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    This study introduces a novel single-layer metasurface for multiband stealth, effectively reducing radar cross-section (RCS) and providing laser and infrared shielding. This innovative design offers versatile protection across various spectra.

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    Area of Science:

    • Electromagnetics and Materials Science
    • Metasurface Technology
    • Stealth and Camouflage

    Background:

    • Conventional stealth technologies often address specific frequency bands or threats.
    • Achieving simultaneous stealth across radar, laser, and infrared spectra is a significant challenge.
    • Multifunctional materials are crucial for advanced defense and aerospace applications.

    Purpose of the Study:

    • To develop a single-layer metasurface for multifunctional stealth.
    • To integrate radar cross-section (RCS) reduction, laser stealth, and infrared shielding.
    • To demonstrate a novel approach for multiband compatible stealth using metasurface technology.

    Main Methods:

    • Design of a single-layer metallic metasurface with specialized sub-cells.
    • Application of interference cancellation principles for RCS reduction (13-21 GHz).
    • Implementation of a chessboard phase distribution for laser specular reflection cancellation (1.06 µm).
    • Characterization of low emissivity (<0.03) in infrared atmospheric windows (3-5 µm and 8-14 µm).

    Main Results:

    • Achieved a 10 dB decrease in RCS over a broad frequency range (13-21 GHz).
    • Demonstrated efficient cancellation of specular reflection at a laser wavelength of 1.06 µm.
    • Exhibited extremely low emissivity (<0.03) for infrared shielding in key atmospheric windows.
    • Confirmed operational independence between microwave and laser stealth functionalities due to wavelength differences.

    Conclusions:

    • The proposed single-layer metasurface successfully integrates multiband stealth capabilities.
    • The design exhibits excellent performance in RCS reduction, laser stealth, and infrared shielding.
    • The thin, multifunctional structure holds significant promise for future applications in advanced stealth technology.