Spectral Response and Wavefront Control of a C-Shaped Fractal Cadmium Telluride/Silicon Carbide Metasurface in the THz Bandgap

We report theoretical investigations on the spectral behavior of two fractal metasurfaces, performed in the 3–6 THz frequency window (5–10 μm equivalent wavelength window), under illumination with both linear and circular polarization state fields. Both metasurfaces stem from the same tree-like stru...

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Bibliographic Details
Published inMaterials Vol. 15; no. 17; p. 5944
Main Authors Bărar, Ana, Dănilă, Octavian
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 28.08.2022
MDPI
Subjects
Cadmium
Cadmium telluride
Cadmium tellurides
Circular polarization
Complexity
Electric fields
fractal metasurfaces
Fractals
frequency selective surfaces
Geometry
Investigations
Metasurfaces
Remote sensing systems
Silicon carbide
Silicon substrates
Simulation
Spectral sensitivity
Spectrum analysis
terahertz bandgap
Terahertz frequencies
Wave front control
Wave fronts
Romania
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Summary:We report theoretical investigations on the spectral behavior of two fractal metasurfaces, performed in the 3–6 THz frequency window (5–10 μm equivalent wavelength window), under illumination with both linear and circular polarization state fields. Both metasurfaces stem from the same tree-like structure, based on C-shaped elements, made of cadmium telluride (CdTe), and deposited on silicon carbide (SiC) substrates, the main difference between them being the level of structural complexity. The simulated spectral behavior of both structures indicates the tunability of the reflection spectrum by varying the complexity of the tree-like structure.
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ISSN:1996-1944
1996-1944
DOI:10.3390/ma15175944