Evans E A, Parsegian V A
Proc Natl Acad Sci U S A. 1986 Oct;83(19):7132-6. doi: 10.1073/pnas.83.19.7132.
Beginning with the free energy potential for long-range interactions between parallel flat sheets and the mechanical energy of bending those sheets, we have derived an upper bound for repulsion enhanced by thermal undulations of sheets in a multilamellar array. Through a self-consistent (mean-field) potential, we cover the full range of layer separations from close-in to far-apart, where the enhanced repulsion approaches the weak steric interaction derived previously by Helfrich [Helfrich, W. (1978) Z. Naturforsch. 33a, 305-315]. We have examined the effect of the fluctuation-enhanced repulsion in experimental studies of osmotic (and mechanical) compression of multilamellar lipid arrays, mechanical compression of bilayers immobilized on mica substrates, and controlled adhesion of giant bilayer membrane vesicles.
从平行平板之间长程相互作用的自由能势以及这些平板弯曲的机械能出发，我们推导出了多层膜阵列中平板热起伏增强排斥力的上限。通过自洽（平均场）势，我们涵盖了从紧密到远离的层间距全范围，其中增强的排斥力趋近于Helfrich先前推导的弱空间相互作用[Helfrich, W. (1978) Z. Naturforsch. 33a, 305 - 315]。我们在多层脂质膜阵列的渗透（和机械）压缩、固定在云母基板上的双层膜的机械压缩以及巨型双层膜囊泡的可控黏附的实验研究中考察了涨落增强排斥力的影响。
