Metal pumps liquid uphill

被引：137

作者：

Vorobyev, A. Y. ^{[1
]}

Guo, Chunlei ^{[1
]}

机构：

[1] Univ Rochester, Inst Opt, Rochester, NY 14627 USA

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 22期

基金：

美国国家科学基金会;

关键词：

laser beam effects; platinum; surface structure; surface treatment; wetting; WETTABILITY; INSTABILITIES; SURFACES; FLOW;

D O I：

10.1063/1.3117237

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The behavior of liquids on a solid surface is determined by the surface wettability. In this work, by structuring metal surfaces with high-intensity femtosecond laser pulses, we engineer a unique surface pattern that dramatically modifies surface wetting properties. In a gravity-defying way, the treated metal surfaces make liquids sprint vertically uphill at an unprecedented speed of 1 cm/s. Furthermore, the surface structures we create here rapidly transport a significant amount of liquid against gravitation to an elevated point above the reservoir level, thus bringing this effect to potential real-life applications.

引用

页数：3

共 20 条

[1] Superhydrophobic surfaces prepared by microstructuring of silicon using a femtosecond laser [J].