Control over Janus micromotors by the strength of a magnetic field

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2013
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Baraban, Larysa
Schmidt, Oliver G.
Cuniberti, Gianaurelio
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Nanoscale. 2013, 5(4), pp. 1332-1336. ISSN 2040-3364. eISSN 2040-3372. Available under: doi: 10.1039/c2nr32662k
Zusammenfassung

For transportation of molecules or biological cells using artificial motors, the control over their motion, i.e. direction and speed of transfer, is important. Here, we demonstrate that modification of the velocity and orientation of a magnetic Janus particle can be efficiently controlled by tuning the strength of an applied homogeneous magnetic field. Interestingly, by keeping the same orientation of the magnetic field but changing its magnitude not only the velocity of capped particles can be altered but even their direction of motion can be reversed. We put forth a simple qualitative model, which allows us to explain this intriguing observation.

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ISO 690BARABAN, Larysa, Denis MAKAROV, Oliver G. SCHMIDT, Gianaurelio CUNIBERTI, Paul LEIDERER, Artur ERBE, 2013. Control over Janus micromotors by the strength of a magnetic field. In: Nanoscale. 2013, 5(4), pp. 1332-1336. ISSN 2040-3364. eISSN 2040-3372. Available under: doi: 10.1039/c2nr32662k
BibTex
@article{Baraban2013-02-21Contr-41823,
  year={2013},
  doi={10.1039/c2nr32662k},
  title={Control over Janus micromotors by the strength of a magnetic field},
  number={4},
  volume={5},
  issn={2040-3364},
  journal={Nanoscale},
  pages={1332--1336},
  author={Baraban, Larysa and Makarov, Denis and Schmidt, Oliver G. and Cuniberti, Gianaurelio and Leiderer, Paul and Erbe, Artur}
}
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