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Terahertz waves dynamic diffusion in 3D printed structures.

Mauro Missori1,2, Laura Pilozzi3,4, Claudio Conti1,2,5

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This summary is machine-generated.

3D-printed terahertz metamaterials demonstrate tunable spectral forbidden bands for terahertz radiation. Disorder in these dielectric rod structures affects band closure and THz pulse diffusion, enabling size distribution estimation.

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Area of Science:

  • Metamaterials
  • Terahertz (THz) technology
  • 3D printing applications

Background:

  • Metamaterials enable efficient terahertz devices for wave manipulation.
  • Terahertz metamaterials are compatible with current 3D printing technologies due to their size.

Purpose of the Study:

  • To propose and investigate terahertz photonic structures using 3D-printed dielectric rods.
  • To analyze the spectral and dynamic response of these structures.

Main Methods:

  • Fused deposition modeling 3D-printing for fabricating acrylonitrile styrene acrylate structures.
  • Terahertz time-domain spectroscopy for experimental analysis.
  • Analytical solutions of Maxwell equations and simulations for interpretation.

Main Results:

  • Structures exhibit spectral forbidden bands for terahertz radiation, tunable by optical and geometrical parameters.
  • Disorder in 3D-printed structures leads to band closure above 0.3 THz.
  • THz pulse diffusion analysis quantifies structural disorder and estimates element size distributions.

Conclusions:

  • 3D-printed terahertz metamaterials offer controllable spectral properties.
  • Structural disorder impacts terahertz wave propagation, providing a method for characterization.
  • The study demonstrates the potential of low-cost 3D printing for advanced terahertz photonic devices.