A perfect absorber made of a graphene micro-ribbon metamaterial
A perfect absorber made of a graphene micro-ribbon metamaterial
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DOI：
10.1364/oe.20.028017
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发表时间：
2012-12-17
期刊：
影响因子：
3.8
通讯作者：
Lederer, Falk
中科院分区：
文献类型：
--
作者：
Alaee, Rasoul;Farhat, Mohamed;Lederer, Falk
基于超材料的完美吸收体有许多应用前景。完全吸收的特征在于透射和反射的完全抑制以及吸收性元原子对入射能量的完全耗散。特定的吸收光谱通常被分配给体相介质，并用作相应材料的特征。在这里，我们展示了如何使用石墨烯薄片作为完美吸收体的构建块。然后，吸收元原子仅由放置在离金属接地板适当距离处的分子单层组成。我们表明，这种设备的功能是直观和正确的解释的法布里-珀罗模型。(C)2012美国光学学会
Metamaterial-based perfect absorbers promise many applications. Perfect absorption is characterized by the complete suppression of transmission and reflection and complete dissipation of the incident energy by the absorptive meta-atoms. A certain absorption spectrum is usually assigned to a bulk medium and serves as a signature of the respective material. Here we show how to use graphene flakes as building blocks for perfect absorbers. Then, an absorbing meta-atom only consists of a molecular monolayer placed at an appropriate distance from a metallic ground plate. We show that the functionality of such device is intuitively and correctly explained by a Fabry-Perot model. (C) 2012 Optical Society of America