Electrohydraulic Power Conversion in Planar Nanochannels

被引：82

作者：

Bonthuis, Douwe Jan ^{[1
]}

Horinek, Dominik ^{[1
]}

Bocquet, Lyderic ^{[1
,2
]}

Netz, Roland R. ^{[1
]}

机构：

[1] Tech Univ Munich, Dept Phys, D-85748 Garching, Germany

[2] Univ Lyon 1, CNRS, Lab PMCN, UMR 5586, F-69622 Villeurbanne, France

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 14期

关键词：

WATER-SURFACE; LIQUID WATER; NEAT WATER; FLUID; MICROFLUIDICS; VISCOSITY; MOBILITY; STRESS; CHARGE; SCALE;

D O I：

10.1103/PhysRevLett.103.144503

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We explore mechanisms for flow generation in water-filled nanochannels, employing the coupling between translational and rotational momentum. Using a generalized Navier-Stokes equation that includes dipolar polarization and relaxation, we show that static electric fields do not induce fluid flow in the planar geometry, while rotating electric fields efficiently convert electric into hydraulic power on the nanoscale. We also perform extensive molecular dynamics simulations of water in nanochannels and find that erroneous force truncation can give rise to spurious flow effects for static electric fields.

引用

页数：4

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