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Double-layer interlaced nested multi-ring array metallic mesh for high-performance transparent electromagnetic

Heyan Wang, Zhengang Lu, Yeshu Liu

    Optics Letters
    |April 15, 2017
    PubMed
    Summary
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    We developed a novel transparent metallic mesh for electromagnetic interference shielding. This nested multi-ring array metallic mesh (NMA-MM) structure achieves high shielding effectiveness while maintaining excellent optical transparency.

    Area of Science:

    • Materials Science
    • Optics and Photonics
    • Electrical Engineering

    Background:

    • Electromagnetic interference (EMI) poses challenges in electronic devices.
    • Transparent shielding solutions are needed for applications requiring both visibility and protection.
    • Existing transparent shielding methods often compromise on effectiveness or optical clarity.

    Purpose of the Study:

    • To introduce a novel nested multi-ring array metallic mesh (NMA-MM) structure.
    • To demonstrate its capability for high-performance transparent electromagnetic interference shielding.
    • To evaluate the optical and shielding properties of a double-layer interlaced NMA-MM configuration.

    Main Methods:

    • Theoretical analysis and experimental validation of the NMA-MM diffraction pattern.

    Related Experiment Videos

  • Fabrication of a double-layer interlaced NMA-MM structure using transparent quartz-glass substrate.
  • Measurement of shielding effectiveness (SE) in the Ku-band and optical transmittance.

    • Main Results:

    • The NMA-MM exhibited a highly uniform diffraction pattern.
    • The double-layer interlaced NMA-MM structure achieved SE > 27 dB in the Ku-band, peaking at 37 dB at 12 GHz.
    • High normalized optical transmittance of 90% with minimal image quality degradation was observed.

    Conclusions:

    • The developed double-layer interlaced NMA-MM structure offers effective EMI shielding.
    • The structure maintains high optical transparency, suitable for transparent electronic displays and windows.
    • This technology shows significant potential for practical applications in transparent EMI shielding devices.