4.6 Article

Electromagnetic Manipulation System for Semi-Autonomous Control of Small-Scale Magnetic Objects With Sequential Programming

Journal

IEEE ACCESS
Volume 11, Issue -, Pages 35327-35335

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2023.3264464

Keywords

Magnetic fields; Magnetic flux; Magnetometers; Magnetic resonance imaging; Electromagnetics; Graphical user interfaces; Magnetic field measurement; Magnetic field control system; guidewire; microrobot; nanoparticles; sequential programming

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In this study, an electromagnetic coil system was developed for semi-autonomous manipulation of microrobots in three-dimensional space with sequential programming. The system consisted of electromagnetic coils, an electronic control unit, optical cameras, and a direct-manipulation graphical user interface (GUI). The system could produce a magnetic field of up to 18 mT and allowed for real-time input of the required fields and gradients via the GUI.
In this study, an electromagnetic coil system was developed for semi-autonomous manipulation of microrobots in three-dimensional (3D) space with sequential programming. Cylindrical-shaped cores were used for the electromagnetic coils; the coils were arranged in a hemispherical configuration to allow open access to the workspace for imaging tools. The system consisted of four main parts: the electromagnetic coils, an electronic control unit, optical cameras, and a direct-manipulation graphical user interface (GUI). The system was capable of producing a magnetic field of up to 18 mT with a maximum current of 8 A current. Using this system, magnetic force and torque can be applied for semi-autonomous manipulation of magnetic objects, with different time intervals, by instantly inputting the required fields and gradients via the GUI. Sequential programming of the magnetic field allowed for better controllability and enhanced the repeatability of the system. The versatility of the system was demonstrated by moving a magnetic guidewire, micromagnet, and nanoparticles to their intended targets to assess the potential application of the system in biomedical fields.

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