Ion transport in nanofluidic channels

被引：451

作者：

Daiguji, H ^{[1
]}

Yang, PD

Majumdar, A

机构：

[1] Univ Tokyo, Grad Sch Frontier Sci, Inst Environm Studies, Tokyo 1130033, Japan

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Chem, Div Mat Sci, Berkeley, CA 94720 USA

[3] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA

来源：

NANO LETTERS | 2004年 / 4卷 / 01期

关键词：

D O I：

10.1021/nl0348185

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Theoretical modeling of ionic distribution and transport in silica nanotubes, 30 nm in diameter and 5 mum long, suggest that when the diameter is smaller than the Debye length, a unipolar solution of counterions is created within the nanotube and the coions are electrostatically repelled. By locally modifying the surface charge density through a gate electrode, the ion concentration can be depleted under the gate and the ionic current can be significantly suppressed. It is proposed that this could form the basis of a unipolar ionic field-effect transistor.

引用

页码：137 / 142

页数：6

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