Confinement free energy of semiflexible polymers

Marjolein Dijkstra*, Daan Frenkel, Henk N W Lekkerkerker

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Using a novel scheme to compute the chemical potential of semiflexible polymers, we have measured the confinement free energy of a wormlike chain in a tube. We compare our result for the dependence of the free energy on the chain length, the persistence length and the diameter of the cylinder with the corresponding theoretical predictions based on the scaling theory of Odijk and the fluctuation theory of Helfrich. Our simulation data agree well with the exponents of the theoretically predicted power laws. We find evidence that, for long wavelengths, the mode damping assumption underlying Helfrich's theory is valid.

Original languageEnglish
Pages (from-to)374-393
Number of pages20
JournalPhysica. A, theoretical and statistical physics
Volume193
Issue number3-4
DOIs
Publication statusPublished - 1 Apr 1993

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