Rheology of active filament solutions

T. B. Liverpool, M. C. Marchetti

Research output: Contribution to journalArticlepeer-review

81 Scopus citations


We study the viscoelasticity of an active solution of polar biofilaments and motor proteins. Using a molecular model, we derive the constitutive equations for the stress tensor in the isotropic phase and in phases with liquid crystalline order. The stress relaxation in the various phases is discussed. Contractile activity is responsible for a spectacular difference in the viscoelastic properties on opposite sides of the order-disorder transition.

Original languageEnglish (US)
Article number268101
JournalPhysical Review Letters
Issue number26
StatePublished - 2006

ASJC Scopus subject areas

  • General Physics and Astronomy


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