Novel ultra-narrow-band wave absorber of metal nano ring column array structure
A metal nano, array structure technology, applied in instruments, optical components, optics, etc., can solve the problems of small quality factor of ultra-narrow-band absorber, insignificant surface lattice resonance effect, and limited application of narrow-band absorber, etc. To achieve the effect of compact structure, simple structure and high quality factor
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[0025] This embodiment provides a novel ultra-narrow-band wave absorber with a metal nano-ring column array structure. The novel ultra-narrow-band wave absorber with a metal nano-ring column array structure is composed of a periodic metal nano-ring column structure; the nano-ring column The array structure consists of a dielectric substrate, a bottom continuous metal thin film layer, and a resonator from bottom to top; the nano ring column is a double ring column structure with the same ring wall thickness; the thickness of the bottom continuous metal film layer is greater than that of the incident wave at the Describes the skin depth in the underlying continuous metal film layer in the same material metal.
[0026] Such as figure 1 , the bottom of the nano-ring pillar array structure is a cuboid made of gold material, the cuboid is provided with a first nano-ring pillar, the first nano-ring pillar is under the second nano-ring pillar, and the inner diameters of the two nano-r...
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