Melanin, a black component of human hair, plays an important role in bright structural colorations in nature. For example, the beautiful and highly visible colorations of peacock feathers are achieved by periodic structures formed by melanin granules that have light absorbing capabilities. In recent years, polydopamine, which is easily obtained by the self-oxidative polymerization of dopamine, has attracted attention as a mimic of natural melanin. This focus review provides an overview of our recent research on structural color materials created using polydopamine-based artificial melanin particles and research trends in this area. Melanin, a black component of human hair, plays an important role in bright structural colorations in nature. Polydopamine-based artificial melanin particles, inspired by natural melanin and its important role in structural coloration, were used to produce bright structural colors by controlling light reflection and absorption. A variety of structural coloration characteristics have become possible through our investigations of the assembly structure, composition, shape, and application of artificial melanin particles.

中文翻译：

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人造黑色素颗粒：仿生结构着色的新构建块

黑色素是人类头发的一种黑色成分，在自然界中明亮的结构着色中起着重要作用。例如，孔雀羽毛的美丽和高度可见的颜色是通过具有吸光能力的黑色素颗粒形成的周期性结构实现的。近年来，通过多巴胺的自氧化聚合很容易获得的聚多巴胺作为天然黑色素的模拟物引起了人们的关注。这篇重点综述概述了我们最近对使用基于聚多巴胺的人造黑色素颗粒创建的结构色材料的研究以及该领域的研究趋势。黑色素是人类头发的一种黑色成分，在自然界中明亮的结构着色中起着重要作用。基于聚多巴胺的人造黑色素颗粒，受到天然黑色素及其在结构着色中的重要作用的启发，被用来通过控制光反射和吸收来产生明亮的结构色。通过对人造黑色素颗粒的组装结构、组成、形状和应用的研究，各种结构着色特征已成为可能。