3-d printed devices formed with magnetic inks and methods of making graded index structures

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United States of America Patent

PATENT NO 11845219
APP PUB NO 20200353682A1
SERIAL NO

16864522

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Abstract

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A 3-D printed device comprising one or more structures, the structures comprising a plurality of magnetically responsive particles and one or more diblock or triblock copolymers; the diblock or triblock copolymers having an A-B, A-B-A, or A-B-C block-type structure in which the A-blocks and C-blocks are an aromatic-based polymer or an acrylate-based polymer and the B-blocks are an aliphatic-based polymer. These 3-D printed devices may be formed using a method that comprises providing a magnetic ink composition; applying the magnetic ink composition to a substrate in a 3-D solvent cast printing process to form one or more structures; and drying the one or more structures formed from the magnetic ink composition. The dried structures can exhibit one or more regions of magnetic permeability greater than 1.3×10−6 H/m.

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Patent Owner(s)

Patent OwnerAddress
PRESIDENT AND FELLOWS OF HARVARD COLLEGE17 QUINCY STREET CAMBRIDGE MA 02138

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Duncan, Bradley P Andover, US 4 13
Fedynyshyn, Theodore H Sudbury, US 29 233
Lewis, Jennifer A Cambridge, US 72 942

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