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Updated: May 20, 2026
13:29
Electric and Magnetic Field Devices for Stimulation of Biological Tissues
Published on: May 15, 2021
Note: design of a novel rotating magnetic field device
F A Godínez1, O Chávez, R Zenit
1Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, México D. F. 04510, México.
The Review of Scientific Instruments
|July 5, 2012
Summary
A new device creates a uniform rotating magnetic field using a Helmholtz coil and a motor. This apparatus is effective for experiments, including those with magnetic swimmers.
Area of Science:
- Physics
- Engineering
- Materials Science
Background:
- Controlled magnetic fields are essential for various scientific and engineering applications.
- Existing methods for generating rotating magnetic fields can be complex or limited in uniformity.
Purpose of the Study:
- To design, construct, and test a novel device for producing a uniform rotating magnetic field.
- To evaluate the device's performance and stability for experimental use.
Main Methods:
- A Helmholtz coil pair was mechanically coupled to a DC electric motor with controlled angular velocity.
- The system utilized brushes to maintain coil energization during rotation.
- Magnetic field uniformity and system vibrations were measured at various rotation frequencies.
Main Results:
- The device generated a uniform magnetic field (approximately 5.8 mT) within a 100 mm workspace along the rotation axis.
- The system exhibited minimal mechanical vibrations below rotation frequencies of 10 Hz.
- Successful performance was demonstrated through experiments with magnetic swimmers.
Conclusions:
- The developed device provides a stable and uniform rotating magnetic field suitable for experimental applications.
- The apparatus is a viable tool for research involving magnetic swimmers and similar systems.
- Further research can explore applications in areas requiring controlled dynamic magnetic environments.
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