Wireless energy transfer based on strain-mediated composite multiferroics

A subclass of magnetoelectric composite multiferroics can bi-directionally couple AC electric fields with AC magnetic fields using mechanical strain as a mediator. Serendipitously, AC electric fields, AC magnetic fields, and vibrations, are the mediums used in capacitance-, induction-, and acoustic-...

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Bibliographic Details
Published in:Smart materials and structures 2020-01, Vol.29 (1), p.15014
Main Authors: Newacheck, Scott, Youssef, George
Format: Article
Language:English
Subjects:
contactless energy transfer
magnetoelectric
multiferroic composite
wireless power transfer
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Summary:A subclass of magnetoelectric composite multiferroics can bi-directionally couple AC electric fields with AC magnetic fields using mechanical strain as a mediator. Serendipitously, AC electric fields, AC magnetic fields, and vibrations, are the mediums used in capacitance-, induction-, and acoustic-based wireless energy transfer (WET), respectively. As a result, strain-mediated composite multiferroics are uniquely positioned to transform all these modes of WET. This paper analytically and experimentally reports the ability of composite multiferroic hollow cylinders to wirelessly transfer energy to and from laminated multiferroic plates by the use of AC magnetic flux as an energy carrier. In all, the composite cylinders in conjunction with laminated plates are successfully demonstrated as a novel technology of bi-directional magnetoelectric-based WET. We report a peak extracted power of ∼100 W, which is enough to wirelessly power a multitude of small electronic devices.
ISSN:0964-1726
1361-665X
DOI:10.1088/1361-665X/ab545b