Hybrid structures and optical effects in Morpho scales with thin and thick coatings using an atomic layer deposition method

Hybrid structures and optical effects in Morpho scales with thin and thick coatings using an atomic layer deposition method
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使用原子层沉积方法研究具有薄涂层和厚涂层的 Morpho 尺度的混合结构和光学效应

DOI:
10.1016/j.optcom.2012.11.034
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发表时间:
2013-03
影响因子:
2.4
通讯作者:
Dong, Biqin
Dong, Biqin
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Liu, Feng;Shi, Wangzhou;Hu, Xinhua;Dong, Biqin

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采用低温原子层沉积法在斑蝶体表鳞片和底鳞片表面分别沉积了薄、厚两层Al2O3涂层。通过光谱测量和电子显微镜,它揭示了薄涂层和厚涂层封装的混合结构的形态表现在不同的方式,从而区分颜色的变化,在覆盖和地面规模。理论分析表明,颜色的变化可以归因于自然发生的光子结构和涂层厚度的相关性。随着涂层厚度的连续增加,覆盖层和基底层中着色的不同结构来源导致不同的光学性能。提出的研究提供了一种交替的路线,以产生理想的纳米结构,如纳米线和人工光子器件,如太阳能吸收器,以及完整的生物模板的结构表征及其光学效应的间接分析。
Thin and thick Al2O3coatings are deposited onto the surfaces of the cover and ground scales in the butterfly Morpho menelaus by low-temperature atomic layer deposition method. By spectral measurements and electronic microscopy, it is revealed that the morphologies of the hybrid structures encapsulated with thin coatings and thick coatings behave in a different way and thus the distinguishing color changes in both cover and ground scales. Theoretical analyses show that the coloration change can be attributed to the correlations of the naturally occurring photonic structures and the coating thicknesses. The different structural origins of the coloration in cover scales and ground scales lead to different optical performances as the coating increases its thicknesses in succession. The study presented offers an alternating route to produce desirable nanostructures such as nanolines and artificial photonic devices such as solar absorbers, and also the intact biotemplates an indirect analysis of structural characterizations and their optical effects.
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