Viscoelastic response of a complex fluid at intermediate distances

Adar Sonn-Segev, Anne Bernheim-Groswasser, Haim Diamant, Yael Roichman

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


The viscoelastic response of complex fluids is length- and time-scale dependent, encoding information on intrinsic dynamic correlations and mesoscopic structure. We study the length scale above which bulk viscoelasticity sets in, and the material response that precedes it at shorter distances. We show that the crossover between these two regimes may appear at a surprisingly large distance. We generalize the framework of microrheology to include both regimes and apply it to F-actin networks, thereby extracting their dynamic correlation length from their bulk and local viscoelastic properties.

Original languageEnglish
Article number088301
JournalPhysical Review Letters
Issue number8
StatePublished - 25 Feb 2014

ASJC Scopus subject areas

  • General Physics and Astronomy


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