标题： 电子作为通过纳米通道离子传输的中间载流子 显示英文标题

标题： Electrons as intermediate charge carriers in ion transport through nanoscale channels

摘要： 纳米流体通道的离子电导率是其最基本属性之一，在实验中被系统地表征。尽管迄今为止大多数研究都集中在直流电导率上，但最近人们对交流电压下纳米通道的行为产生了浓厚兴趣。在这里，我们展示了在具有导电壁的纳米通道中，电子可以有助于通过通道传输离子电流。我们确定了一个临界频率和长度尺度，超过该值时，通道壁中的电子将成为主要载流子，从而导致电导率大幅增加。我们的发现为基于离子-电子耦合的纳米流体功能工程开辟了道路。 显示英文摘要

摘要： The ionic conductivity of a nanofluidic channel is one of its most basic properties, which is systematically characterized in experiments. While most studies to date have focused on the DC conductivity, there has recently been a surge of interest in the behavior of nanochannels under AC voltages. Here, we show that in nanochannels with electrically conducting walls, electrons can contribute to transporting ionic current through the channel. We identify a critical frequency and lengthscale above which electrons in the channel walls become the main charge carriers, resulting in a strongly increased conductivity. Our findings open the way to the engineering of nanofluidic functionalities based on ion-electron coupling.