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  Anisotropic Random Networks of Semiflexible Polymers

Benetatos, P., & Zippelius, A. (2007). Anisotropic Random Networks of Semiflexible Polymers. Physical Review Letters, 99: 198301. doi:10.1103/PhysRevLett.99.198301.

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 Creators:
Benetatos, Panayotis, Author
Zippelius, Annette1, Author           
Affiliations:
1Fellow Group Polymers, complex fluids and disordered systems, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063298              

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 Abstract: Motivated by the organization of cross-linked cytoskeletal biopolymers, we present a semimicroscopic replica field theory for the formation of anisotropic random networks of semiflexible polymers. The networks are formed by introducing random permanent cross-links which fix the orientations of the corresponding polymer segments to align with one another. Upon increasing the cross-link density, we obtain a continuous gelation transition from a fluid phase to a gel where a finite fraction of the system gets localized at random positions. For sufficiently stiff polymers, this positional localization is accompanied by a continuous isotropic-to-nematic (IN) transition occurring at the same cross-link density. As the polymer stiffness decreases, the IN transition becomes first order, shifts to a higher cross-link density, and is preceded by an amorphous solid where the average polymer orientations freeze in random directions.

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Language(s): eng - English
 Dates: 2007-11-09
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 346940
DOI: 10.1103/PhysRevLett.99.198301
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Title: Physical Review Letters
  Alternative Title : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 99 Sequence Number: 198301 Start / End Page: - Identifier: -