Method and apparatus for making quantitative measurements of loc

Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material

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324204, 324 714, 324226, 422 681, 436526, G01N 2772, G01N 2774

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active

060465859

ABSTRACT:
Apparatus for quantitatively measuring groups of magnetic particle. The particles are complexed with substances to be determined and are excited in a magnetic field. The magnetic particles are thereby caused to oscillate at the excitation frequency in the manner of a dipole to create their own fields. These fields are inductively coupled to sensing coils fabricated in a gradiometer configuration. The output signals from the sensing coils are appropriately amplified and processed to provide useful output indications.

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Baselt et al., A Biosensor based on force Microscope Technology, Naval Research Lab., J. Vac. Science Tech. B., vol. 14, No.2 (5pp) (Apr. 1996).

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