Brückner Jean-Baptiste, Le Rouzo Judikaël, Escoubas Ludovic, Berginc Gérard, Calvo-Perez Olivier, Vukadinovic Nicolas, Flory François
Aix-Marseille Université, Institut Matériaux Microélectronique Nanosciences de Provence - IM2NP, CNRS-UMR 6242, Domaine Universitaire de Saint-Jérôme, Service 231, 13397 Marseille Cedex 20, France.
Opt Express. 2013 Jul 15;21(14):16992-7006. doi: 10.1364/OE.21.016992.
We propose two distinctive designs of metamaterials demonstrating filtering functions in the visible and near infrared region. Since the emissivity is related to the absorption of a material, these filters would then offer a high emissivity in the visible and near infrared, and a low one beyond those wavelengths. Usually, such a system find their applications in the thermo-photovoltaics field as it can find as well a particular interest in optoelectronics, especially for optical detection. Numerical analysis has been performed on common metamaterial designs: a perforated metallic plate and a metallic cross grating. Through all these structures, we have demonstrated the various physical phenomena contributing to a reduction in the reflectivity in the optical and near infrared region. By showing realistic geometric parameters, the structures were not only designed to demonstrate an optical filtering function but were also meant to be feasible on large surfaces by lithographic methods such as micro contact printing or nano-imprint lithography.
我们提出了两种独特的超材料设计，它们在可见光和近红外区域展现出滤波功能。由于发射率与材料的吸收相关，这些滤波器在可见光和近红外区域将具有高发射率，而在这些波长之外则具有低发射率。通常，这样的系统在热光伏领域有应用，因为它在光电子学中也能引起特别的兴趣，尤其是用于光学检测。已对常见的超材料设计进行了数值分析：穿孔金属板和金属十字光栅。通过所有这些结构，我们展示了有助于降低光学和近红外区域反射率的各种物理现象。通过展示实际的几何参数，这些结构不仅被设计用于演示光学滤波功能，而且还旨在通过诸如微接触印刷或纳米压印光刻等光刻方法在大表面上实现。
