Light Scattering by Structurally Anisotropic Media: A Benchmark with Transparent Wood,Advanced Optical Materials

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Light Scattering by Structurally Anisotropic Media: A Benchmark with Transparent Wood
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2018-10-21 , DOI: 10.1002/adom.201800999
Elena Vasileva ₁ , Hui Chen ₂ , Yuanyuan Li ₂ , Ilya Sychugov ₁ , Max Yan ₁ , Lars Berglund ₂ , Sergei Popov ₁

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Transparent wood (TW) is a biocomposite material with hierarchical structure, which exhibits high optical transmittance and anisotropic light scattering. Here, the relation between anisotropic scattering and the internal structure of transparent wood is experimentally studied and the dependence of scattering anisotropy on material thickness, which characterizes the fraction of ballistic photons in the propagating light, is shown. The limitations of the conventional haze, as it is implemented to isotropic materials, are discussed, and a modified characteristic parameter of light scattering—the degree of anisotropic scattering is defined. This parameter together with the transport mean free path value is more practical and convenient for characterization of the material scattering properties. It is believed that the generic routine described in this paper can be applied for scattering characterization and comparison of other TW materials of either different thickness, optical quality or based on various wood species.

中文翻译：

结构各向异性介质的光散射：透明木材的基准

透明木材（TW）是具有层次结构的生物复合材料，具有很高的透光率和各向异性的光散射。在此，通过实验研究了各向异性散射与透明木材内部结构之间的关系，并显示了散射各向异性与材料厚度的关系，材料厚度表征了传播光中弹道光子的比例。讨论了常规雾度在各向同性材料上的局限性，并定义了修正的光散射特征参数-各向异性散射的程度。该参数与传输平均自由程值一起用于表征材料散射特性更为实用和方便。

更新日期：2018-10-21

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