Experimental observation of nonlinear ionic transport at the nanometer scale

被引：55

作者：

Krapf, Diego ^{[1
]}

Quinn, Bernadette M. ^{[1
]}

Wu, Meng-Yue ^{[1
]}

Zandbergen, Henny W. ^{[1
]}

Dekker, Cees ^{[1
]}

Lemay, Serge G. ^{[1
]}

机构：

[1] Delft Univ Technol, Kavli Inst Nanosci, NL-2628 CJ Delft, Netherlands

来源：

NANO LETTERS | 2006年 / 6卷 / 11期

关键词：

D O I：

10.1021/nl0619453

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nanometer-sized electrodes are used to probe the transport of ions in liquid by monitoring heterogeneous electrochemical reactions. We observe pronounced nonlinearities of ion flux versus concentration when transport is localized within a region smaller than 10 nm. We show that these observations cannot be explained using conventional continuum, mean-field descriptions of ionic transport. The data indicate that these deviations are caused by the high flux of charged species that is achieved at nanometer-sized electrodes.

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收藏

页码：2531 / 2535

页数：5

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