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Keywords:

  • surface plasmons;
  • metamaterials;
  • color filters;
  • terahertz;
  • multi-spectral materials
Thumbnail image of graphical abstract

Multi-spectral materials, using hybridised plasmonic and metamaterial structures, can simultaneously exhibit unique resonant phenomena over several decades of wavelengths. A multi-spectral material that combines a plasmonic colour filter array and a terahertz metamaterial absorber into a single material is a promising prospect for a coaxial multi-spectral imager operating in the visible, near IR, and terahertz wavebands.