Magnetic field imaging detection apparatus

Electricity: measuring and testing – Magnetic – Magnetic field detection devices

Reexamination Certificate

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C324S228000, C257S421000, C257SE29323

Reexamination Certificate

active

07405562

ABSTRACT:
A detection apparatus for detecting the presence of a sample, the detection apparatus comprising a chamber, ports for introducing a sample within the chamber, an actuation unit for establishing a controllable electromagnetic field in the chamber; and a sensing unit for sensing changes in the electromagnetic field due to the presence of the sample within the chamber. The sensing unit comprises a sensor device comprising a source and a drain embedded in a FET a gate for the FET, in which the gate is formed of a material whose conductivity is related to the electromagnetic field established in a nonconductive medium in contact with the gate.

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