Topology in Biology by Julia Yeomans

Topology in Biology by Julia Yeomans

International Centre for Theoretical Sciences via YouTube Direct link

Active turbulence

4 of 30

4 of 30

Active turbulence

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Topology in Biology by Julia Yeomans

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  1. 1 Stochastic Thermodynamics, Active Matter and Driven Systems
  2. 2 Topology in Biology
  3. 3 Active particles convert energy to motion Energy enters the system on a single particle level
  4. 4 Active turbulence
  5. 5 Active turbulence of cells?
  6. 6 Dense active matter and active turbulence
  7. 7 Liquid crystals
  8. 8 Continuum equations of liquid crystal hydrodynamics
  9. 9 Hydrodynamics of active systems
  10. 10 Continuum equations of active liquid crystal hydrodynamics
  11. 11 1. Active stress =active turbulence
  12. 12 Instabilities in active nematic
  13. 13 Active turbulence is characterized by
  14. 14 Active turbulence: topological defects are created and destroyed
  15. 15 Unidirectional Alignment of the Active Nematic
  16. 16 States of an Active Nematic in a Channel
  17. 17 Ceilidh Dance
  18. 18 Vortex lattice and active topological microfluidics
  19. 19 Transition to Turbulence
  20. 20 Vorticity distribution
  21. 21 Enstrophy kymograph
  22. 22 Directed percolation
  23. 23 Turbulent fraction as a function of activity
  24. 24 Confinement is a way of harnessing active energy
  25. 25 Cell division
  26. 26 2. Division acts as extensible stress
  27. 27 Flow field around +1/2 defect
  28. 28 Extrusion of dead cells - correlated to topological defects
  29. 29 Confinement by walls can lead to regular vortex lattices in active systems & topological microfluidics
  30. 30 Q&A

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