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A piezomagnetoelastic structure for broadband vibration energy harvesting

Research output: Contribution to journalArticle

Original languageEnglish
Pages (from-to)254102 - 254105
Number of pages3
JournalApplied Physics Letters
DatePublished - Jun 2009


This letter introduces a piezomagnetoelastic device for substantial enhancement of piezoelectric power generation in vibration energy harvesting. Electromechanical equations describing the nonlinear system are given along with theoretical simulations. Experimental performance of the piezomagnetoelastic generator exhibits qualitative agreement with the theory, yielding large-amplitude periodic oscillations for excitations over a frequency range. Comparisons are presented against the conventional case without magnetic buckling and superiority of the piezomagnetoelastic structure as a broadband electric generator is proven. The piezomagnetoelastic generator results in a 200% increase in the open-circuit voltage amplitude (hence promising an 800% increase in the power amplitude).

Additional information

Publisher: American Institute of Physics



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