Compressing a rigid filament: Buckling and cyclization

N. K. Lee, A. Johner, S. C. Hong

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

We study elastic properties of rigid filaments modeled as stiff chains shorter than their persistence length. By rigid filaments we mean that fluctuations around the optimal filament shape are weak and that low-order expansions (quadratic or quartic) in the deviation from the optimal shape are sufficient to describe them. Our main interest lies in the profiles of force vs. projected filament length, closure probability and weakly buckled states. Results may be relevant to experiments on self-assembled biological (microtubules, actin filaments) and synthetic (organo-gelators) filaments, carbon nanotubes and polymers grafted with strongly repelling side chains, some of which are discussed here.

Original languageEnglish
Pages (from-to)229-241
Number of pages13
JournalEuropean Physical Journal E
Volume24
Issue number3
DOIs
Publication statusPublished - 2007 Nov

Keywords

  • 82.37.Rs Single molecule manipulation of proteins and other biological molecules
  • 87.15.La Mechanical properties
  • 87.16.Ka Filaments, microtubules, their networks, and supramolecular assemblies

ASJC Scopus subject areas

  • Biotechnology
  • Biophysics
  • Chemistry(all)
  • Materials Science(all)
  • Surfaces and Interfaces

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