Vibration and energy harvesting performance of a piezoelectric phononic crystal beam

Phononic crystal could be used in the vibration energy harvesting devices as its capacity to modulate elastic wave propagation. This paper presents a piezoelectric phononic crystal cantilever beam with periodic variable thicknesses for vibration energy harvesting. The transfer matrix method (TMM) is introduced to analyze the natural frequencies and the band structure of the phononic crystal beam. The influences of structural parameters, such as...