A superhydrophobic dual-scale engineered lotus leaf

被引：55

作者：

Kim, Donghyun ^{[1
]}

Kim, Joonwon ^{[1
]}

Park, Hyun C. ^{[1
]}

Lee, Kun-H ^{[2
]}

Hwang, Woonbong ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol, Dept Mech Engn, Pohang 790784, Kyungbuk, South Korea

[2] Pohang Univ Sci & Technol, Dept Chem Engn, Pohang 790784, Kyungbuk, South Korea

来源：

JOURNAL OF MICROMECHANICS AND MICROENGINEERING | 2008年 / 18卷 / 01期

关键词：

D O I：

10.1088/0960-1317/18/1/015019

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 [电气工程]; 0809 [电子科学与技术];

摘要：

A surface was created with the same superhydrophobic property as the lotus leaf (lotus effect) by dipping of sandblasted porous alumina into polytetrafluoroethylene (PTFE, Teflon (R): DuPont (TM)) solution. The fabricated engineered lotus leaf had PTFE dual-scale structures. This fabrication process has several advantages, including low fabrication cost, simplicity and easy coverage of a large area. The sandblasted porous alumina template was fabricated by sandblasting of an aluminum sheet and anodization in oxalic acid. To obtain PTFE dual-scale structures, PTFE replication based on the dipping method was used, with a 0.3 w% PTFE solution. To remove the aluminum and alumina layers, wet etching by chromic and phosphoric acid mixed solution and liquid HgCl2 solution was used. The fabricated surface has a superhydrophobic property whose apparent contact angle of the PTFE dual-scale structures was approximately 165 and sliding angle is less than 2.

引用

页数：5

共 47 条

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