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Updated: May 21, 2026
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Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
Published on: December 27, 2012
Self-organization approach for THz polaritonic metamaterials
A Reyes-Coronado1, M F Acosta, R I Merino
1Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology-Hellas (FORTH), P.O. Box 1385, 71110 Heraklion, Crete, Greece. a.reyescoronado@gmail.com
Optics Express
|June 21, 2012
Summary
Researchers fabricated anisotropic metamaterials using eutectic self-organization. These materials exhibit hyperbolic dispersion, enabling potential negative refractive index and advanced imaging applications in the terahertz (THz) range.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Optics and Photonics
Background:
- Metamaterials offer unique electromagnetic properties not found in natural materials.
- Anisotropic metamaterials with hyperbolic dispersion are of interest for advanced optical applications.
Purpose of the Study:
- To fabricate and characterize anisotropic eutectic metamaterials.
- To investigate their electromagnetic response in the terahertz (THz) frequency range.
- To explore their potential for negative refractive index and imaging applications.
Main Methods:
- Fabrication via eutectic directional solidification self-organization.
- Electromagnetic characterization using specular reflectance measurements (3-11 THz).
- Numerical calculations solving Maxwell equations for spectral analysis.
Main Results:
- Successful fabrication of anisotropic metamaterials with LiF rods in KCl or NaCl hosts.
- Good agreement between experimental and calculated specular reflectance spectra.
- Demonstrated hyperbolic dispersion relation in the THz range for the fabricated systems.
Conclusions:
- The fabricated metamaterials exhibit tunable electromagnetic properties.
- The hyperbolic dispersion opens possibilities for negative refractive index and advanced THz imaging.
- Eutectic self-organization is a viable method for creating functional anisotropic metamaterials.
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