Magnetic fluid manipulators and methods for their use

One aspect of the invention provides a device for sorting non-magnetic particles. The device includes: (a) a fluid holding chamber comprising an inner and outer surface; (b) a fluid in contact with the inner surface of the fluid holding chamber, said fluid containing a dispersion of magnetic particl...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Friedman Gennady, Yellen Benjamin B
Format:	Patent
Sprache:	eng
Schlagworte:	MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROMSOLID MATERIALS OR FLUIDS MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS TRANSPORTING
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Beschreibung
Zusammenfassung:	One aspect of the invention provides a device for sorting non-magnetic particles. The device includes: (a) a fluid holding chamber comprising an inner and outer surface; (b) a fluid in contact with the inner surface of the fluid holding chamber, said fluid containing a dispersion of magnetic particles and at least two sets of non-magnetic particles; and (c) at least two sources of magnetic fields positioned in close proximity to, or inside of, the fluid holding chamber. The at least two sources of magnetic fields produce a changeable pattern of magnetic field minima and maxima regions thereby causing said non-magnetic particles in the fluid to be transported towards the magnetic field minima regions by magnetic force. At least one of said sources of magnetic fields comprises an array of magnetizable features on a micrometer or nanometer length scale.