Realization of a motility-trap for active particles

Jahanshahi, Soudeh; Lozano, Celia; Liebchen, Benno; Löwen, Hartmut; Bechinger, Clemens

Realization of a motility-trap for active particles

Dateien

Jahanshahi_2-13ecjwgy7kft30.pdfGröße: 3.18 MBDownloads: 297

Datum

2020

Autor:innen

Jahanshahi, Soudeh

Lozano, Celia

Liebchen, Benno

Löwen, Hartmut

Bechinger, Clemens

Open Access-Veröffentlichung

Open Access Gold

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Communications Physics. Springer Nature. 2020, 3, 127. eISSN 2399-3650. Available under: doi: 10.1038/s42005-020-0393-4

Zusammenfassung

Trapping of atomic and mesoscopic particles with optical fields is a practical technique employed in many research disciplines. Developing similar trapping methods for self-propelled, i.e. active, particles is, however, challenging due to the typical anisotropic material composition of Janus-type active particles. This renders their trapping with magneto-optical fields to be difficult. Here we present the realization of a motility-trap for active particles, which only exploits their self-propulsion properties. By combining experiments, numerical simulations, and theory, we show that, under appropriate conditions, a force-free rotation of the self-propulsion direction towards the trap's center can be achieved, which results in an exponential localization of active particles. Because this trapping mechanism can be applied to any propulsion scheme, we expect such motility-tweezers to be relevant for fundamental studies of self-driven objects as well as for their applications as autonomous microrobots.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

JAHANSHAHI, Soudeh, Celia LOZANO, Benno LIEBCHEN, Hartmut LÖWEN, Clemens BECHINGER, 2020. Realization of a motility-trap for active particles. In: Communications Physics. Springer Nature. 2020, 3, 127. eISSN 2399-3650. Available under: doi: 10.1038/s42005-020-0393-4

BibTex

@article{Jahanshahi2020-12Reali-50433,
  year={2020},
  doi={10.1038/s42005-020-0393-4},
  title={Realization of a motility-trap for active particles},
  volume={3},
  journal={Communications Physics},
  author={Jahanshahi, Soudeh and Lozano, Celia and Liebchen, Benno and Löwen, Hartmut and Bechinger, Clemens},
  note={Article Number: 127}
}

RDF

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