- 标题
- 摘要
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- 实验方案
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On the propagation of Voigt waves in energetically active materials
摘要： If Voigt-wave propagation is possible in a dissipative anisotropic dielectric material characterised by the permittivity dyadic e, then it is also possible in the analogous energetically active material characterised by the permittivity dyadic e? , where e? is the hermitian conjugate of e. This symmetry follows directly from a theoretical analysis of the necessary and suf?cient conditions for Voigt-wave propagation in anisotropic materials. As a consequence of this symmetry, a porous dissipative material that exhibits Voigt-wave propagation can be used to construct a material that allows the propagation of Voigt waves with attendant linear gain in amplitude with propagation distance, by means of in?ltration with an electrically or optically activated dye, for example. This phenomenon is captured by the Bruggeman formalism for homogenised composite materials based on isotropic dielectric component materials that are randomly distributed as oriented spheroidal particles.
关键词： active materials,homogenised composite materials,Bruggeman formalism,anisotropic dielectric materials,Voigt-wave propagation
更新于2025-09-04 15:30:14
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European Microscopy Congress 2016: Proceedings || A micro-combinatorial TEM method for phase mapping of thin two-component films
摘要： The aim is to introduce a new method for the preparation and investigation of thin films of composite materials, specifically focusing on the synthesis and characterization of two-component thin films for optoelectronic applications. The study explores the potential of these materials in enhancing the performance of optoelectronic devices, such as solar cells and LEDs, by improving their efficiency and stability under various environmental conditions.
关键词： LEDs,optoelectronics,solar cells,composite materials,thin films
更新于2025-09-04 15:30:14
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Facile photodeposition synthesis of novel Ag/4-Br/Bi2O3 composite photocatalyst
摘要： A novel Ag/4-Br/Bi2O3 composite photocatalyst was prepared by the hydrothermal and photodeposition method, and characterized by XRD, SEM, TEM and UV–vis analysis, respectively. The results indicated that the nanoparticles of Ag were successfully deposited on the surface of 4-Br/Bi2O3 composite. The as-prepared sample of Ag/4-Br/Bi2O3 showed higher photocatalytic activity than that of pure Bi2O3 or 4-Br/Bi2O3 through photodegradation of methyl orange(MO) under visible light. The enhanced photocatalytic activity could be attributed to the expansion of photoresponse range and the acceleration of carriers transmit caused by loading of Ag nanoparticles. Additionally, a possible photocatalytic mechanism of the Ag/4-Br/Bi2O3 composite was put forward.
关键词： Semiconductors,Ag/4-Br/Bi2O3,Photocatalyst,Composite materials
更新于2025-09-04 15:30:14