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Micromachines 2018, 9(5), 217;

A Non-Resonant Kinetic Energy Harvester for Bioimplantable Applications

Department of Electrical and Electronics Engineering, Antalya Bilim University, Antalya 07190, Turkey
Graduate School of Natural and Applied Sciences, Middle East Technical University, Ankara 06800, Turkey
Spin & Photon Applications (SPA) Lab, Institute of Microstructure Technology, Karlsruhe Institute of Technology (KIT), Karlsruhe 76344, Germany
Author to whom correspondence should be addressed.
Received: 27 March 2018 / Revised: 26 April 2018 / Accepted: 4 May 2018 / Published: 5 May 2018
(This article belongs to the Special Issue Microsystems for Power, Energy, and Actuation)
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A linear non-resonant kinetic energy harvester for implantable devices is presented. The design contains a metal platform with permanent magnets, two stators with three-dimensional helical coils for increased power generation, ball bearings, and a polydimethylsiloxane (PDMS) package for biocompatibility. Mechanical excitation of this device within the body due to daily activities leads to a relative motion between the platform and stators, resulting in electromagnetic induction. Initial prototypes without packaging have been fabricated and characterized on a linear shaker. Dynamic tests showed that the friction force acting on the platform is on the order of 0.6 mN. The resistance and the inductance of the coils were measured to be 2.2 Ω and 0.4 µH, respectively. A peak open circuit voltage of 1.05 mV was generated per stator at a platform speed of 5.8 cm/s. Further development of this device offers potential for recharging the batteries of implantable biomedical devices within the body. View Full-Text
Keywords: energy harvesting; implantable devices; magnetic harvesters; MEMS energy harvesting; implantable devices; magnetic harvesters; MEMS

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Beyaz, M.İ.; Baelhadj, H.C.; Habibiabad, S.; Adhikari, S.S.; Davoodi, H.; Badilita, V. A Non-Resonant Kinetic Energy Harvester for Bioimplantable Applications. Micromachines 2018, 9, 217.

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