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
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Recent innovations in surface topography
TL;DR: This review aims to provide a comprehensive understanding and practical guidance on the modern use of micro and nano-topography to control water, adhesion, wettability, control of biological adhesion including implants, cell culture and biofouling and directional fluid transport.
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Research progress on eco-friendly superhydrophobic materials in environment, energy and biology.
TL;DR: In this article , a review of bio-inspired eco-friendly superhydrophobic materials (EFSMs) is presented, focusing on the applications of EFSMs in the fields of environment (self-cleaning, wastewater purification, and membrane distillation), energy (solar evaporation, heat accumulation, and batteries), and biology (biosensors, biomedicine, antibacterial, and food packaging).
Journal ArticleDOI
Controlling the movement of water droplets with micro- and hierarchical micro/nanostructures
TL;DR: In this article, anisotropic surfaces with micropillar- or micro-nanobump structures were fabricated on PP by injection molding and the behavior of water on the surfaces was characterized by measuring the dynamic contact angles and sliding angles parallel and perpendicular to the zones.
Journal ArticleDOI
Biomimetic Hydrophilic–Hydrophobic Hybrid Polymer-structured Surfaces with Superhydrophobicity and Strong Water Microdroplet Adhesion
TL;DR: In this paper, the authors demonstrate a facile method to fabricate superhydrophobic surfaces that strongly absorb water droplets, even when the surfaces are inverted, mimicking the function of rose petals.
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.