4.6 Article

Broadband energy-harvesting using a two degree-of-freedom vibrating body

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APPLIED PHYSICS LETTERS
卷 98, 期 21, 页码 -

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AMER INST PHYSICS
DOI: 10.1063/1.3595278

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  1. Ministry of Land, Transport and Maritime Affairs [07High Tech A01]
  2. Ministry of Education, Science and Technology, Republic of Korea [NRF-2010-0018753]

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In this letter, we introduce the concept and describe the realization of a two degree-of-freedom piezoelectric energy-harvesting device. The proposed system consists of a proof mass (i.e., a rigid body) and two cantilever beams; it can utilize both translational and rotational degrees of freedom. Therefore, it exhibits double power peaks and an increased frequency bandwidth, and it can generate power more efficiently than conventional vibration-based single degree-of-freedom devices. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3595278]

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