Bright-white beetle scales optimise multiple scattering of light.

Bright-white beetle scales optimise multiple scattering of light.
复制标题

DOI:
10.1038/srep06075
复制
发表时间:
2014-08-15
期刊:
影响因子:
4.6
通讯作者:
Vignolini S
Vignolini S
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Burresi M;Cortese L;Pattelli L;Kolle M;Vukusic P;Wiersma DS;Steiner U;Vignolini S

文献摘要

参考文献

被引文献

相似文献

白度是由光的漫反射和宽带反射引起的,通常是通过随机结构介质中的光散射实现的。与由于相干散射引起的结构色相反,白色外观通常需要包括随机定位的高折射率散射中心的相对厚的系统。在这里,我们表明,异常明亮的白色外观的Cyphochilus和Lepidiota柱头甲虫来自一个显着优化的各向异性内规模几丁质网络,作为一个密集的散射介质。使用时间分辨的测量,我们表明,在甲虫的鳞片中传播的光经历了明显的多重散射,这与迄今为止报道的低折射率系统的最低传输平均自由程。我们的光传输研究揭示了高水平的优化,实现了高亮度白色在薄的低质量每单位面积各向异性无序纳米结构。
Whiteness arises from diffuse and broadband reflection of light typically achieved through optical scattering in randomly structured media. In contrast to structural colour due to coherent scattering, white appearance generally requires a relatively thick system comprising randomly positioned high refractive-index scattering centres. Here, we show that the exceptionally bright white appearance of Cyphochilus and Lepidiota stigma beetles arises from a remarkably optimised anisotropy of intra-scale chitin networks, which act as a dense scattering media. Using time-resolved measurements, we show that light propagating in the scales of the beetles undergoes pronounced multiple scattering that is associated with the lowest transport mean free path reported to date for low-refractive-index systems. Our light transport investigation unveil high level of optimisation that achieves high-brightness white in a thin low-mass-per-unit-area anisotropic disordered nanostructure.
DOI: 10.1103/physrevlett.112.143901
发表时间: 2014-04-07
影响因子: 8.6
作者:
Conley, Gaurasundar M.;Burresi, Matteo;Wiersma, Diederik S.
通讯作者: Wiersma, Diederik S.
DOI: 10.1103/physrevlett.98.218104
发表时间: 2007-05-25
影响因子: 8.6
作者:
Kienle, Alwin
通讯作者: Kienle, Alwin
DOI: 10.1038/35015073
发表时间: 2000-06-08
期刊: NATURE
影响因子: 64.8
作者:
Autumn, K;Liang, YA;Full, RJ
通讯作者: Full, RJ
DOI: 10.1016/0022-4073(96)00002-7
发表时间: 1996-05-01
影响因子: 2.3
作者:
Mishchenko, MI;Travis, LD;Mackowski, DW
通讯作者: Mackowski, DW
DOI: 10.1364/josaa.21.001430
发表时间: 2004-08-01
影响因子: 1.9
作者:
Elaloufi, R;Carminati, R;Greffet, JJ
通讯作者: Greffet, JJ