Coupled Resonance Enhanced Modulation for a Graphene-Loaded Metamaterial Absorber

A graphene-loaded metamaterial absorber is investigated in the mid-infrared region. The light-graphene interaction is greatly enhanced by virtue of the coupled resonance through a cross-shaped slot. The absorption peaks show a significant blueshift with increasing Fermi level, enabling a wide range...

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Detalles Bibliográficos
Autores principales: Xiao, Dong, Liu, Qiang, Lei, Lei, Sun, Yiling, Ouyang, Zhengbiao, Tao, Keyu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2019
Materias:
Nano Idea
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6342740/
https://www.ncbi.nlm.nih.gov/pubmed/30671732
http://dx.doi.org/10.1186/s11671-019-2852-y
Descripción
Sumario:A graphene-loaded metamaterial absorber is investigated in the mid-infrared region. The light-graphene interaction is greatly enhanced by virtue of the coupled resonance through a cross-shaped slot. The absorption peaks show a significant blueshift with increasing Fermi level, enabling a wide range of tunability for the absorber. A simple circuit model well explains and predicts this modulation behavior. Our proposal may find applications in a variety of areas such as switching, sensing, modulating, and biochemical detecting. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1186/s11671-019-2852-y) contains supplementary material, which is available to authorized users.

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