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Abstract This paper proposes an infrared dual-bandpass conductive micromesh coating to provide strong electromagnetic shielding (SE) protect for dual-wavelength infrared sensors. Firstly, we design the dual-infrared resonant micromesh coating structure… Click to show full abstract
Abstract This paper proposes an infrared dual-bandpass conductive micromesh coating to provide strong electromagnetic shielding (SE) protect for dual-wavelength infrared sensors. Firstly, we design the dual-infrared resonant micromesh coating structure with hexagonal arrays of ring and circular apertures, then we determine the micromesh coating structure parameters and analyze the effect factors of dual-infrared transmittance. Finally, we simulate the dual-infrared bandpass filtering characteristics in infrared waveband and the electromagnetic shielding effectiveness in the microwave interference frequency-band. Simulation results show that the dual-bandpass micromesh coating filter has two resonance wavelengths of 2.63 μm and 7.40 μm with the corresponding extraordinary transmittances of 90% and 97% respectively, while it has a strong shielding effectiveness of 30 dB over 1–18 GHz.
Journal Title: Materials Chemistry and Physics
Year Published: 2019
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