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Published March 19, 2020 | Version v1
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Topological structure and dynamics of three-dimensional active nematics

Creators

  • 1. Brandeis University
  • 2. Brown University
  • 3. University of California, Santa Barbara
  • 4. University of Chicago
  • 5. Eindhoven University of Technology
  • 6. Max Planck Institute for Dynamics and Self Organization
  • 7. University of California, Merced

Description

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.

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Funding provided by: National Science Foundation
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100000001
Award Number: 1855914

Funding provided by: National Science Foundation
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100000001
Award Number: MCB090163

Funding provided by: National Science Foundation
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100000001
Award Number: 1420382

Funding provided by: National Science Foundation
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100000001
Award Number: 1437195

Funding provided by: National Institutes of Health
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100000002
Award Number: 5R00HD088708-05

Funding provided by: U.S. Department of Defense
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100000005
Award Number: W911NF-19-1-0268

Funding provided by: U.S. Department of Energy
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100000015
Award Number: DE-SC0019733

Funding provided by: Human Frontier Science Program
Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100000854
Award Number: LT001065/2017

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Additional details

Related works

Is cited by
10.1126/science.aaz4547 (DOI)