Hydrophilic Dots on Hydrophobic Nanopatterned Surfaces as a Flexible Gas Barrier

被引：28

作者：

Choi, Jin Hwan ^{[1
]}

Kim, Young Min ^{[1
]}

Park, Young Wook ^{[1
]}

Park, Tae Hyun ^{[1
]}

Dong, Ki Young ^{[1
]}

Ju, Byeong Kwon ^{[1
]}

机构：

[1] Korea Univ, Coll Engn, Display & Nanosyst Lab, Seoul 136701, South Korea

来源：

LANGMUIR | 2009年 / 25卷 / 12期

关键词：

SUPERHYDROPHOBIC SURFACES; DESERT BEETLE; FABRICATION; WETTABILITY; TRANSITION; ROUTE; FILMS;

D O I：

10.1021/la804325x

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The present study demonstrates a transparent polymeric gas barrier film mimicking the Namib Desert beetle's back. SiO2 hydrophilic dots have been deposited on a nanopatterned hydrophobic surface. A nanopatterned surface was fabricated by UV-curable nanoimprinting techniques. The surface energies of the hydrophobic and hydrophilic domains were 7.29 and > 73.12 mN/m, respectively. The characteristics of water vapor transfer from hydrophobic to hydrophilic regions due to difference of the attractive force at interfaces are shown to yield the enhanced barrier performance according to the Ca degradation measurements. This strategy is suitable for organic electronics, solar cells, and plastic optics applications requiring moisture-free properties with high transmission.

引用

页码：7156 / 7160

页数：5

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