Pose control of the chain composed of magnetic particles using external uniform and gradient magnetic fields

  • J. F. ZhouEmail author
  • C. L. Shao
  • B. Q. Gu
Research Paper


Magnetic particles (MPs) are known to respond to a magnetic field and can be moved by magnetic force, which make them good carriers in bioengineering and pharmaceutical engineering. In this paper, a pose control method for the straight chain composed of MPs is proposed, and the chain with one pose can be moved to another position with another pose using alternately employed uniform and gradient magnetic fields. Based on computer simulations, it is revealed that in the uniform magnetic field, the MPs form a straight chain with the same separation space along the field lines, and once the uniform magnetic field rotates, the chain also rotates with the field. In the gradient magnetic field, the MPs move toward the higher field so that the translation of the chain can be realized. The simulation results indicate that while the uniform magnetic field is rotating, there exists certain hysteresis between the chain and the field, and the chain is not straight anymore. So the uniform magnetic field should rest at the target angle for a period to make the chain fully relax to be straight. For nanoMP, its magnetic moment directly determines the gradient magnetic force which is much smaller than the dipole–dipole force among MPs. Therefore, the translation of the chain is much more time-consuming than rotation. To enlarge the translational velocity, it is suggested to increase the size of MPs or the magnetic field gradient.


Magnetic particle Pose control Magnetic nanomaterials Modeling and simulation 



This work is supported by the National Natural Science Foundation of China (51205184 and 51306087) and the Project of Jiangsu provincial Six Talent Peaks (ZBZZ-014).


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Copyright information

© Springer Science+Business Media Dordrecht 2015

Authors and Affiliations

  1. 1.School of Mechanical and Power EngineeringNanjing Tech UniversityNanjingPeople’s Republic of China

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