流体膜中张力和面积膨胀模量的重整化
Renormalization of the tension and area expansion modulus in fluid membranes.
作者信息
Marsh D
机构信息
Abteilung Spektroskopie, Max-Planck-Institut für biophysikalische Chemie, Göttingen, Germany.
出版信息
Biophys J. 1997 Aug;73(2):865-9. doi: 10.1016/S0006-3495(97)78119-0.
Abstract
Renormalization of the membrane tension and elastic area expansion modulus by thermally induced bending fluctuations is treated in terms of the formalism of Brochard, De Gennes, and Pfeuty (J. de Phys. (France). 37:1099-1104, 1976). The dependence of the renormalized tension on the bare membrane tension parallels the dependence on the fractional area extension of giant vesicles found experimentally by Evans and Rawicz (Physiol. Rev. Lett. 64:2094-2097, 1990), and suggests conditions for molecular dynamics simulations with membrane patches of limited size that might best represent the properties of macroscopic vesicles.
摘要
通过热致弯曲涨落对膜张力和弹性面积膨胀模量的重整化，是根据布罗沙尔、德热纳和弗厄蒂的形式理论（《法国物理杂志》。37:1099 - 1104, 1976）来处理的。重整化张力对裸膜张力的依赖性，与埃文斯和拉维茨通过实验发现的对巨型囊泡分数面积扩展的依赖性相似（《生理学评论快报》。64:2094 - 2097, 1990），并为使用有限大小的膜片进行分子动力学模拟提出了条件，这些模拟可能最能代表宏观囊泡的性质。
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