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Design and Realization of a Novel Optically Disordered Material: A Demonstration of a Mie Glass

AutorMiranda-Muñoz, José M.; Lozano, Gabriel ; Míguez, Hernán
Fecha de publicación2017
EditorWiley-Blackwell
CitaciónAdvanced Optical Materials 5: 1700025 (2017)
ResumenHerein, a diffusive material presenting optical disorder is introduced, which represents an example of a Mie glass. Comprising spherical crystalline TiO nanoparticles randomly dispersed in a mesoporous TiO matrix, it is proved that the scattering of light in this inhomogeneous solid can be predicted in an unprecedented manner from single-particle considerations employing Mie theory. To that aim, a study of the dependence of the key parameters employed is performed to describe light propagation in random media, i.e., the scattering mean free path and the transport mean free path, as a function of the size and concentration of the spherical inclusions based on a comparison between experimental results and analytical calculations. It is also demonstrated that Mie glasses enable enhanced fluorescence intensity due to a combined absorptance enhancement of the excitation light combined with an improved outcoupling of the emitted light. The method offers the possibility to perform a deterministic design for the realization of a light diffuser with tailor-made scattering properties.
URIhttp://hdl.handle.net/10261/155990
DOI10.1002/adom.201700025
Identificadoresdoi: 10.1002/adom.201700025
issn: 2195-1071
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