Nearly Perfect Durable Superhydrophobic Surfaces Fabricated by a Simple One-Step Plasma Treatment

被引：88

作者：

Ryu, Jeongeun ^{[1
]}

Kim, Kiwoong ^{[1
]}

Park, JooYoung ^{[1
]}

Hwang, Bae Geun ^{[1
]}

Ko, YoungChul ^{[2
]}

Kim, HyunJoo ^{[2
]}

Han, JeongSu ^{[2
]}

Seo, EungRyeol ^{[2
]}

Park, YongJong ^{[2
]}

Lee, Sang Joon ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol, Dept Mech Engn, Ctr Biofluid & Biomim Res, Pohang 790784, South Korea

[2] Samsung Elect, Digital Appliance Adv R&D Team, Suwon 443742, South Korea

来源：

SCIENTIFIC REPORTS | 2017年 / 7卷

基金：

新加坡国家研究基金会;

关键词：

DELAYED FROST GROWTH; HEAT-TRANSFER; CONDENSATION; SUPPRESSION; DURABILITY; COATINGS; FILMS;

D O I：

10.1038/s41598-017-02108-1

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Fabrication of superhydrophobic surfaces is an area of great interest because it can be applicable to various engineering fields. A simple, safe and inexpensive fabrication process is required to fabricate applicable superhydrophobic surfaces. In this study, we developed a facile fabrication method of nearly perfect superhydrophobic surfaces through plasma treatment with argon and oxygen gases. A polytetrafluoroethylene (PTFE) sheet was selected as a substrate material. We optimized the fabrication parameters to produce superhydrophobic surfaces of superior performance using the Taguchi method. The contact angle of the pristine PTFE surface is approximately 111.0 degrees +/- 2.4 degrees, with a sliding angle of 12.3 degrees +/- 6.4 degrees. After the plasma treatment, nano-sized spherical tips, which looked like crown-structures, were created. This PTFE sheet exhibits the maximum contact angle of 178.9 degrees, with a sliding angle less than 1 degrees. As a result, this superhydrophobic surface requires a small external force to detach water droplets dripped on the surface. The contact angle of the fabricated superhydrophobic surface is almost retained, even after performing an air-aging test for 80 days and a droplet impacting test for 6 h. This fabrication method can provide superb superhydrophobic surface using simple one-step plasma etching.

引用

页数：8

共 52 条

[51] Clustered Ribbed-Nanoneedle Structured Copper Surfaces with High-Efficiency Dropwise Condensation Heat Transfer Performance [J].