首页> 外文期刊>Zeitschrift fur Physik, B. Condensed Matter >Stiffening of fluid membranes and entropy loss of membrane closure: Two effects of thermal undulations
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Stiffening of fluid membranes and entropy loss of membrane closure: Two effects of thermal undulations

机译:流体膜的刚度和膜闭合的熵损失:热起伏的两种影响

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摘要

The problem of membrane softening by thermal undulations is revisited. In contrast to general belief, fluid membranes are predicted to be stiffened, not softened, by their undulations. Equal values of the effective bending rigidity are calculated from the interplay of local mean curvature modes (hats) on the basically flat membrane and from the coupling of spherical harmonic modes with spherical curvature. In addition, a conjecture is made on the entropy of membrane closure. It relies on a similarity of membrane closure to periodic boundary conditions.
机译:再次讨论了由热起伏引起的膜软化问题。与一般的看法相反,流体膜被预测会因其起伏而变硬而不是变软。有效弯曲刚度的相等值是根据基本平坦的膜片上的局部平​​均曲率模(帽)的相互作用以及球谐模态与球曲率的耦合来计算的。另外,对膜封闭的熵作出了推测。它依赖于膜封闭与周期性边界条件的相似性。

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