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首页> 外文会议>Conference on nanophotonics and microano optics >Brilliant and tunable color by changing pore diameter of metal-coated porous anodic alumina
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Brilliant and tunable color by changing pore diameter of metal-coated porous anodic alumina

机译：通过改变金属涂层的多孔阳极氧化铝的孔径来获得绚丽的可调色

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摘要

Porous anodic alumina (PAA), with highly ordered microstructures, has attracted much attention due to some unique physical and optical characteristics. In recent years, PAA is also used to obtain different colors by methods such as growing nanowires, tuning pore depth, or sputtering metal on PAA surface. In this paper, we report a simple and precisely controllable method to tune color by changing the pore diameter of PAA. In order to obtain PPA with different pore diameter, we first prepare the PPA membrane by two step anodization of high purity aluminium foil in acidic solutions and then immerse the fabricated PPA membrane into phosphoric acid to enlarge pore diameter. The different pore diameters of PAA are controlled by immersed time in phosphoric acid. After sputtering metal on surface of PAA, the brilliant color can be seen on the surface of PAA. Different colors of PAA film with metal-coated are obtained using this method and colorful patterns are successfully fabricated. The physical model of the PAA is constructed and the mechanism of tuning color is analyzed. It is concluded that the color can be tuned by changing pore diameter of the PAA membrane. This method will be of potential use in decoration, color displays and anti-counterfeiting technology.
机译：具有高度有序的微观结构的多孔阳极氧化铝（PAA）由于一些独特的物理和光学特性而引起了很多关注。近年来，PAA还用于通过诸如生长纳米线，调整孔深度或PAA表面上的溅射金属等方法获得不同的颜色。在本文中，我们通过改变PAA的孔径来报告一种简单且精确可控的方法来调整颜色。为了获得具有不同孔径的PPA，首先通过酸性溶液中的高纯度铝箔的两步阳极氧化制备PPA膜，然后将制造的PPA膜浸入磷酸中以扩大孔径。 PAA的不同孔径直径由浸入磷酸中的浸渍时间来控制。在PAA表面上溅射金属后，可以在PAA的表面上看到辉煌的颜色。使用该方法获得具有金属涂层的PAA膜的不同颜色，并成功制造了彩色图案。构建PAA的物理模型，分析了调谐颜色的机制。结论是通过改变Paa膜的孔径可以调节颜色。该方法将具有潜在的装饰，彩色显示和防伪技术。

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