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US 10,408,215 B2Granted
Electrically driven magnetic shape memory apparatus and method
AssigneeBoise State University
InventorPeter Müllner
Life of this patent
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Abstract
An actuation apparatus may include a magnetic shape memory (MSM) element configured to contract locally at a portion of the MSM element in response to local exposure to a magnetic field distribution component that is substantially perpendicular to a longitudinal axis of the MSM element. The apparatus may further include a plurality of conductive coils laterally offset from the MSM element. Central axes of each conductive coil of the plurality of conductive coils may be substantially parallel to a longitudinal axis of the MSM element.
Claims14
A micropump apparatus comprising:
- a plate having a surface with a first opening and a second opening defined therein, the first opening and the second opening passing through the plate;
- a magnetic shape memory (MSM) element positioned flush with the surface and adjacent to the first opening and the second opening, the MSM element configured to contract locally and form a neck that defines a cavity at a portion of the MSM element in response to local exposure, at the portion of the MSM element, to a magnetic field distribution component that is substantially perpendicular to a longitudinal axis of the MSM element;
- and
- a plurality of conductive coils having a common central axis that is laterally offset from the MSM element, the common central axis substantially parallel to the longitudinal axis of the MSM element, and the plurality of conductive coils spaced along the MSM element from the first opening of the surface to the second opening of the surface.
1 more element
Dependencies are inferred from the claim text.