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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.

Notes 

To join the split files:

$ cat FiniteDifferenceData.part.* > FiniteDifferenceData.part.gz &
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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)