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Title: Ultra-wide frequency broadening mechanism for micro-scale electromagnetic energy harvester
Authors: Liu, H.
How Koh, K.
Lee, C. 
Issue Date: 2014
Citation: Liu, H., How Koh, K., Lee, C. (2014). Ultra-wide frequency broadening mechanism for micro-scale electromagnetic energy harvester. Applied Physics Letters 104 (5) : -. ScholarBank@NUS Repository.
Abstract: This work proposed a hybrid frequency broadening (HFB) mechanism in micro-scale for vibration energy harvesting with ultra-wide bandwidth. A strong HFB behavior is induced by the Duffing stiffening of the clamped-clamped beam stretching and further stimulated continuously by three distributed resonances including out-of-plane mode I at 62.9Hz, torsion mode II at 82.1Hz, and twist mode III at 150Hz. At the acceleration of 1.0g, the microfabricated device with a small area of 6×6mm2 is able to broaden the operating bandwidth from 62.9Hz to be as wide as 383.7Hz. This design methodology can be implemented for efficient electromagnetic energy harvesting. © 2014 AIP Publishing LLC.
Source Title: Applied Physics Letters
ISSN: 00036951
DOI: 10.1063/1.4863565
Appears in Collections:Staff Publications

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