Probing the shear viscosity of an active nematic film

Pau Guillamat, Jordi Ignés-Mullol, Suraj Shankar, M Cristina Marchetti, Francesc Sagués

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

In vitro reconstituted active systems, such as the adenosine triphosphate (ATP)-driven microtubule bundle suspension developed by the Dogic group [T. Sanchez, D. T. Chen, S. J. DeCamp, M. Heymann, and Z. Dogic, Nature (London) 491, 431 (2012)10.1038/nature11591], provide a fertile testing ground for elucidating the phenomenology of active liquid crystalline states. Controlling such novel phases of matter crucially depends on our knowledge of their material and physical properties. In this Rapid Communication, we show that the shear viscosity of an active nematic film can be probed by varying its hydrodynamic coupling to a bounding oil layer. Using the motion of disclinations as intrinsic tracers of the flow field and a hydrodynamic model, we obtain an estimate for the shear viscosity of the nematic film. Knowing this now provides us with an additional handle for robust and precision tunable control of the emergent dynamics of active fluids.

Original languageEnglish (US)
Article number060602
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume94
Issue number6
DOIs
StatePublished - Dec 28 2016

Fingerprint

Shear Viscosity
hydrodynamics
viscosity
shear
Microtubules
adenosine triphosphate
Hydrodynamic Model
Adenosine
Phenomenology
Physical property
phenomenology
Material Properties
bundles
Flow Field
tracers
Hydrodynamics
Bundle
flow distribution
physical properties
oils

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics

Cite this

Guillamat, P., Ignés-Mullol, J., Shankar, S., Marchetti, M. C., & Sagués, F. (2016). Probing the shear viscosity of an active nematic film. Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 94(6), [060602]. https://doi.org/10.1103/PhysRevE.94.060602

Probing the shear viscosity of an active nematic film. / Guillamat, Pau; Ignés-Mullol, Jordi; Shankar, Suraj; Marchetti, M Cristina; Sagués, Francesc.

In: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, Vol. 94, No. 6, 060602, 28.12.2016.

Research output: Contribution to journalArticle

Guillamat, Pau ; Ignés-Mullol, Jordi ; Shankar, Suraj ; Marchetti, M Cristina ; Sagués, Francesc. / Probing the shear viscosity of an active nematic film. In: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics. 2016 ; Vol. 94, No. 6.
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