双固定电荷膜。低频介电色散。
The double fixed charge membrane. Low frequency dielectric dispersion.
作者信息
Coster H G
出版信息
Biophys J. 1973 Feb;13(2):118-32. doi: 10.1016/S0006-3495(73)85974-0.
An analysis is made of the AC characteristics of a membrane consisting of two fixed charge regions of opposite sign, in contact. It is shown that the equivalent parallel capacitance and conductance of such a membrane undergo a strong dispersion at low frequencies. The dielectric dispersion is a result of polarization effects in the diffusion of coions in each of the two fixed charge lattices. This, at low frequencies, gives rise to a very large diffusion capacitance. The form of the dispersion characteristics is very similar to those observed for synthetic-fused anion-cation membranes and various cellular membranes.
对由两个带相反电荷的固定电荷区域接触形成的膜的交流特性进行了分析。结果表明，这种膜的等效并联电容和电导在低频下会发生强烈的色散。介电色散是两个固定电荷晶格中每种同离子扩散时极化效应的结果。在低频时，这会产生非常大的扩散电容。色散特性的形式与合成熔合阴阳离子膜和各种细胞膜所观察到的非常相似。
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