Superhydrophobic metallic surfaces and their wetting properties

被引：38

作者：

Bormashenko, Edward ^{[1
]}

Stein, Tamir ^{[1
]}

Whyman, Gene ^{[1
]}

Pogreb, Roman ^{[1
]}

Sutovsky, Semion ^{[1
]}

Danoch, Yifat ^{[1
]}

Shoham, Yamit ^{[1
]}

Bormashenko, Yelena ^{[1
]}

Sorokov, Boris ^{[2
]}

Aurbach, Doron ^{[3
]}

机构：

[1] Ariel Univ, Ariel Univ Ctr Samaria, IL-40700 Ariel, Israel

[2] Thin Films Ltd, IL-36602 Nesher, Israel

[3] Bar Ilan Univ, Dept Chem, IL-52900 Ramat Gan, Israel

来源：

JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY | 2008年 / 22卷 / 3-4期

关键词：

superhydrophobicity; wetting of metals; hierarchical patterns; the Cassie-Baxter model;

D O I：

10.1163/156856108X295491

中图分类号：

TQ [化学工业];

学科分类号：

0817 [化学工程与技术];

摘要：

Two-scaled polymer patterns possessing high roughness are produced using the hot-embossing technique and coating with chromium. After covering the rough polymer surface with this metal, the resulting surface demonstrates pronounced hydrophobic properties, with water drops having apparent contact angles as high as 150 degrees. As revealed by SEM, the surface is patterned on two scales which is known to be an important condition for superhydrophobicity of inherently wettable surfaces. The modified Cassie-Baxter approach has been used for the present relief. The calculated values of the apparent contact angles agree with the observed ones. It is important to note that the apparent contact angles almost do not depend on the local contact angles. (c) Koninklijke Brill NV, Leiden, 2008

引用

页码：379 / 385

页数：7

共 27 条

[1]

Wetting of regularly structured gold surfaces [J].