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Original Research ARTICLE Provisionally accepted The full-text will be published soon. Notify me

Front. Phys. | doi: 10.3389/fphy.2019.00165

Dynamics of ring disclinations driven by active nematic shells

 Jerome Hardouin1, 2,  Pau Guillamat3, Francesc Sagues1, 2 and  Jordi Ignes1, 2*
  • 1University of Barcelona, Spain
  • 2Instituto de Nanociencia y Nanotecnología, Universitat de Barcelona, Spain
  • 3Université de Genève, Switzerland

When dispersed in thermotropic nematic liquid crystal oils, surfactant-ladden aqueous droplets often lead to the formation of a equatorial ring disclination in the nearby nematic matrix as a result of a balance between elasticity and interfacial energy. In this experimental work, the aqueous phase contains an extract of cytoskeletal proteins that self-assemble into an active quasi-two-dimensional shell featuring self-sustained periodic flows. The ensuing hydrodynamic coupling drives the surrounding liquid crystal and triggers oscillations in the disclinations. We describe the dynamic modes of the disclinations under different driving conditions, and explore their pathway to collapse under flow conditions.

Keywords: Liquid Crystals, nematic emulsions, active nematics, Disclinations, Non equilibrium

Received: 17 Aug 2019; Accepted: 11 Oct 2019.

Copyright: © 2019 Hardouin, Guillamat, Sagues and Ignes. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Prof. Jordi Ignes, University of Barcelona, Barcelona, 08007, Catalonia, Spain,