研究目的
To numerically and experimentally characterize surface waves with hybrid TE-TM polarization supported by a hyperbolic metasurface in the frequency range from 2 to 8 GHz.
研究成果
The study experimentally demonstrated the existence of surface waves with hybrid TE-TM polarization on a hyperbolic metasurface, showing different shapes of equal frequency contours corresponding to various excitation and propagation regimes. The observed effects are promising for applications in optical information technologies, optoelectronic and photonic devices, on-chip networks, optomechanics, and biological sensors.
研究不足
The study is limited to the microwave frequency range (2 to 8 GHz) and a specific metasurface design. The effects of nonlocal interactions and the applicability of the effective-medium approximation are also discussed as potential limitations.
1：Experimental Design and Method Selection:
The study involves numerical simulations and experimental measurements of surface waves on a hyperbolic metasurface composed of anisotropic metallic Jerusalem crosses printed on a thin dielectric substrate.
2：Sample Selection and Data Sources:
The metasurface prototype was fabricated using printed circuit board technology, consisting of 31 × 31 unit cells arranged with a periodicity of 10 mm.
3：List of Experimental Equipment and Materials:
An Agilent E8362C Vector Network Analyzer (VNA), coaxial cables, and Faraday loops were used for measurements.
4：Experimental Procedures and Operational Workflow:
Field patterns of quasi-TM and quasi-TE surface waves were measured using different setup configurations (loop-loop, loop-probe, probe-loop, probe-probe) to detect normal electric and magnetic field components.
5：Data Analysis Methods:
The 2D fast Fourier transform was applied to the measured complex field patterns to retrieve equal frequency contours.
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