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Title: Topological structure and dynamics of three-dimensional active nematics

Abstract

Topological structures are effective descriptors of the nonequilibrium dynamics of diverse many-body systems. For example, motile, point-like topological defects capture the salient features of two-dimensional active liquid crystals composed of energy-consuming anisotropic units. We dispersed force-generating microtubule bundles in a passive colloidal liquid crystal to form a three-dimensional active nematic. Light-sheet microscopy revealed the temporal evolution of the millimeter-scale structure of these active nematics with single-bundle resolution. The primary topological excitations are extended, charge-neutral disclination loops that undergo complex dynamics and recombination events. Our work suggests a framework for analyzing the nonequilibrium dynamics of bulk anisotropic systems as diverse as driven complex fluids, active metamaterials, biological tissues, and collections of robots or organisms.

Authors:
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Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1603221
Grant/Contract Number:  
[SC0019733]
Resource Type:
Published Article
Journal Name:
Science
Additional Journal Information:
[Journal Name: Science Journal Volume: 367 Journal Issue: 6482]; Journal ID: ISSN 0036-8075
Publisher:
American Association for the Advancement of Science (AAAS)
Country of Publication:
United States
Language:
English

Citation Formats

Duclos, Guillaume, Adkins, Raymond, Banerjee, Debarghya, Peterson, Matthew S. E., Varghese, Minu, Kolvin, Itamar, Baskaran, Arvind, Pelcovits, Robert A., Powers, Thomas R., Baskaran, Aparna, Toschi, Federico, Hagan, Michael F., Streichan, Sebastian J., Vitelli, Vincenzo, Beller, Daniel A., and Dogic, Zvonimir. Topological structure and dynamics of three-dimensional active nematics. United States: N. p., 2020. Web. doi:10.1126/science.aaz4547.
Duclos, Guillaume, Adkins, Raymond, Banerjee, Debarghya, Peterson, Matthew S. E., Varghese, Minu, Kolvin, Itamar, Baskaran, Arvind, Pelcovits, Robert A., Powers, Thomas R., Baskaran, Aparna, Toschi, Federico, Hagan, Michael F., Streichan, Sebastian J., Vitelli, Vincenzo, Beller, Daniel A., & Dogic, Zvonimir. Topological structure and dynamics of three-dimensional active nematics. United States. doi:10.1126/science.aaz4547.
Duclos, Guillaume, Adkins, Raymond, Banerjee, Debarghya, Peterson, Matthew S. E., Varghese, Minu, Kolvin, Itamar, Baskaran, Arvind, Pelcovits, Robert A., Powers, Thomas R., Baskaran, Aparna, Toschi, Federico, Hagan, Michael F., Streichan, Sebastian J., Vitelli, Vincenzo, Beller, Daniel A., and Dogic, Zvonimir. Thu . "Topological structure and dynamics of three-dimensional active nematics". United States. doi:10.1126/science.aaz4547.
@article{osti_1603221,
title = {Topological structure and dynamics of three-dimensional active nematics},
author = {Duclos, Guillaume and Adkins, Raymond and Banerjee, Debarghya and Peterson, Matthew S. E. and Varghese, Minu and Kolvin, Itamar and Baskaran, Arvind and Pelcovits, Robert A. and Powers, Thomas R. and Baskaran, Aparna and Toschi, Federico and Hagan, Michael F. and Streichan, Sebastian J. and Vitelli, Vincenzo and Beller, Daniel A. and Dogic, Zvonimir},
abstractNote = {Topological structures are effective descriptors of the nonequilibrium dynamics of diverse many-body systems. For example, motile, point-like topological defects capture the salient features of two-dimensional active liquid crystals composed of energy-consuming anisotropic units. We dispersed force-generating microtubule bundles in a passive colloidal liquid crystal to form a three-dimensional active nematic. Light-sheet microscopy revealed the temporal evolution of the millimeter-scale structure of these active nematics with single-bundle resolution. The primary topological excitations are extended, charge-neutral disclination loops that undergo complex dynamics and recombination events. Our work suggests a framework for analyzing the nonequilibrium dynamics of bulk anisotropic systems as diverse as driven complex fluids, active metamaterials, biological tissues, and collections of robots or organisms.},
doi = {10.1126/science.aaz4547},
journal = {Science},
number = [6482],
volume = [367],
place = {United States},
year = {2020},
month = {3}
}

Journal Article:
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DOI: 10.1126/science.aaz4547

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