US 9,518,957 B2 · Magnetic signal measuring apparatus and magnetic signal measuring method

Abstract

A magnetic signal measuring apparatus includes a first magnetic field applying unit that applies a first magnetic field to magnetic substances when a measured substance is binding to the magnetic substances, a second magnetic field applying unit that applies a second magnetic field to the magnetic substances to which the first magnetic field has been applied, and a SQUID that measures a magnetic signal derived from the magnetic substances. The first magnetic field has an intensity of such a degree that the magnetic substances do not flocculate with each other and such a degree that directions of magnetic moments in the magnetic substances can be aligned with each other. The second magnetic field has an intensity of such a degree that the magnetic substances do not flocculate with each other and such a degree that a magnetic signal can be obtained from the magnetic substances.

Claims8

Dependent claims

A magnetic signal measuring apparatus comprising:

a first magnetic field applying unit that is arranged to apply a first magnetic field to a sample in which a plurality of magnetic substances and a measured substance able to bind to the magnetic substances are mixed together in an unbound state, the first magnetic field having an intensity of such a degree that the magnetic substances do not flocculate with each other and such a degree that directions of magnetic moments in the magnetic substances can be aligned with each other;
a second magnetic field applying unit that is arranged to apply a second magnetic field to the magnetic substances to which the first magnetic field has been applied, the second magnetic field having an intensity of such a degree that the magnetic substances do not flocculate with each other and such a degree that a magnetic signal can be obtained from the magnetic substances;
and
a measurement unit that is arranged to measure the magnetic signal derived from the magnetic substances.

1 more element

A magnetic signal measuring method implemented by a magnetic signal measuring apparatus that measures a magnetic signal derived from a plurality of magnetic substances binding to a measured substance, the magnetic signal measuring method comprising:

applying a first magnetic field to a sample in which the magnetic substances and the measured substance are mixed together in an unbound state, the first magnetic field having an intensity of such a degree that the magnetic substances do not flocculate with each other and such a degree that directions of magnetic moments in the magnetic substances can be aligned with each other;
applying a second magnetic field to the magnetic substances to which the first magnetic field has been applied, the second magnetic field having an intensity of such a degree that the magnetic substances do not flocculate with each other and such a degree that the magnetic signal can be obtained from the magnetic substances;
and
measuring the magnetic signal derived from the magnetic substances.

1 more element

Dependencies are inferred from the claim text.

Magnetic signal measuring apparatus and magnetic signal measuring method

Life of this patent

Magnetic signal measuring apparatus and magnetic signal measuring method

Life of this patent

Abstract

Claims8