Hydrophilic dots on hydrophobic nanopatterned surfaces as a flexible gas barrier

Jin Hwan Choi; Young Min Kim; Young Wook Park; Tae Hyun Park; Ki Young Dong; Byeong Kwon Ju

doi:10.1021/la804325x

Hydrophilic dots on hydrophobic nanopatterned surfaces as a flexible gas barrier

Jin Hwan Choi, Young Min Kim, Young Wook Park, Tae Hyun Park, Ki Young Dong, Byeong Kwon Ju

School of Electrical Engineering

Research output: Contribution to journal › Article

27 Citations (Scopus)

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.

Original language	English
Pages (from-to)	7156-7160
Number of pages	5
Journal	Langmuir
Volume	25
Issue number	12
DOIs	https://doi.org/10.1021/la804325x
Publication status	Published - 2009 Jun 16

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

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10.1021/la804325x

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Cite this

Choi, J. H., Kim, Y. M., Park, Y. W., Park, T. H., Dong, K. Y., & Ju, B. K. (2009). Hydrophilic dots on hydrophobic nanopatterned surfaces as a flexible gas barrier. Langmuir, 25(12), 7156-7160. https://doi.org/10.1021/la804325x

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