Dielectric-induced counterion partitioning and its effect on membrane rigidity.
Dielectric-induced counterion partitioning and its effect on membrane rigidity.
复制标题
介电诱导抗衡离子分配及其对膜刚性的影响。
DOI：
10.1103/physreve.66.061502
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
Pincus,PhilipA
中科院分区：
文献类型：
--
作者：
Schmit,Jeremy;Menes,Rebecca;Pincus,PhilipA
We report on a nonthermal mechanism for counterion partitioning driven by dielectric contrasts in a charged system. This mechanism allows objects to remain charged even in very low dielectric mediums and at low temperatures, if a nearby high dielectric environment can host its counterions. This nonthermal counterion partitioning leads to an attractive counterion pressure that is usually much larger than the van der Waals forces. In the context of a lipid membrane, this partitioning will stiffen the membrane by∼ k B T.
