非理想选择性膜和纳米通道附近的扩展空间电荷
Extended space charge near non-ideally selective membranes and nanochannels
摘要：
我们证明了选择性变化的作用，在非平衡扩展空间电荷的结构，使用一维解析和二维数值泊松-能斯特-普朗克模型的对称电解质的电扩散传输。这提供了对浅微-纳米通道界面装置的电阻-电压曲线中先前观察到的最大值背后的潜在机制的更深入理解[Schiffbauer、Liel、Leibowitz、Park和Yossifon，提交给Phys.Rev.E.]。目前的研究有助于建立参数之间的连接，如几何形状和纳米通道表面电荷和控制的选择性和电阻在过限电流制度。
英文摘要：
We demonstrate the role of selectivity variation in the structure of the non-equilibrium extended space-charge using 1D analytic and 2D numerical Poisson-Nernst-Planck models for the electro- diffusive transport of a symmetric electrolyte. This provides a deeper understanding of the underly- ing mechanism behind a previously-observed maximum in the resistance-voltage curve for a shallow micro-nanochannel interface device [Schiffbauer, Liel, Leibowitz, Park, and Yossifon, submitted to Phys. Rev. E.]. The current study helps to establish a connection between parameters such as the geometry and nanochannel surface-charge and the control of selectivity and resistance in the over-limiting current regime.
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