Estimation of the bending rigidity and spontaneous curvature of fluid membranes in simulations

Hayato Shiba, Hiroshi Noguchi

Research output: Contribution to journalArticlepeer-review

46 Citations (Scopus)

Abstract

Several numerical methods for measuring the bending rigidity and the spontaneous curvature of fluid membranes are studied using two types of meshless membrane models. The bending rigidity is estimated from the thermal undulations of planar and tubular membranes and the axial force of tubular membranes. We found a large dependence of its estimate value from the thermal undulation analysis on the upper-cutoff frequency qcut of the least-squares fit. The inverse power-spectrum fit with an extrapolation to qcut→0 yields the smallest estimation error among the investigated methods. The spontaneous curvature is estimated from the axial force of tubular membranes and the average curvature of bent membrane strips. The results of these methods show good agreement with each other.

Original languageEnglish
Article number031926
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume84
Issue number3
DOIs
Publication statusPublished - 2011 Sep 27

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Estimation of the bending rigidity and spontaneous curvature of fluid membranes in simulations'. Together they form a unique fingerprint.

Cite this