论文标题
相关无序光子系统的颜色 - 我们可以胜过大自然吗？
Colors from correlated disordered photonic systems -- can we outperform nature?
论文作者
论文摘要
从虹彩到哑光纹理，活生物体已经发展出广泛的外观。有趣的是，存在散射结构中的各向同性的角度独立结构颜色，仅在可见光谱的蓝色波长区域产生着色。因此，可能会怀疑这种观察是否是对自然界可用材料调色板的结构的限制。在这里，通过利用数值建模，我们讨论了各向同性结构颜色的起源，而无需限于特定的光散射状态。我们表明，在红色色调的各向同性短期订单结构中无法达到高色纯度和颜色饱和度。即使在先进的散射形态（例如核心壳颗粒或逆光子玻璃）的情况下，该结论也存在 - 解释了最近的实验发现，报告了此类系统的视觉外观表现较差。
Living organisms have developed a wide range of appearances from iridescent to matt textures. Interestingly, angular independent structural colors, where isotropy in the scattering structure is present, only produce coloration in the blue wavelength region of the visible spectrum. One might, therefore, wonder if such observation is a limitation of the architecture of the palette of materials available in nature. Here, by exploiting numerical modeling, we discuss the origin of isotropic structural colors without restriction to a specific light scattering regime. We show that high color purity and color saturation cannot be reached in isotropic short-range order structures for red hues. This conclusion holds even in the case of advanced scatterer morphologies, such as core-shell particles or inverse photonic glasses - explaining recent experimental findings reporting very poor performances of visual appearance for such systems.
