文章基本信息

标题：Super-spreading on superamphiphilic micro-organized nanochannel anodic aluminum oxide surfaces for heat dissipation
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作者：Zhongpeng Zhu ; Yupeng Chen ; Zhe Xu 等
期刊名称：iScience
印刷版ISSN：2589-0042
出版年度：2021
卷号：24
期号：4
页码：1-18
DOI：10.1016/j.isci.2021.102334
语种：English
出版社：Elsevier
摘要：SummaryNature-inspired superamphiphilic surfaces have drawn tremendous attention owing to its extreme liquid-loving behaviors. Herein, a micro-organized nano-channel (Mo-Na) superamphiphilic anodic aluminum oxide (AAO) surface with long-lasting superamphiphilic property is prepared by a facile one-step anodization method with controllable temperature change. Analysis of dynamic wetting behaviors on superamphiphilic Mo-Na AAO surfaces for various liquids reveals that the spreading factor is in negative correlation with the surface tension and liquid polarity. Detailed observation of the three-phase contact line shows a micro-scale capillary film on superamphiphilic Mo-Na AAO surfaces, which results from the horizontal component of the capillary force. Taking advantage of the superamphiphilic property, water droplets can spread completely on these Mo-Na AAO surfaces within a short time, which can be applied for efficient heat dissipation. Moreover, the unique AAO surface with Mo-Na structures also offers an effective template for future efforts in AAO-based composite devices.Graphical abstractDisplay OmittedHighlights•Discovery of micro-organized nano-channel superamphiphilic AAO structures•One-step anodization method to prepared long-lasting superamphiphilic AAO surfaces•Effective heat dissipation property based on the super-spreading behaviorsBiomimetics ; Materials Property ; Surface Property