Piezoelectric energy harvesting using shear mode 0.71Pb(Mg1/3Nb2/3)O3–0.29PbTiO3 single crystal cantilever

摘要

In this letter we presented a cantilever beam used for vibration energy harvesting based on shearnmode 0.71Pbu0001Mg1/3Nb2/3u0002O3 –0.29PbTiO3 single crystal. The working principle of the device wasninferred and the factors influencing the output were obtained using an analytical method. Thenelectrical properties under different conditions were studied systematically. Under a cyclic force ofn0.05 N u0001peak valueu0002, a peak voltage of 91.23 V, maximum power of 4.16 mW were measured at 60nHz with a proof mass of 0.5 g. The results demonstrate the potential of the device in energynharvesting applied to low-power portable electronics and wireless sensors. © 2010 American