Creation of a superhydrophobic surface from a sublimed smectic liquid crystal

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Dual-scale structures showing superhydrophobic characteristics have been fabricated using sublimable smectic liquid crystals (LCs). Here, toric focal conic domains (TFCDs) of smectic LCs were prepared on micron-sized square pillar patterns. And the layer by layer reconstruction of TFCDs under a thermal sublimation process was followed to form nano-scale hemi-cylinders. Based on this dual-scale roughness, the superhydrophobic surface was successfully created with a water contact angle (CA) of similar to 150 degrees and a low CA hysteresis of similar to 9 degrees. The resulting superhydrophobic surface is the first application using sublimable LCs, suggesting a new approach for potential applications in LC science and engineering.
Publisher
ROYAL SOC CHEMISTRY
Issue Date
2014
Language
English
Article Type
Article
Keywords

FABRICATION; COATINGS; WATER

Citation

RSC ADVANCES, v.4, no.51, pp.26946 - 26950

ISSN
2046-2069
DOI
10.1039/c4ra03005b
URI
http://hdl.handle.net/10203/189894
Appears in Collection
NT-Journal Papers(저널논문)
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