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Published on: October 18, 2012
Thermal emission from a metamaterial wire medium slab
G D'Aguanno1, N Mattiucci, A Alù
1AEgis Tech., Nanogenesis Division 410 Jan Davis Dr, Huntsville, Alabama 35806, USA. giuseppe.daguanno@us.army.mil
Optics Express
|April 27, 2012
Summary
We explore thermal emission from metamaterial wire mediums, identifying two key regimes for efficient emission. Geometric parameters and temperature control these broadband and narrow-band emission characteristics.
Area of Science:
- Condensed matter physics
- Metamaterials
- Thermal radiation
Background:
- Metamaterials offer unique electromagnetic properties not found in natural materials.
- Understanding thermal emission from engineered structures is crucial for advanced optical and thermal management applications.
Purpose of the Study:
- To investigate thermal emission from a metamaterial wire medium.
- To identify and characterize different regimes of efficient thermal emission.
- To explore methods for controlling emission properties via structural and thermal parameters.
Main Methods:
- Theoretical investigation of thermal emission.
- Analysis of metamaterial wire medium embedded in a dielectric host.
- Examination of emission regimes near the effective plasma frequency and Bragg scattering band-edge.
Main Results:
- Identified two distinct regimes for efficient thermal emission: broadband near the effective plasma frequency and narrow-band resonant emission at the band-edge.
- Demonstrated that geometrical parameters and temperature significantly influence the spectral position and relative strength of these emission mechanisms.
Conclusions:
- Metamaterial wire mediums exhibit tunable thermal emission properties.
- Control over broadband and narrow-band emission can be achieved by manipulating metamaterial design and operating temperature.
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