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  Mechanics of active surfaces

Salbreux, G., & Jülicher, F. (2017). Mechanics of active surfaces. Physical Review E, 96(3): 032404. doi:10.1103/PhysRevE.96.032404.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002E-2CA9-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-9CEC-6
Genre: Journal Article

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 Creators:
Salbreux, Guillaume1, Author              
Jülicher, Frank1, Author              
Affiliations:
1Max Planck Institute for the Physics of Complex Systems, Max Planck Society, ou_2117288              

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 MPIPKS: Living matter
 Abstract: We derive a fully covariant theory of the mechanics of active surfaces. This theory provides a framework for the study of active biological or chemical processes at surfaces, such as the cell cortex, the mechanics of epithelial tissues, or reconstituted active systems on surfaces. We introduce forces and torques acting on a surface, and derive the associated force balance conditions. We show that surfaces with in-plane rotational symmetry can have broken up-down, chiral, or planar-chiral symmetry. We discuss the rate of entropy production in the surface and write linear constitutive relations that satisfy the Onsager relations. We show that the bending modulus, the spontaneous curvature, and the surface tension of a passive surface are renormalized by active terms. Finally, we identify active terms which are not found in a passive theory and discuss examples of shape instabilities that are related to active processes in the surface.

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Language(s): eng - English
 Dates: 2017-09-062017-09-06
 Publication Status: Published in print
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 Table of Contents: -
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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: 96 (3) Sequence Number: 032404 Start / End Page: - Identifier: ISSN: 1539-3755
CoNE: https://pure.mpg.de/cone/journals/resource/954925225012