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Schematic of a polarization-patterned piezoelectric plate uniformly covered by electrodes. Polarization directions can vary with position and are denoted by up and down arrows/colors.
Wave transmission through the piezoelectric filter as a function of frequency for open circuit (solid) and closed circuit (dashed) configurations. Inset: layout of piezoelectric polarization (top) and complex displacement norm field of the pressure wave propagating through the optimal structure in the open (middle) and closed (bottom) circuit configurations.
(a) Layout of piezoelectric polarization for a bending waveguide. Poynting vector magnitude of the incoming pressure wave in (b) open and (c) closed circuit configurations.
Piezoelectric polarization pattern for the wave (a) harvester and (b) actuator with corresponding distributions of the [(c) and (d)] Poynting vector magnitude.
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