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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Journal ArticleDOI
Rose-petal-inspired fabrication of conductive superhydrophobic/superoleophilic carbon with high adhesion to water from orange peels for efficient oil adsorption from oil-water emulsion
TL;DR: In this article , the rose-petal-inspired conversion of orange peels to conductive super-hydrophobic/superoleophilic carbon with high adhesion to water is implemented through a facile protocol without low surface energy material modification.
Utilizing laser interference lithography to fabricate hierarchical optical active nanostructures inspired by the blue
TL;DR: In this paper, a reective coating was added to the photoresist to create a second interference pattern in vertical direction by exploiting the back reection from the substrate, which exposes the lamella structure into the photosensitive polymer while the horizontal interference pattern determines the distance of the ridges.
Book ChapterDOI
Smart Polymers for Biomedical Applications
TL;DR: In this article , the authors describe the recent development of smart polymers in the biomedical fields, and describe the use of these polymers to achieve more sophisticated drug treatments or to replace tissues/organs to improve biological functions.
Journal ArticleDOI
Facile synthesis of a superhydrophobic surface with modified hollow silica nanoparticles
Wang Junyu,Guang-Gai Zhou,Wen-Hua Xu,Weiliang Liu,Xiaoxia Cai,Qinze Liu,Xin-Qiang Wang,Wu Yongzhong +7 more
TL;DR: In this article, a simple and effective method to fabricate superhydrophobic coatings by grafting polystyrene (PS) onto the vinyltriethoxysilane modified hollow silica nanoparticles (HSNs) using free radical polymerization was reported.
Journal ArticleDOI
A review on control of droplet motion based on wettability modulation: principles, design strategies, recent progress, and applications
TL;DR: In this paper , a review categorizes liquid droplet transport strategies based on wettability modulation into those involving (i) application of driving force to a droplet on non-sticking surfaces, (ii) formation of gradient surface chemistry/structure, and (iii) forming anisotropic surface chemistry /structure.
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.