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.
| Original language | English |
|---|---|
| Pages (from-to) | 323-328 |
| Number of pages | 6 |
| Journal | Materials Chemistry and Physics |
| Volume | 234 |
| DOIs | |
| State | Published - 15 May 2019 |
Keywords
- Electromagnetic interference shielding
- Infrared dual-bandpass filters
- Ring and circular apertures
- Subwavelength diffractive structures
- Transparent conductive coatings
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