Measuring and modelling optical scattering and the colour quality of white pierid butterfly scales
Measuring and modelling optical scattering and the colour quality of white pierid butterfly scales
复制标题
DOI：
10.1364/oe.17.014729
复制
发表时间：
2009-08-17
期刊：
影响因子：
3.8
通讯作者：
Hallam, B.
中科院分区：
文献类型：
--
作者：
Luke, S. M.;Vukusic, P.;Hallam, B.
蝴蝶翅膀的颜色是由于光与翅膀两侧表面覆盖的鳞片的相互作用。鳞片中反射或散射光线的纳米结构，以及鳞片和翅膀基质中化学色素的吸收，共同创造了最终的颜色外观。我们比较了粉蝶的翅膀鳞片形态的粉蝶（小白色）从它的翅膀的反射光谱。它的翅膀鳞片含有一系列密集的蝶呤色素珠。珠阵列密度和翅膀反射率之间的正相关性，在波长处的色素不吸收，被确定和表征。然而，我们观察到，来自这些珠子的光散射并不能解释从机翼观察到的所有宽带光散射。鳞片结构的其余部分在实现高光散射方面起着重要作用。此外，结合蝴蝶尺度内的潜在散射和吸收机制，使我们能够使用CIELab颜色理论量化样品的光学特性。(C)2009年美国光学学会
Colouration in butterfly wings is due to the interaction of light with a covering of scales on both wing surfaces. A combination of nanostructure in the scales, which reflect or scatter light, and absorption from chemical pigments in the scales and wing substrate create the final colour appearance. We compared the wing scale morphology of the pierid butterfly Pieris rapae (Small White) to the reflectance spectra from its wings. Its wing scales contain a dense array of pterin pigment beads. A positive correlation between bead-array density and wing reflectance, at wavelengths where the pigment does not absorb, was identified and characterised. We observed, however, that light scatter from these beads does not account for all of the broadband light scatter observed from the wings. The rest of the scale structure plays an important role in achieving high light scatter. Furthermore, combining the underlying scattering and absorption mechanisms within the butterfly scales enabled us to quantify the optical characteristics of the samples using CIELab colour theory. (C) 2009 Optical Society of America