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US 9,869,619 B2Granted
Self-assembled magnetic arrays
AssigneeThe General Hospital Corporation
InventorsRalph Weissleder, Hakho Lee, David Issadore
Life of this patent
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Abstract
A magnetic device includes a substrate and an array including a plurality of magnetic particles, in which a magnetic dipole moment direction of each magnetic particle in a majority of the magnetic particles in the array alternates with respect to a magnetic dipole direction of a directly adjacent magnetic particle or directly adjacent magnetic particles in the array.
Claims10
A magnetic device comprising:
- a substrate;
- an array including a plurality of magnetic particles arranged in a single layer on the substrate, wherein a magnetic dipole moment direction of each magnetic particle in a majority of the magnetic particles alternates with respect to a magnetic dipole direction of a directly adjacent magnetic particle in the array, wherein an average maximum dimension of each particle of the plurality of magnetic particles is between about 50 nm to about 125 microns, and wherein directly adjacent particles within the array are separated by a spacing of 5 nm or less;
- a fluid flow channel having a bottom surface arranged adjacent to the array, wherein the magnetic dipole moment direction of each magnetic particle in the majority of the magnetic particles is oriented substantially orthogonal to the bottom surface of the fluid flow channel.
Dependencies are inferred from the claim text.