Nonaffinity and Fluid-Coupled Viscoelastic Plateau for Immersed Fiber Networks

David Head and Cornelis Storm
Phys. Rev. Lett. 123, 238005 – Published 3 December 2019
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Abstract

We employ a matrix-based solver for the linear rheology of fluid-immersed disordered spring networks to reveal four distinct dynamic response regimes. One regime—completely absent in the known vacuum response—exhibits coupled fluid flow and network deformation, with both components responding nonaffinely. This regime contains an additional plateau (peak) in the frequency-dependent storage (loss) modulus—features that vanish without full hydrodynamic interactions. The mechanical response of immersed networks such as biopolymers and hydrogels is thus richer than previously established and offers additional modalities for design and control through fluid interactions.

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  • Received 22 August 2019

DOI:https://doi.org/10.1103/PhysRevLett.123.238005

© 2019 American Physical Society

Physics Subject Headings (PhySH)

Polymers & Soft MatterFluid DynamicsCondensed Matter, Materials & Applied Physics

Authors & Affiliations

David Head1,* and Cornelis Storm2,3

  • 1School of Computing, University of Leeds, Leeds LS2 9JT, United Kingdom
  • 2Department of Applied Physics, Eindhoven University of Technology, 5612 AZ Eindhoven, The Netherlands
  • 3Institute for Complex Molecular Systems, Eindhoven University of Technology, 5612 AZ Eindhoven, The Netherlands

  • *d.head@leeds.ac.uk

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Issue

Vol. 123, Iss. 23 — 6 December 2019

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