Method and Apparatus for Transporting Magnetic Fluids and Particles
AssigneeUniversitaet Kassel
InventorArno Ehresmann
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Abstract
A method of transporting a magnetic fluid (104) or at least one magnetic particle (509, 510). The method comprises the steps of: providing a magnetic layer (102) with an asymmetric re-magnetization property; placing the magnetic fluid (104) or the magnetic particle(s) (509, 510) in the vicinity of the magnetic layer (102) so that they can magnetically interact with the magnetic layer (102); and applying an external magnetic field.
Claims32
A method of transporting a magnetic fluid (104) or at least one magnetic particle (509, 510, 604, 700), the method comprising the steps of:
- providing a magnetic layer (102) with:
- an asymmetric re-magnetization property, pinned magnetic domains, or artificially fabricated magnetic domains;
- placing the magnetic fluid (104) or the magnetic particle(s) (509, 510, 604, 700) in the vicinity of the magnetic layer (102) so that they can magnetically interact with the magnetic layer (102);
- and
- applying an external magnetic field.
2-3. (canceled)
A method of moving in a predetermined direction a domain wall that separates adjacent magnetic domains in a magnetic layer (102), the method comprising the steps of:
- applying an external magnetic field to the magnetic layer (102), the component of the magnetic field in the plane of the magnetic layer (102) having a gradient at the location of the wall;
- and
- changing the external magnetic field, thereby moving the domain wall.
A device for transporting a magnetic fluid or at least one magnetic particle (509, 510, 604, 700), the device comprising
- a magnetic layer (102) with an asymmetric re-magnetization property, domains with a pinned magnetic moment, or artificial magnetic domains, which layer (102) can magnetically interact with the magnetic fluid (104) or the magnetic particle(s) (509, 510, 604, 700);
- and a magnetic field source for applying an external magnetic field to the device.
(canceled)
Dependencies are inferred from the claim text.