Publication

Apparatus for retaining magnetic particles within a flow-through cell

Martinus Adela Maria Gijs, Amar Rida
2003
Patents

Abstract

Apparatus for retaining magnetic particles within a segment of a flow-through cell during flow of a fluid through the cell. The apparatus comprises (a) an electrical current source (12) (b) an electromagnet (13) having a winding (14) connected to the current source (12) and an air gap (23) between at least one pair of poles (21, 22) each of which has a corrugated outer surface and (c) a flow-through cell (18) which is configured and dimensioned to receive an amount of magnetic particles to be retained within the flow-through cell and to allow flow of a liquid through the flow-through cell. The liquid carries molecules or particles to be captured by means of the magnetic particles. A portion of the flow-through cell (18) is inserted in air gap (23).

Official source

https://infoscience.epfl.ch/entities/publication/d03b5463-bdd9-4bed-8760-7450a1502e6b

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Martinus Adela Maria Gijs, Amar Rida
2003
Patents

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/d03b5463-bdd9-4bed-8760-7450a1502e6b

About this result

Related concepts (32)

Electric current

An electric current is a flow of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is defined as the net rate of flow of electric charge through a surface. The moving particles are called charge carriers, which may be one of several types of particles, depending on the conductor. In electric circuits the charge carriers are often electrons moving through a wire. In semiconductors they can be electrons or holes.

Current source

A current source is an electronic circuit that delivers or absorbs an electric current which is independent of the voltage across it. A current source is the dual of a voltage source. The term current sink is sometimes used for sources fed from a negative voltage supply. Figure 1 shows the schematic symbol for an ideal current source driving a resistive load. There are two types. An independent current source (or sink) delivers a constant current. A dependent current source delivers a current which is proportional to some other voltage or current in the circuit.

Electromagnetic coil

An electromagnetic coil is an electrical conductor such as a wire in the shape of a coil (spiral or helix). Electromagnetic coils are used in electrical engineering, in applications where electric currents interact with magnetic fields, in devices such as electric motors, generators, inductors, electromagnets, transformers, and sensor coils. Either an electric current is passed through the wire of the coil to generate a magnetic field, or conversely, an external time-varying magnetic field through the interior of the coil generates an EMF (voltage) in the conductor.

Related publications (32)

Apparatus for retaining magnetic particles within a flow-through cell

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