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The electric field strength in orifice-like nanopores of ultrathin membranes

机译:超薄膜的孔状纳米孔中的电场强度

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Here we show that the electric field inside an ultrathin membrane is weaker than conventional theory would predict, and that the reduced field is predictive of measured electroosmotic flow rates. Our theoretical analysis shows that the electric field inside a charged nanopore is affected by end effects and dependent on the Dukhin number Du when the pore length-to-diameter aspect ratio lambda is less than 80 for Du 1 or 300 for Du 1. The electric field follows an unconventional scaling law; it no longer scales uniformly with the thickness of membrane, but with the local value of lambda for each nanopore.
机译:在这里,我们表明,超薄膜内部的电场比传统理论所预测的要弱,并且减小的电场可以预测测得的电渗流率。我们的理论分析表明,当Du 1或Du 的孔长/直径纵横比λ小于80时,带电纳米孔内部的电场受末端效应的影响,并且取决于Dukhin数Du。 1.电场遵循非常规的定律;它不再随膜的厚度均匀缩放,而是随每个纳米孔的λ局部值变化。

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