Macroscopic-wetting anisotropy on the line-patterned surface of fluoroalkylsilane monolayers

被引：230

作者：

Morita, M

Koga, T

Otsuka, H

Takahara, A ^{[1
]}

机构：

[1] Kyushu Univ, Grad Sch Engn, Dept Chem & Biochem, Higashi Ku, Fukuoka 8128581, Japan

[2] Daikin Ind Ltd, Div Chem, Fundamental Res Dept, Settsu, Osaka 5668585, Japan

[3] Kyushu Univ, Inst Mat Chem & Engn, Higashi Ku, Fukuoka 8128581, Japan

来源：

LANGMUIR | 2005年 / 21卷 / 03期

关键词：

D O I：

10.1021/la0485172

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Micropatterned fluoroalkylsilane monolayer surfaces with liquidphilic/liquidphobic area (line width 1-20 mum) were prepared with few defects by vacuum ultraviolet (VUV) photolithography. The anisotropic wetting of a macroscopic droplet with a 0.5-5 mm diameter on the micropatterned surfaces was investigated. The strong anisotropy of the contact angle and the sliding angle and droplet distortion for fluoroalkylsilane/ silanol patterned surfaces was attributed to the difference in the energy barrier of wetting between parallel and orthogonal lines. The wetting anisotropy decreased with decreases in the liquidphilic area. Fluoroalkylsilane/alkylsilane patterned surfaces with small differences in the surface free energies of the components showed anisotropic wetting only for the low-surface-tension liquids.

引用

页码：911 / 918

页数：8

共 36 条

[11] Patterning organic-inorganic thin-film transistors using microcontact printed templates [J].