Journal
APPLIED PHYSICS LETTERS
Volume 100, Issue 21, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4722814
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- SIEMEMS Ltd., China Shanghai Branch
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We proposed a multi-frequency sandwich type vibration energy harvester to widen the effective frequency range of vibration energy harvester. The harvester is composed of three resonant structures with different natural frequencies. The resonant structures are two cantilevers each with bi-layer coils and a plane spring with a magnet. The maximum peak-peak voltages of the three different frequencies are 172 mV, 104 mV, and 112mV at the frequencies of 235 Hz, 330 Hz, and 430 Hz, respectively. The first maximum voltage is much higher than the others, because the coils in both cantilevers can produce voltages. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4722814]
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