Ion transport in nanofluidic channels

被引：445
|
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
收藏
页码：137 / 142
页数：6
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