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Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
Published on: December 27, 2012
Double-T metamaterial for parallel and normal transverse electric incident waves.
Abdelwaheb Ourir1, Redha Abdeddaim, Julien de Rosny
1Institut Langevin, Ecole Supérieure de Physique et de Chimie Industrielles ParisTech, UMR 7587, CNRS, Laboratoire Ondes et Acoustique (LOA), 10 rue Vauquelin 75231, Paris Cedex 05, France. a.ourir@espci.fr
Optics Letters
|May 5, 2011
Summary
Researchers achieved a negative refractive index using stacked T-shaped resonators. This metamaterial design offers tunable frequency shifts and shows potential for terahertz and infrared applications.
Area of Science:
- Plasmonics
- Metamaterials
- Electromagnetism
Background:
- Hybridized plasmonic modes are crucial for advanced optical and electromagnetic applications.
- T-shaped resonators offer unique electromagnetic responses.
Purpose of the Study:
- To investigate electric and magnetic hybridized plasmonic modes using stacked T-shaped resonators.
- To demonstrate and control negative refractive index properties.
Main Methods:
- Numerical simulations and experimental verification were employed.
- Two T-shaped resonators were stacked in a head-to-toe configuration.
- The gap distance between resonators was adjusted to control frequency shifts.
Main Results:
- Stacking T-shaped resonators created hybridized plasmonic modes.
- A head-to-toe configuration inverted the hybridization.
- A negative refractive index close to -1 was achieved at 4.3 GHz for transverse electric (TE) waves.
- This left-handed behavior was consistent for parallel and normal TE incident wave vectors.
Conclusions:
- The double-T unit cell enables precise control over electromagnetic properties.
- This metamaterial design is suitable for developing terahertz and infrared applications.
- The demonstrated negative refractive index opens possibilities for novel device functionalities.
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