Optical analysis on the Morpho butterfly’s in-plane randomness using three-dimensional FDTD simulations
Optical analysis on the Morpho butterfly’s in-plane randomness using three-dimensional FDTD simulations
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使用三维 FDTD 模拟对 Morpho 蝴蝶的面内随机性进行光学分析
DOI：
10.1117/12.2558469
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
A. Saito
中科院分区：
文献类型：
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作者：
K. Yamashita;Y. Kuwahara;A. Saito
在具有结构色的自然生物中，大闪蝶是最引人注目的物种之一，因为它的蓝色显示出对干扰的高反射率和低角度依赖性。这种独特颜色的起源被认为是一种特殊的三维纳米结构，具有有序和无序，阻止了彩虹色。更重要的是，尽管缺乏垂直随机性，人工Morpho-color已成功实现。因此，我们最近使用数值模拟研究了面内随机性的光学作用，并揭示了三维随机性可以由二维随机性代替。然而，没有明确讨论模拟方法的细节及其有效性。在本文中，我们报告的三维模拟方法分析的非周期性结构，如形态蝴蝶的光学特性。此外，还发现了光的非相干性对形态着色的影响。
Among the natural creatures that have structural colors, the Morpho butterfly is one of the most remarkable species because its blue color displays both a high reflectivity from interference and a low angular dependence. The origin of this unique coloration is thought to be a specific three-dimensional nanostructure with order and disorder that prevents the rainbow color. More importantly, the artificial Morpho-color has been successfully realized in spite of the lack of vertical randomness. Thus, we have recently studied the optical role of in-plane randomness using a numerical simulation, and revealed that the three-dimensional randomness can be replaced by a two-dimensional randomness. However, the details of the simulation methodology and its validity were not explicitly discussed. In this paper, we report the three-dimensional simulation method for analyzing the optical properties of non-periodic structures such as the Morpho butterfly. Moreover, the effect of light incoherence on the Morpho-coloration is evidently shown.