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US 2019/0170513 A1Published application
Magnetic nanoparticle-based gyroscopic sensor
AssigneeThe Board of Trustees of Western Michigan University
InventorsBrian G. Krug, Johnson A. Asumadu
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Abstract
A gyroscopic detection system utilizes magnetic nanoparticles that are suspended in a solution and exposed to a rotating magnetic field. The nanoparticles experience angular deviation from their axes if an external force is applied to the system. Solution composition and oscillation frequency may be varied to optimize the gyroscopic feedback.
Claims18
A sensor comprising:
- a container;
- a liquid disposed in the container;
- a plurality of magnetic particles disposed in the liquid, the magnetic particles defining magnetic poles and moments of inertia;
- an electrical power source providing alternating electrical current;
- a plurality of conductive coils operably corrected to the electrical power source such that electrical current passing through the conductive coils generates a rotating magnetic field acting on the magnetic particles and causing the magnetic particles to rotate with the magnetic field whereby the particles define axes of rotation;
- and wherein angular movement of the coils causes angular movement of the magnetic field, thereby generating a force causing the orientations of the axes of rotation of the particles to change, thereby causing a change in the alternating current to the conductive coils that can be utilized to determine at least one of angular position, angular movement, and angular acceleration of the coils.
3 more elements
A method of sensing angular movement, comprising:
- providing a plurality of magnetic particles disposed in a liquid, the magnetic particles defining magnetic poles and moments of inertia;
- generating a rotating magnetic field acting on the magnetic particles by causing an electrical current to pass through at least one conductive coil to cause the magnetic particles to rotate with the magnetic field to define axes of rotation;
- determining a magnitude of an angular movement of the at least one conductive coil utilizing a change in the electrical current to the at least one conductive coil.
Dependencies are inferred from the claim text.