Design, Modeling, and Simulation of Two-Piece Trapezoidal Piezoelectric Devices for Sensing and Energy Harvesting

Table 3

FWHM bandwidth, the min./max. real power density of various trapezoidal bimorph beams [6, 8]. The one-piece trapezoidal bimorph design has the same dimension of the two-piece trapezoidal bimorph for the comparison.

Design	Max. FWHM bandwidth	Min. structural power density	Max. structural power density
1^st trapezoidal (one-piece)	2.9 Hz	5.18 mW/cm^3	10.37 mW/cm^3
2^nd trapezoidal (one-piece)	5.6 Hz	2.11 mW/cm^3	4.22 mW/cm^3
1^st trapezoidal (two-piece)	2.5 Hz	3.63 mW/cm^3	7.26 mW/cm^3
2^nd trapezoidal (two-piece)	1.1 Hz	8.40 mW/cm ^3	16.81 mW/cm ^3