Date:

2025-04-30

Title of Paper:

Vibration energy harvesting using a phononic crystal with point defect states

Journal:

Applied physics letters

Summary:

A vibration energy harvesting generator was studied in the present research using point-defect
phononic crystal with piezoelectric material. By removing a rod from a perfect phononic crystal, a
resonant cavity was formed. The elastic waves in the range of gap frequencies were all forbidden
in any direction, while the waves with resonant frequency were localized and enhanced in the
resonant cavity. The collected vibration energy was converted into electric energy by putting a
polyvinylidene fluoride film in the middle of the defect. This structure can be used to
simultaneously realize both vibration damping and broad-distributed vibration energy harvesting.

Co-author:

H. LV, X. Tian et al. (corr. au)

Volume:

102

Page Number:

034105

Translation or Not:

No

Date of Publication:

2013-01-22