Role of surface charge on boundary slip in fluid flow

被引：38

作者：

Pan, Yunlu ^{[1
,2
]}

Bhushan, Bharat ^{[1
]}

机构：

[1] Ohio State Univ, Nanoprobe Lab Bio & Nanotechnol & Biomimet NLB2, 201 W 19th Ave, Columbus, OH 43210 USA

[2] Harbin Inst Technol, Sch Mechatron Engn, Harbin 150001, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2013年 / 392卷

关键词：

Surface charge; Electrostatic force; Boundary slip; Fluid drag; LIQUIDS;

D O I：

10.1016/j.jcis.2012.10.043

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

For a smooth hydrophobic surface, slip occurs during fluid flow close to the boundary, known as boundary slip which can reduce fluid drag. The surface charge present at the interface is believed to affect the boundary slip. In this paper, the effect of surface charge on the fluid flow on a hydrophobic surface is studied in both deionized (DI) water and saline. Positive and negative voltages are applied to the substrate to vary the surface charge density. The electrostatic force and slip lengths are measured with different applied electric field. Results are the subject of the paper. (c) 2012 Elsevier Inc. All rights reserved.

引用

页码：117 / 121

页数：5

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