach, encompassing knowledge from multiple areas, including materials physics and chemistry, electrical and mechanical engineering, and design and marketing strategies. The dissemination of erroneous information is a phenomenon that occurs due to the dearth of knowledge possessed by researchers who are new to the field. This phenomenon can be attributed to the presence of misconceptions, which consequently result in a delay in the innovative developments of the subsequent generation. This paper serves as an instructive tutorial, aiming to rectify common misconceptions among researchers in the fields of ferroelectric and piezoelectric domains. The text reviews the top 12 misconceptions among recent publications, primarily related to the misunderstanding of the following terms relevant to this area: “Voltage and Electric Field,” “Ionic Displacement and Strain,” “Mistake in Strain Measurement,” “Boundary Condition Dependence of Permittivity and Elasticity,” “Energy Transmission Coefficient and Efficiency,” “Thin Film Device Designing,” “Piezoelectric Vibration Damping,” “Mechanical Impedance Matching,” “Piezoelectric Energy Harvesting,” “Resonance and Anti-Resonance,” “System Design Principle,” and “Best-Selling Devices.” These topics were followed by their rectifications, which aimed to promote future smooth progress in piezoelectric actuators.
