Fluctuation-induced attraction between adhesion sites of supported membranes

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21 Scopus citations

Abstract

We use scaling arguments and coarse-grained Monte Carlo simulations to study the fluctuation-mediated interactions between a pair of adhesion sites of a bilayer membrane and a supporting surface. We find that the potential of mean force is an infinitely long range attractive potential that grows logarithmically with the pair distance r: φ (r) / kB T=clnr, where the constant c=2 and c=1 for nonstressed and stressed membranes, respectively. When, in addition to excluded volume repulsion, the membrane also interacts with the underlying surface through a height-dependent attractive potential, the potential φ (r) is screened at large pair distances.

Original languageEnglish
Article number050902
JournalPhysical Review E
Volume81
Issue number5
DOIs
StatePublished - 21 May 2010

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics

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