Zampetaki, A. ; Schmelcher, P. ; Löwen, H. ; Liebchen, B. (2019)
Taming polar active matter with moving substrates: Directed transport and counterpropagating macrobands.
In: New J. Phys., 21 (1)
doi: 10.1088/1367-2630/aaf776
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Following the goal of using active particles as targeted cargo carriers aimed, for example, to deliver drugs towards cancer cells, the quest for the control of individual active particles with external fields is among the most explored topics in active matter. Here, we provide a scheme allowing to control collective behaviour in active matter, focusing on the fluctuating band patterns naturally occurring e.g. in the Vicsek model. We show that exposing these patterns to a travelling wave potential tames them, yet in a remarkably nontrivial way: the bands, which initially pin to the potential and comove with it, upon subsequent collisions, self-organize into a macroband, featuring a predictable transport against the direction of motion of the travelling potential. Our results provide a route to simultaneously control transport and structure, i.e. micro- versus macrophase separation, in polar active matter.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2019 |
| Autor(en): | Zampetaki, A. ; Schmelcher, P. ; Löwen, H. ; Liebchen, B. |
| Art des Eintrags: | Bibliographie |
| Titel: | Taming polar active matter with moving substrates: Directed transport and counterpropagating macrobands |
| Sprache: | Englisch |
| Publikationsjahr: | 25 Januar 2019 |
| Verlag: | IOP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | New J. Phys. |
| Jahrgang/Volume einer Zeitschrift: | 21 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1088/1367-2630/aaf776 |
| Kurzbeschreibung (Abstract): | Following the goal of using active particles as targeted cargo carriers aimed, for example, to deliver drugs towards cancer cells, the quest for the control of individual active particles with external fields is among the most explored topics in active matter. Here, we provide a scheme allowing to control collective behaviour in active matter, focusing on the fluctuating band patterns naturally occurring e.g. in the Vicsek model. We show that exposing these patterns to a travelling wave potential tames them, yet in a remarkably nontrivial way: the bands, which initially pin to the potential and comove with it, upon subsequent collisions, self-organize into a macroband, featuring a predictable transport against the direction of motion of the travelling potential. Our results provide a route to simultaneously control transport and structure, i.e. micro- versus macrophase separation, in polar active matter. |
| Freie Schlagworte: | Vicsek model,band formation,directed transport,microswimmers,moving substrate,pinned/sliding phase,polar active matter, publiziert |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Festkörperphysik (2021 umbenannt in Institut für Physik Kondensierter Materie (IPKM)) |
| Hinterlegungsdatum: | 27 Mai 2019 13:26 |
| Letzte Änderung: | 19 Aug 2020 10:36 |
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