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Light Scattering by Structurally Anisotropic Media: A Benchmark with Transparent Wood
Author(s) -
Vasileva Elena,
Chen Hui,
Li Yuanyuan,
Sychugov Ilya,
Yan Max,
Berglund Lars,
Popov Sergei
Publication year - 2018
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201800999
Subject(s) - scattering , materials science , light scattering , anisotropy , isotropy , optics , transmittance , characterization (materials science) , optoelectronics , physics , nanotechnology
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.