Integrated gradiometer array

Details Integrated gradiometer array Integrated gradiometer array

2007-07-10

2007-07-10

LeDynh, Bot (Department: 2862)

Electricity: measuring and testing

Magnetic

Magnetometers

C324S252000, C324S244000

Reexamination Certificate

active

11470128

ABSTRACT:
Magnetic field sensors, each generating an electrical output signal in proportion to the local magnetic field, are lithographically fabricated on a semiconductor substrate with a small spatial separation. The lateral dimension of the sensors and the separation length are the order of the minimum lithographic feature size. Comparing the electrical signals to the sensors results in a measurement of the local magnetic field gradient. Large field gradients, that vary on a small spatial scale, may be associated small magnetic structures such as microscopic magnetic particles. Detection of a field gradient can be used to infer the presence of a magnetic particle.

REFERENCES:
patent: 4692702 (1987-09-01), Huschelrath et al.
patent: 5652445 (1997-07-01), Johnson
patent: 5807758 (1998-09-01), Lee et al.
patent: 5833603 (1998-11-01), Kovacs et al.
patent: 5981297 (1999-11-01), Baselt
patent: 6064083 (2000-05-01), Johnson
patent: 6468809 (2002-10-01), Prinz et al.
patent: 6800913 (2004-10-01), Johnson et al.
patent: 2001/0033159 (2001-10-01), Forrest et al.

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