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  Curvature-controlled defect dynamics in active systems

Ehrig, S., Ferracci, J., Weinkamer, R., & Dunlop, J. W. C. (2017). Curvature-controlled defect dynamics in active systems. Physical Review E, 95(6): 062609. doi:10.1103/PhysRevE.95.062609.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-BB36-0 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-99B0-B
Genre: Journal Article

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 Creators:
Ehrig, Sebastian1, Author              
Ferracci, Jonathan, Author
Weinkamer, Richard2, Author              
Dunlop, John W. C.1, Author              
Affiliations:
1John Dunlop, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863291              
2Richard Weinkamer, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863295              

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 Abstract: We have studied the collective motion of polar active particles confined to ellipsoidal surfaces. The geometric constraints lead to the formation of vortices that encircle surface points of constant curvature (umbilics). We have found that collective motion patterns are particularly rich on ellipsoids, with four umbilics where vortices tend to be located near pairs of umbilical points to minimize their interaction energy. Our results provide a new perspective on the migration of living cells, which most likely use the information provided from the curved substrate geometry to guide their collective motion.

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 Dates: 2016-10-192017
 Publication Status: Published in print
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 Identifiers: arXiv: 1610.05987
URI: https://arxiv.org/abs/1610.05987
DOI: 10.1103/PhysRevE.95.062609
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Title: Physical Review E
  Other : Phys. Rev. E
Source Genre: Journal
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Publ. Info: Melville, NY : American Physical Society
Pages: - Volume / Issue: 95 (6) Sequence Number: 062609 Start / End Page: - Identifier: ISSN: 1539-3755