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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Tailoring the wettability of patterned silicon surfaces with dual-scale pillars: From hydrophilicity to superhydrophobicity
TL;DR: In this article, a method of combining reactive ion etching and catalyzed etching to prepare silicon surface with micro-nano dual-scale pillars was proposed to tailor the wettability of patterned silicon surfaces.
Journal ArticleDOI
Preparation and anti-icing properties of a superhydrophobic silicone coating on asphalt mixture
Chao Peng,Chao Peng,Chao Peng,Hao Zhang,Zhanping You,Fang Xu,Guosheng Jiang,Songtao Lv,Ran Zhang,Hao Yang +9 more
TL;DR: In this paper, a new method of preparing a super-hydrophobic silicone coating on asphalt pavement surfaces for the anti-icing purpose was proposed, in which an additive (layered double hydroxides, or LDHs) was initially modified by γ-methacryloxypropyltrimethoxysilane (KH550).
Journal ArticleDOI
Bioinspired Asymmetric-Anisotropic (Directional) Fog Harvesting Based on the Arid Climate Plant Eremopyrum orientale
Mehmet Gürsoy,M.T. Harris,A. Carletto,Ahmet Emre Yaprak,Mustafa Karaman,Jas Pal Singh Badyal +5 more
TL;DR: In this paper, an asymmetric-anisotropic (directional) fog collection behavior is observed for leaves of the arid climate plant species Eremopyrum orientale, underpinned by a hierarchical surface structure comprising macroscale grooves, microscale tilted cones (in the direction of water flow), and nanoscale platelets.
Journal ArticleDOI
Superhydrophobic alumina surface with high adhesive force and long-term stability
TL;DR: In this article, a novel alumina surface with both superhydrophobicity and strong adhesion to water is presented, which takes on the roughened and porous morphology with the hierarchical micro-and nano-structure.
Journal ArticleDOI
Directing the transportation of a water droplet on a patterned superhydrophobic surface
TL;DR: In this article, a ball-like water droplet on a superhydrophobic (SH) surface has been experimentally demonstrated, with a water contact angle of as high as 160° and a sliding angle close to 0°.
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.