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3D Printing of NiZn ferrite/ABS Magnetic Composites for Electromagnetic Devices

Published online by Cambridge University Press:  01 July 2015

Yunqi Wang
Department of Materials, Parks Road, Oxford, OX1 3PH, U.K.
Flynn Castles
Department of Materials, Parks Road, Oxford, OX1 3PH, U.K.
Patrick S. Grant
Department of Materials, Parks Road, Oxford, OX1 3PH, U.K.
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3D printing is a versatile fabrication method that offers the potential to realize complex 3D devices with metamaterial characteristics in a single process directly from a computer aided design. However, the range of functional devices that might be realized by 3D printing is limited by the current range of materials that are compatible with a given 3D printing process: fused deposition modelling (FDM), which is a widely used 3D printing method, typically employs only common thermoplastics. Here we describe the development of a magnetic feedstock based on polymer-ferrite composite that is compatible with FDM. The feasibility of the technique is demonstrated by the permittivity and permeability measurement of direct printed blocks and the fabrication of a complex 3D diamond-like lattice structure. The development of printable magnetic composites provides increased design freedom for direct realization of devices with graded electromagnetic properties operating at microwave frequencies.

Copyright © Materials Research Society 2015 

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