外加电位作用下水溶液中的可逆孔门
Reversible Pore Gating in Aqueous Mixtures via External Potential
摘要：
我们研究理论上多孔膜在含水混合物。我们发现，大的膜孔可以可逆地门控从“关”（共溶剂丰富，离子和其他溶质的不良导体）到“开”（水丰富，良好的导体）状态的外部电位。用于切换的转变电压或电荷取决于膜的亲水性/疏水性、盐含量、盐离子的优先溶剂化和温度。这些参数还确定填充过渡是突然的还是渐进的。
英文摘要：
We examine theoretically porous membranes in aqueous mixtures. We show that large membrane pores can be reversibly gated from `off' (co-solvent-rich, poor conductor of ions and other solutes) to 'on' (water-rich, good conductor) states by an external potential. The transition voltage or charge for switching depends on the membrane hydrophilicity/hydrophobicity, the salt content, the preferential solvation of the salt ions, and the temperature. These parameters also determine whether the filling transition is abrupt or gradual.
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