Steering of magnetic micro-swimmers

Yan Hom Li, He Ching Lin, Ching-Yao Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


We experimentally investigate the motion of micro-swimmers consisting of several magnetic particles with different sizes. Swimmers are firstly formed by a static unidirectional field, and then manipulated by an additional dynamical perpendicular field. It is known that such magnetic-particle swimmers (or chains) driven by an external field would oscillate with the orientation of the field but lagging behind by a certain phase angle. In this work, we demonstrate if a swimmer subjected to a strong oscillating field which results in an instantaneous phase lag greater than π/2, the swimmer can be steered perpendicularly to its original direction. Detailed swimming mechanism and trajectory are presented. By this innovative steering technology, orientation of a micro-swimmer can be effectively manipulated without a physical reconfiguration of the external field arrangement.

Original languageEnglish
Article number6559244
Pages (from-to)4120-4123
Number of pages4
JournalIEEE Transactions on Magnetics
Issue number7
StatePublished - 2013


  • Magnetic particles
  • Micro-swimmer
  • Oscillating field
  • Steering mechanism


Dive into the research topics of 'Steering of magnetic micro-swimmers'. Together they form a unique fingerprint.

Cite this