Name:
Broadband Magnetic Composite Energy Harvester.pdf
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1.599Mb
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Accepted Manuscript
Type
ArticleKAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) DivisionElectrical Engineering Program
Date
2018-08-31Online Publication Date
2018-08-31Print Publication Date
2018-11Permanent link to this record
http://hdl.handle.net/10754/628518
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Energy from ambient vibrations is a potential source for powering the multitude of sensing and computing systems that comprise the internet of things. In order to exploit the broadband nature of natural low frequency vibrations, a magnetic composite energy harvester that has a dual resonant response in the sub–100 Hz region is presented by the authors. A unique structure composed of a proof mass mounted on an array of high aspect ratio, bioinspired hair like structures called cilia is fabricated using polydimethylsiloxane (PDMS) − NdFeB magnetic microcomposite. This structure has a frequency response comprised of two closely spaced resonant peaks facilitating the desirable broadband behavior at low frequency. Each cilium is shaped like a conical frustum with a top diameter of 200 μm and a bottom diameter of 450 μm and has a height of 3 mm, while the proof mass is cuboid with dimensions of 12 × 12 × 8 mm3. This composite structure is fabricated on top of a micromachined 1 cm2 planar coil, made up of 40 turns of 7.6 μm thick electroplated copper. The effect of material composition of the magnetic composite on the resonant frequencies, bandwidth, and energy harvesting performance of the device is studied.Citation
Khan MA, Mohammed H, Kosel J (2018) Broadband Magnetic Composite Energy Harvester. Advanced Engineering Materials. Available: http://dx.doi.org/10.1002/adem.201800492.Sponsors
Research reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST). The authors also thanked the KAUST Nanofabrication and imaging and characterization core laboratory staff at KAUST.Publisher
WileyJournal
Advanced Engineering MaterialsAdditional Links
https://onlinelibrary.wiley.com/doi/full/10.1002/adem.201800492ae974a485f413a2113503eed53cd6c53
10.1002/adem.201800492