Magnetic biomedical sensors and sensing system for high-throughput biomolecule testing
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United States of America Patent
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Nov 21, 2017
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app pub date -
Oct 19, 2012
filing date -
Oct 19, 2011
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Abstract
A magnetic biosensor can include a magnetic stack comprising a free layer, a fixed layer, and a nonmagnetic layer between the free layer and the fixed layer. At least one of the free layer or the fixed layer may have a magnetic moment oriented out of a major plane of the free layer or the fixed layer, respectively, in an absence of an external magnetic field. The magnetic biosensor also may include a sample container disposed over the magnetic stack, a plurality of capture antibodies attached to a bottom surface of the sample container above the magnetic stack, and a magnetic field generator configured to generate a magnetic field substantially perpendicular to the major plane of the free layer or fixed layer.
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