Magnetic Nanocomposite Cilia Energy Harvester

Khan, M. A.; Alfadhel, Ahmed; Kosel, Jürgen

doi:10.1109/tmag.2016.2527733

Cited by 11 publications

(8 citation statements)

References 10 publications

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“…This may be explained by the low water and gas permeability of Parylene C [39,63] . Parylene C also exhibits a high biocompatibility, is optically transparent and flexible (∼4 GPa of Young's modulus) [64][65][66][67] , which are additional features making it suitable for marine animal monitoring applications. house wireless communication module [68,69] ) was a function of the distance between the sensor and the composite magnet.…”

Section: Polymer Coatings For Corrosion Protectionmentioning

confidence: 99%

“…Isotropic NdFeB powder is also inexpensive, due to the comparatively large abundance of Nd and Fe, and has good thermal aging characteristics [40][41][42] . As a result of this, NdFeB-based composites have been proposed for applications such as soft MEMs [43,44] microfluidic pressure sensitive valves [45] , micromanipulation tools [46] , microrobots [27] or energy harvesting [65] .…”

Section: Introductionmentioning

confidence: 99%

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Tunable, Flexible Composite Magnets for Marine Monitoring Applications

et al. 2018

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Section: Polymer Coatings For Corrosion Protectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tunable, Flexible Composite Magnets for Marine Monitoring Applications

et al. 2018

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“…Also, it is processed at a low temperature (< 100 °C) by methods such as spin coating, mold casting, and drop casting, which makes it easy to integrate with CMOS processes. A polydimethylsiloxane (PDMS) − iron nanowire composite based energy harvester was reported earlier but it suffers from poor power density (1.98 μW m −3 ) at a high excitation force (≈6.0 g) …”

Section: Introductionmentioning

confidence: 99%

Broadband Magnetic Composite Energy Harvester

2018

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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) À 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 Â 12 Â 8 mm 3 . This composite structure is fabricated on top of a micromachined 1 cm 2 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.

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“…Iron (Fe) NWs in particular are very suitable for this application, since Fe has a high saturation magnetization, and in the form of NWs, the remanence magnetization retains a high value too, [18][19][20][21][22] which renders them nano-sized permanent magnets. [23][24][25][26][27][28] When exposed to a corrosive environment, they form a shell of Fe oxide around the core. The shell grows over time until the core is completely oxidized.…”

Section: Introductionmentioning

confidence: 99%

Ultra‐Low Power Corrosion Sensor Made of Iron Nanowires on Magnetic Tunnel Junctions

et al. 2018

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Corrosion sensors are of critical importance for monitoring the destructive potential of a corrosive environment. Due to their large surface-to-volume area, nanowires react with a remarkably high speed, rendering them attractive corrosion-sensing elements. To avoid the difficulties related to contacting nanowires, we present a magnetic approach, exploiting the fast reaction of nanowires to the environment. Iron nanowires have a high magnetization value, which decreases upon nanowire corrosion. Due to shape anisotropy, they also possess a large remnant magnetization, which is detectable by a magnetic tunnel junction sensor. Iron nanowires were fabricated by electrochemical deposition, placed on top of the magnetic tunnel junction and aligned using a magnetic field. The nanowires provide a bias field causing a change of the characteristic curve of the tunnel junction. The corrosion sensor was tested in

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Magnetic Nanocomposite Cilia Energy Harvester

Cited by 11 publications

References 10 publications

Tunable, Flexible Composite Magnets for Marine Monitoring Applications

Tunable, Flexible Composite Magnets for Marine Monitoring Applications

Broadband Magnetic Composite Energy Harvester

Ultra‐Low Power Corrosion Sensor Made of Iron Nanowires on Magnetic Tunnel Junctions

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