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Engineering of Diffuse Structural Colors
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DOI：10.1002/adom.202302165.png)
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摘要
En 中文
Nowadays, structural colors successfully replace pigment-based ones. Most of the newly proposed solutions rely on plasmonic systems, so speaking nanosized objects, exhibiting strongly size-dependent optical properties. As a consequence, the fabrication requires high-precision and time-consuming technologies. A concept dealing with sub-micronic surface features, easily reproducible on a large scale is proposed. The designed metasurface consists of randomly distributed holes serving both as cavity resonators and scatterers. The proposed solution grants an efficient control of the spatial distribution of diffuse light and offers a large palette of vibrant colors. The interferometric model and a two-layer angular spectrum method provide a solid description of the physical origin of the phenomenon, with a high degree of agreement between simulations and experimental data. Independent control of diffuse light color and spatial distribution is demonstrated. Such a control obtained for a large palette of vibrant colors, is achieved via randomly distributed holes of well-defined size and height serving both as scatterers and cavity resonators. Such metasurface while being compatible with large-scale manufacturing allows, for an effective combination of diffused and specular reflections as well.image
Keyword:
angular spectrum method
diffuse reflection
interferences
microstructuring
nanophotonics
nanostructuring
structural colors
期刊
IF:
7.2
论文数:
8.9K
被引数:
4.6W
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