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Open AccessArticle

Inkjet 3D Printed MEMS Vibrational Electromagnetic Energy Harvester

1
Department of Microsystems, Wroclaw University of Science and Technology, 50370 Wroclaw, Poland
2
Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117608, Singapore
*
Author to whom correspondence should be addressed.
Energies 2020, 13(11), 2800; https://doi.org/10.3390/en13112800
Received: 6 May 2020 / Revised: 25 May 2020 / Accepted: 1 June 2020 / Published: 1 June 2020
Three-dimensional (3D) printing is a powerful tool that enables the printing of almost unlimited geometry in a few hours, from a virtual design to a real structure. In this paper, we present a micro-electromechanical energy harvester that utilized a 3D printed micromechanical structure combined with a miniature permanent magnet and a microelectronic coil towards a hybrid electromagnetic vibrational hybrid energy harvester. Various micromechanical structure geometries were designed, printed, and tested. The characteristic dimensions of the springs were from 200 m to 400 m and the total volume of the devices was below 1 cm3. The resonant frequencies (95–340 Hz range), as well as bandwidths (6–23 Hz range), for the developed prototypes were determined. The maximal generated output power was almost 24 W with a power density up to almost 600 W/cm3. View Full-Text
Keywords: 3D printing; MEMS; energy harvester 3D printing; MEMS; energy harvester
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MDPI and ACS Style

Kawa, B.; Śliwa, K.; Lee, V.C.; Shi, Q.; Walczak, R. Inkjet 3D Printed MEMS Vibrational Electromagnetic Energy Harvester. Energies 2020, 13, 2800.

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