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Hydrophilic Dots on Hydrophobic Nanopatterned Surfaces as a Flexible Gas Barrier

Authors
Choi, Jin HwanKim, Young MinPark, Young WookPark, Tae HyunDong, Ki YoungJu, Byeong Kwon
Issue Date
16-Jun-2009
Publisher
AMER CHEMICAL SOC
Keywords
Organic electronics; OLED Gas barrier
Citation
LANGMUIR, v.25, no.12, pp 7156 - 7160
Pages
5
Indexed
SCIE
SCOPUS
Journal Title
LANGMUIR
Volume
25
Number
12
Start Page
7156
End Page
7160
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/119821
DOI
10.1021/la804325x
ISSN
0743-7463
1520-5827
Abstract
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.
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