Patent ID: 9000774
Filing Date: 2015-04-07
Classification: G01N,G01R

Abstract:
1. A system for analyzing a material-under-test, comprising: a support structure; a mounted magnet mounted to the support structure; a free-floating magnet disposed below the mounted magnet; a diamagnet mounted to the support structure and positioned between the mounted magnet and the free-floating magnet such that the free-floating magnet floats in the air beneath the diamagnet; a rotation detection assembly configured to project a laser beam to the free-floating magnet to detect a rotation rate of the free-floating magnet, the rotation rate increasing or decreasing based on a drag torque effect of a material-under-test on the free-floating magnet; and a conductivity calculation unit in electrical communication with the rotation detection assembly, the conductivity calculation unit configured to calculate at least one of a conductivity and a resistivity of the material-under-test based on the detected rotation rate of the free-floating magnet, wherein the free-floating magnet physically is not connected to the material-under-test and rotates independently with respect to the material-under-test.