Creation of metasurface from vertically aligned carbon nanotubes as versatile platform for ultra-light THz components
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CitationGorokhov, Gleb. Bychanok, Dzmitry. Kuzhir, Polina. Gorodetskiy, Dmitriy. Kurenya, Aleksandr. Sedelnikova, Olga V. Bulusheva, Lyubov. Okotrub, Alexander. (2020). Creation of metasurface from vertically aligned carbon nanotubes as versatile platform for ultra-light THz components. Nanotechnology, 31 (25) , 255703. 10.1088/1361-6528/ab7efa.
Here a simple and reproducible method for obtaining terahertz metasurfaces formed from multiwall carbon nanotubes (MWCNTs) is presented. The metasurfaces were obtained from a vertically aligned array of MWCNTs using a laser engraving technique followed by polymer covering. The structures under study demonstrate frequency-selective reflection in terahertz range following the Huygens–Fresnel formalism. For a normal incidence of the electromagnetic wave, the model for numerical calculation of backscattering from the metasurfaces was proposed. Lightweight and compact MWCNT-based metasurfaces are capable to replace conventional pyramidal absorbers and could serve as a versatile platform for scalable cost-efficient production of ultra-light electromagnetic components for THz applications.