Magnetic Field Control via Nanoparticle Concentration
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Solution Overview
Problem
Current magnetic field control technologies require multiple coils and complex power supply systems, making it difficult and expensive to modify magnetic field strengths in specific areas, especially in 3D spaces, and often necessitate discarding or re-manufacturing equipment.
Innovation Solution
A method using magnetic nanoparticles applied to a single solenoid coil or two parallel solenoid coils, with a power supply and control unit to adjust current and nanoparticle concentration for precise magnetic field strength control in 2D or 3D spaces, allowing for efficient and cost-effective modification of magnetic fields.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple coils are used to control magnetic field strength in specific areas, then magnetic field control capability is improved, but device complexity and cost increase
Solution Approach 1:
The patent changes the physical state and concentration of magnetic nanoparticles to control magnetic field strength. By adjusting nanoparticle concentration in the fluid, the system achieves variable magnetic field control without adding more coils, directly resolving the contradiction between control capability and device complexity
Solution Approach 2:
The patent replaces the mechanical/electrical system of multiple coils with a magnetic system using nanoparticles. The magnetic nanoparticles respond to the external magnetic field generated by a single coil, substituting the need for multiple physical coils with a controllable magnetic particle suspension
2Manufacturing precision
If multiple coils are used to form magnetic fields in 2D or 3D space, then magnetic field distribution is improved, but ease of manufacture and modification deteriorates
Solution Approach 1:
The patent introduces a dynamic element by using a fluid suspension of magnetic nanoparticles that can be pumped and circulated. This allows the magnetic field properties to be dynamically adjusted by changing nanoparticle concentration or flow characteristics, making the system adaptable without physical reconfiguration of coils
Solution Approach 2:
By changing the concentration of magnetic nanoparticles in the fluid, the system can modify magnetic field strength and distribution characteristics without altering the coil structure itself, greatly improving ease of manufacture and modification
3Measurement precision
If magnetic field strength is increased in specific locations, then imaging capability is improved, but energy consumption and equipment complexity increase
Solution Approach 1:
The patent introduces magnetic nanoparticles as an intermediary between the single coil and the target imaging area. These nanoparticles concentrate and enhance the magnetic field effect in specific regions without requiring proportionally higher energy input from the power supply, improving imaging capability while managing energy consumption
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables flexible and cost-effective generation of desired magnetic field strengths in specific locations, reducing equipment needs and operational complexity, and allowing for active image acquisition in systems like NMR and EPRI.
Implementation Method 1
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
Implementation Method 2
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
Data Source
AI summary
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.