Magnetic field detector
AssigneeXerox Corporation
InventorsWerner E. L. Haas, Gary A. Dir
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Abstract
A magneto-optic cell comprising a composition responsive to magnetic fields. The composition comprises a ferrofluid and metal flakes which align with the ferrofluid in response to magnetic lines of force and along the magnetic lines of force. Detection of the presence of a magnetic field is thereby provided.
Claims10
A magnetic field detector, comprising between two magnetic field permeable substrates a layer of composition comprising ferrofluid and metal flakes said metal flakes being suspended in said ferrofluid and magnetically detached from magnetic particles in said ferrofluid yet capable of being aligned in the direction of a magnetic field to which the ferrofluid is subjected, one of said substrates being transparent.
Dependencies are inferred from the claim text.