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Updated: Dec 8, 2025
09:33
Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
Published on: June 7, 2019
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Electromagnetic surface waves supported by a resistive metasurface-covered metamaterial structure
M Z Yaqoob1,2, A Ghaffar3, Majeed A S Alkanhal4
1Department of Physics, University of Agriculture, Faisalabad, Pakistan.
Scientific Reports
|September 24, 2020
Summary
This study analyzes electromagnetic surface waves on a metamaterial structure covered by a resistive metasurface. Researchers found geometrical parameters significantly influence surface wave properties, enabling tailored GHz-range applications.
Area of Science:
- Electromagnetics and Metamaterials
- Surface Wave Physics
Background:
- Investigates electromagnetic surface waves on complex structures.
- Utilizes Kramers-Kronig relations for metamaterial simulation and impedance boundary conditions for resistive metasurfaces.
Purpose of the Study:
- To analytically and numerically solve for electromagnetic surface waves.
- To explore the tunability of these waves by varying structural parameters.
- To present dispersion curves, field profiles, effective mode index, and phase speeds.
Main Methods:
- Developed analytical expressions for transverse magnetic (TM) and transverse electric (TE) polarized surface waves.
- Employed numerical evaluation of characteristic equations to determine propagation constants.
- Analyzed the impact of metamaterial and metasurface thicknesses and permittivities.
Main Results:
- Derived characteristic equations and computed propagation constants for TM and TE modes.
- Presented detailed dispersion curves, electric field profiles, effective mode index, and phase speeds.
- Identified geometrical parameters as highly sensitive to effective mode index and phase speed.
Conclusions:
- The study accurately models electromagnetic surface waves, consistent with published results.
- Parameter selection allows for precise control of surface wave characteristics in the GHz range.
- Potential applications include waveguide design, speed control, communication devices, and light trapping.
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