Active viscoelastic matter: From bacterial drag reduction to turbulent solids

E. J. Hemingway, A. Maitra, S. Banerjee, M Cristina Marchetti, S. Ramaswamy, S. M. Fielding, M. E. Cates

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

A paradigm for internally driven matter is the active nematic liquid crystal, whereby the equations of a conventional nematic are supplemented by a minimal active stress that violates time-reversal symmetry. In practice, active fluids may have not only liquid-crystalline but also viscoelastic polymer degrees of freedom. Here we explore the resulting interplay by coupling an active nematic to a minimal model of polymer rheology. We find that adding a polymer can greatly increase the complexity of spontaneous flow, but can also have calming effects, thereby increasing the net throughput of spontaneous flow along a pipe (a "drag-reduction" effect). Remarkably, active turbulence can also arise after switching on activity in a sufficiently soft elastomeric solid.

Original languageEnglish (US)
Article number098302
JournalPhysical Review Letters
Volume114
Issue number9
DOIs
StatePublished - Mar 5 2015

Fingerprint

drag reduction
Polymers
polymers
Liquid Crystals
Rheology
rheology
degrees of freedom
turbulence
liquid crystals
fluids
symmetry
liquids

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Medicine(all)

Cite this

Hemingway, E. J., Maitra, A., Banerjee, S., Marchetti, M. C., Ramaswamy, S., Fielding, S. M., & Cates, M. E. (2015). Active viscoelastic matter: From bacterial drag reduction to turbulent solids. Physical Review Letters, 114(9), [098302]. https://doi.org/10.1103/PhysRevLett.114.098302

Active viscoelastic matter : From bacterial drag reduction to turbulent solids. / Hemingway, E. J.; Maitra, A.; Banerjee, S.; Marchetti, M Cristina; Ramaswamy, S.; Fielding, S. M.; Cates, M. E.

In: Physical Review Letters, Vol. 114, No. 9, 098302, 05.03.2015.

Research output: Contribution to journalArticle

Hemingway, EJ, Maitra, A, Banerjee, S, Marchetti, MC, Ramaswamy, S, Fielding, SM & Cates, ME 2015, 'Active viscoelastic matter: From bacterial drag reduction to turbulent solids', Physical Review Letters, vol. 114, no. 9, 098302. https://doi.org/10.1103/PhysRevLett.114.098302
Hemingway EJ, Maitra A, Banerjee S, Marchetti MC, Ramaswamy S, Fielding SM et al. Active viscoelastic matter: From bacterial drag reduction to turbulent solids. Physical Review Letters. 2015 Mar 5;114(9). 098302. https://doi.org/10.1103/PhysRevLett.114.098302
Hemingway, E. J. ; Maitra, A. ; Banerjee, S. ; Marchetti, M Cristina ; Ramaswamy, S. ; Fielding, S. M. ; Cates, M. E. / Active viscoelastic matter : From bacterial drag reduction to turbulent solids. In: Physical Review Letters. 2015 ; Vol. 114, No. 9.
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