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Helical flow states in active nematics

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journal contribution
posted on 21.09.2022, 13:26 authored by Ryan Keogh, Santhan Chandragiri, Benjamin Loewe, Tapio Ala-NissilaTapio Ala-Nissila, Sumesh P Thampi, Tyler N Shendruk
We show that confining extensile nematics in three-dimensional (3D) channels leads to the emergence of two self-organized flow states with nonzero helicity. The first is a pair of braided antiparallel streams - this double helix occurs when the activity is moderate, anchoring negligible, and reduced temperature high. The second consists of axially aligned counter-rotating vortices - this grinder train arises between spontaneous axial streaming and the vortex lattice. These two unanticipated helical flow states illustrate the potential of active fluids to break symmetries and form complex but organized spatiotemporal structures in 3D fluidic devices.

Funding

'Living' Colloidal Liquid Crystals

European Research Council

Find out more...

Department of Science and Technology, India, via Research Grant No. CRG/2018/000644

QFT Center of Excellence Program grant (No. 312298)

Academy of Finland PolyDyna (No. 307806)

History

School

  • Science

Department

  • Mathematical Sciences

Published in

Physical Review E

Volume

106

Issue

1

Publisher

American Physical Society (APS)

Version

AM (Accepted Manuscript)

Rights holder

© American Physical Society

Publisher statement

This paper was accepted for publication in the journal Physical Review E and the definitive published version is available at https://doi.org/10.1103/physreve.106.l012602

Acceptance date

09/06/2022

Publication date

2022-07-07

Copyright date

2022

ISSN

2470-0045

eISSN

2470-0053

Language

en

Depositor

Prof Tapio Ala-Nissila. Deposit date: 21 September 2022

Article number

L012602

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