Bioinspired superhydrophobic surfaces, fabricated through simple and scalable roll-to-roll processing

A simple, scalable, non-lithographic, technique for fabricating durable superhydrophobic (SH) surfaces, based on the fingering instabilities associated with non-Newtonian flow and shear tearing, has been developed. The high viscosity of the nanotube/elastomer paste has been exploited for the fabrica...

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Published inScientific reports Vol. 5; no. 1; p. 15430
Main Authors Park, Sung-Hoon, Lee, Sangeui, Moreira, David, Bandaru, Prabhakar R., Han, InTaek, Yun, Dong-Jin
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 22.10.2015
Nature Publishing Group
Subjects
639/301/1023/1025
639/925/357/73
Humanities and Social Sciences
Hydrophobic surfaces
multidisciplinary
Science
Skin
Viscosity
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Summary:A simple, scalable, non-lithographic, technique for fabricating durable superhydrophobic (SH) surfaces, based on the fingering instabilities associated with non-Newtonian flow and shear tearing, has been developed. The high viscosity of the nanotube/elastomer paste has been exploited for the fabrication. The fabricated SH surfaces had the appearance of bristled shark skin and were robust with respect to mechanical forces. While flow instability is regarded as adverse to roll-coating processes for fabricating uniform films, we especially use the effect to create the SH surface. Along with their durability and self-cleaning capabilities, we have demonstrated drag reduction effects of the fabricated films through dynamic flow measurements.
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These authors contributed equally to this work.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep15430