Facile and efficient fabrication of amorphous photonic crystals (APCs) with uniform and angle independent structural colors is highly desired due to their unique applications in non‐iridescent colors‐based displays, pigments, and sensors. Here, a solvent‐assisted colloidal assembly approach is reported to fabricate APCs with uniform and angle‐independent structural colors by the self‐assembly of polydopamine‐embedded silica particles in pentanol. The surface charge of the particle mediated by the polarity of solvent is demonstrated to be the key to control the particle arrangements and the angle dependency of the structural colors, which makes the fabrication more efficient, simple, and convenient compared to previous methods. Owing to the amorphous structures, the APCs show unique sensitivity to the variation of the refractive index contrast. Based on this unique sensitivity of APCs, an information storage‐recognition system is established by constructing different wettability between the information and background region. The information integrated with the color, the number, and the site of APCs of the system can be stored and recognized at dry and wetting state, respectively, and the switching of the storage‐recognition process is fully reversible. These findings provide new insights into the design, fabrication, and application of materials with non‐iridescent structural colors.

中文翻译：

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使用更少的极性溶剂以及基于可湿性的信息存储和识别，高效地制造非晶光子晶体

由于它们在基于非虹彩颜色的显示器，颜料和传感器中的独特应用，因此，人们迫切需要一种快速有效地制造具有均匀且与角度无关的结构颜色的非晶光子晶体（APC）。在此，据报道，通过溶剂辅助的胶体组装方法可通过在戊醇中自组装聚多巴胺嵌入的二氧化硅颗粒来制造具有均匀且与角度无关的结构颜色的APC。事实证明，由溶剂的极性介导的颗粒表面电荷是控制颗粒排列和结构颜色的角度依赖性的关键，与以前的方法相比，它使制造更加有效，简单和方便。由于无定形结构，APC对折射率对比度的变化显示出独特的敏感性。基于APC的这种独特敏感性，通过在信息和背景区域之间构建不同的可湿性来建立信息存储识别系统。可以在干燥和湿润状态下分别存储和识别与系统APC的颜色，数量和位置有关的信息，并且存储识别过程的切换是完全可逆的。这些发现为具有非虹彩结构颜色的材料的设计，制造和应用提供了新的见解。并且系统的APC的位置可以分别在干燥和湿润状态下进行存储和识别，并且存储识别过程的切换是完全可逆的。这些发现为具有非虹彩结构颜色的材料的设计，制造和应用提供了新的见解。并且系统的APC的位置可以分别在干燥和湿润状态下进行存储和识别，并且存储识别过程的切换是完全可逆的。这些发现为具有非虹彩结构颜色的材料的设计，制造和应用提供了新的见解。