Mechanical properties and microdomain separation of fluid membranes with anchored polymers

Hao Wu, Hayato Shiba, Hiroshi Noguchi

研究成果: Article査読

6 被引用数 (Scopus)

抄録

The entropic effects of anchored polymers on biomembranes are studied using simulations of a meshless membrane model combined with anchored linear polymer chains. The bending rigidity and spontaneous curvature are investigated for anchored ideal and excluded-volume polymer chains. Our results are in good agreement with the previous theoretical predictions. It is found that the polymer reduces the line tension of membrane edges, as well as the interfacial line tension between membrane domains, leading to microdomain formation. Instead of the mixing of two phases as observed in typical binary fluids, densely anchored polymers stabilize small domains. A mean field theory is proposed for the edge line tension reduced by anchored ideal chains, which reproduces our simulation results well.

本文言語English
ページ(範囲)9907-9917
ページ数11
ジャーナルSoft Matter
9
41
DOI
出版ステータスPublished - 2013 11月 7
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 凝縮系物理学

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