Super-spreading on superamphiphilic micro-organized nanochannel anodic aluminum oxide surfaces for heat dissipation.
Super-spreading on superamphiphilic micro-organized nanochannel anodic aluminum oxide surfaces for heat dissipation.
复制标题
超两亲性微组织纳米通道阳极氧化铝表面的超铺展散热
DOI：
10.1016/j.isci.2021.102334
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发表时间：
2021-04-23
期刊：
影响因子：
5.8
通讯作者：
Jiang L
中科院分区：
文献类型：
--
作者：
Zhu Z;Chen Y;Xu Z;Yu Z;Luo X;Zhou J;Tian Y;Jiang L
受自然启发的超两亲表面由于其极端的亲液行为而引起了极大的关注。在此，通过一种简便的、可控温度变化的一步阳极氧化方法制备了具有持久超两亲性能的微组织纳米通道（Mo-Na）超两亲性阳极氧化铝（AAO）表面。对各种液体超两亲性Mo-Na AAO表面的动态润湿行为的分析表明，铺展因子与表面张力和液体极性呈负相关。对三相接触线的详细观察显示，超两亲性 Mo-Na AAO 表面上存在微米级毛细管膜，这是由毛细管力的水平分量产生的。利用超两亲特性，水滴可以在短时间内在Mo-Na AAO表面完全铺展，可用于高效散热。此外，具有Mo-Na结构的独特AAO表面也为未来基于AAO的复合材料器件的研究提供了有效的模板。微组织纳米通道超两亲AAO结构的发现一步阳极氧化法制备长效超两亲AAO表面基于超扩散行为的有效散热性能仿生学；材料性能；表面特性
Nature-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. 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 behaviors Biomimetics ; Materials Property ; Surface Property
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