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arXiv 0709.2956cond-mat.softcond-mat.mtrl-sci
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波纹相存在下混合脂膜的相行为

The Phase Behavior of Mixed Lipid Membranes in Presence of the Rippled Phase

N. Shimokawa, S. Komura, D. Andelman

摘要:

我们提出了一个模型描述液-固相共存的混合脂膜,包括明确的波纹相的发生。对于单组分膜,我们采用了以前的模型,其中膜厚度被用作序参量参数。作为温度的函数,该模型适当地考虑了三种可能的膜相:固体,液体和波纹相的相行为。我们的主要目的是探索扩展该模型的二元脂质混合物,考虑组成依赖的重要模型参数。所得到的相图显示各种液体,固体和波纹相共存区,并在定量协议与实验的一些特定的脂质混合物。

英文摘要:

We propose a model describing liquid-solid phase coexistence in mixed lipid membranes by including explicitly the occurrence of a rippled phase. For a single component membrane, we employ a previous model in which the membrane thickness is used as an order parameter. As function of temperature, this model properly accounts for the phase behavior of the three possible membrane phases: solid, liquid and the rippled phase. Our primary aim is to explore extensions of this model to binary lipid mixtures by considering the composition dependence of important model parameters. The obtained phase diagrams show various liquid, solid and rippled phase coexistence regions, and are in quantitative agreement with the experimental ones for some specific lipid mixtures.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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