Journal ArticleDOI
Directional adhesion of superhydrophobic butterfly wings.
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TLDR
Direction adhesion on the superhydrophobic wings of the butterfly is showed and it is believed that this finding will help the design of smart, fluid-controllable interfaces that may be applied in novel microfluidic devices and directional, easy-cleaning coatings.Abstract:
We showed directional adhesion on the superhydrophobic wings of the butterfly Morpho aega. A droplet easily rolls off the surface of the wings along the radial outward (RO) direction of the central axis of the body, but is pinned tightly against the RO direction. Interestingly, these two distinct states can be tuned by controlling the posture of the wings (downward or upward) and the direction of airflow across the surface (along or against the RO direction), respectively. Research indicated that these special abilities resulted from the direction-dependent arrangement of flexible nano-tips on ridging nano-stripes and micro-scales overlapped on the wings at the one-dimensional level, where two distinct contact modes of a droplet with orientation-tuneable microstructures occur and thus produce different adhesive forces. We believe that this finding will help the design of smart, fluid-controllable interfaces that may be applied in novel microfluidic devices and directional, easy-cleaning coatings.read more
Citations
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Fluid drag reduction and efficient self-cleaning with rice leaf and butterfly wing bioinspired surfaces
Gregory D. Bixler,Bharat Bhushan +1 more
TL;DR: An overview of rice leaf and butterfly wing fluid drag and self-cleaning studies and two other promising aquatic surfaces in nature known for such properties, including fish scales and shark skin are examined.
Journal ArticleDOI
Self-similarity of contact line depinning from textured surfaces
Adam T. Paxson,Kripa K. Varanasi +1 more
TL;DR: In this paper, the authors examined a superhydrophobic surface on which a drop's adhesion is governed by capillary bridges at the receding contact line and showed that the Gibbs criterion is satisfied at the micro-scale.
Journal ArticleDOI
Bioinspired Superwettability Electrospun Micro/Nanofibers and Their Applications
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Bioinspired Surfaces with Superwettability for Anti-Icing and Ice-Phobic Application: Concept, Mechanism, and Design
TL;DR: Recently published literature about the mechanism of ice prevention is reviewed, with a focus on the anti-icing and ice-phobic mechanisms, encompassing the behavior of condensate microdrops on the surface, wetting, ice nucleation, and freezing.
Journal ArticleDOI
Adhesion behaviors on superhydrophobic surfaces
TL;DR: This review is aimed at giving a brief and crucial overview of adhesion behaviors on superhydrophobic surfaces, including the behaviors of cells, bacteria, biomolecules and icing onsuperhydrophilic surfaces.
References
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Journal ArticleDOI
Super-hydrophobic surfaces: From natural to artificial
Lin Feng,Shuhong Li,Yingshun Li,Huanjun Li,Lingjuan Zhang,Jin Zhai,Yanlin Song,Biqian Liu,Lei Jiang,Daoben Zhu +9 more
TL;DR: In this article, a super-hydrophobic surface with both a large contact angle (CA) and a small sliding angle (α) has been constructed from carbon nanotubes.
Journal ArticleDOI
Bioinspired surfaces with special wettability
TL;DR: Recent progress in wettability on functional surfaces is reviewed through the cooperation between the chemical composition and the surface micro- and nanostructures, which may bring great advantages in a wide variety of applications in daily life, industry, and agriculture.
Journal ArticleDOI
Super-Water-Repellent Fractal Surfaces
TL;DR: In this article, the authors showed that fractal surfaces can be super water repellent (superwettable) when the surfaces are composed of hydrophobic (hydrophilic) materials.