Method for modifying and controlling magnetic field and apparatus for the same
AssigneeElectronics and Telecommunications Research Institute
InventorsHyo-Bong Hong, Jae-Chan Jeong, Seung-Min Choi, Chang-Beom Kim
Life of this patent
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Abstract
Disclosed herein are a method for modifying a magnetic field using magnetic nanoparticles and an apparatus therefor. The method for modifying a magnetic field includes applying current to a single solenoid coil or to two parallel solenoid coils, measuring a strength of a magnetic field generated by the current at a preset target location using a measurement sensor, and controlling the strength of the magnetic field based on a concentration of a magnetic nanoparticle sample mounted in the single solenoid coil or the two solenoid coils so that the strength of the magnetic field matches a preset target value.
Claims14
A method for modifying a magnetic field, comprising:
- applying current to a single solenoid coil or to two parallel solenoid coils;
- measuring a strength of a magnetic field generated by the current at a preset target location using a measurement sensor;
- and
- controlling the strength of the magnetic field based on a concentration of one or multiple magnetic nanoparticle samples mounted in the single solenoid coil or the two solenoid coils so that the strength of the magnetic field matches a preset target value,
- wherein the one or more magnetic nanoparticle samples are detachably mounted in respective sample mounting holes of an acrylic structure provided in the solenoid coils.
An apparatus for modifying a magnetic field, comprising:
- a power supply unit for applying current to a single solenoid coil or to two parallel solenoid coils;
- and
- a control unit for measuring a strength of a magnetic field generated by the current at a preset target location using a measurement sensor and controlling the strength of the magnetic field based on a concentration of one or more magnetic nanoparticle samples are mounted in the single solenoid coil or the two solenoid coils so that the strength of the magnetic field matches a preset target value,
- wherein the one or more magnetic nanoparticle samples are detachably mounted in respective sample mounting holes of an acrylic structure provided in the solenoid coils, and
- wherein the power supply unit is configured to, when the preset target location is in a two-dimensional (2D) space, apply the current to the single solenoid coil, and when the preset target location is in a three-dimensional (3D) space, apply the current to the two solenoid coils.
A method for controlling a magnetic field, comprising:
- applying current to one or more of a single solenoid coil for generating a magnetic field in a direction of a Z axis and multiple drive coils provided at preset intervals on a circumference of a concentric circle around one point on the Z axis;
- measuring a strength of a magnetic field at a target location at which the magnetic field is to be generated, using a measurement sensor that is movable on an X axis and a Y axis;
- and
- controlling the strength of the magnetic field by adjusting current to be applied to the multiple drive coils so that the strength of the magnetic field matches a preset target value.
Dependencies are inferred from the claim text.