Water slip and friction at a solid surface

被引：16

作者：

Brigo, L. ^{[1
,2
]}

Natali, M. ^{[3
]}

Pierno, M. ^{[1
,2
]}

Mammano, F. ^{[1
,4
]}

Sada, C. ^{[1
,2
]}

Fois, G. ^{[1
,2
]}

Pozzato, A. ^{[1
,5
]}

dal Zilio, S. ^{[1
,5
]}

Tormen, M. ^{[5
]}

Mistura, G. ^{[1
,2
]}

机构：

[1] Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy

[2] Consorzio Nazl Interuniv Sci Fis Mat, I-00146 Rome, Italy

[3] CNR, ICIS, I-35127 Padua, Italy

[4] VIMM, I-35129 Padua, Italy

[5] CNR, TASC INFM, I-34012 Trieste, Italy

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2008年 / 20卷 / 35期

关键词：

D O I：

10.1088/0953-8984/20/35/354016

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A versatile micro- particle imaging velocimetry ( mu- PIV) recording system is described, which allows us to make fluid velocity measurements in a wide range of flow conditions both inside microchannels and at liquid - solid interfaces by using epifluorescence and total internal reflection fluorescence excitation. This set- up has been applied to study the slippage of water over flat surfaces characterized by different degrees of hydrophobicity and the effects that a grooved surface has on the fluid flow inside a microchannel. Preliminary measurements of the slip length of water past various flat surfaces show no significant dependence on the contact angle.

引用

页数：5

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