Energy density above a resonant metamaterial in the GHz : an alternative to near-field thermal emission detection

Karl Joulain (1) , Jérémie Drevillon (1) , Younes Ezzahri (1)

1 PPrime [Poitiers] - Institut Pprime [UPR 3346]

This paper proposes an experiment to easily detect radiative heat transfer in the microwave range. Following an idea given by Pendry more than a decade ago, we show that a 3D array of tungsten 2micrometer radius wires with a 1 cm period makes a low cost material exhibiting a surface plasmon in the microwave range around 2.9 GHz. Such a heated material should exhibit an emission peak near the plasmon frequency well above ambient emission. Analysis of the signal detected in the near-field should also be a tool to analyze how homogenization theory applies when the distance to the material is of the order of the metamaterial period. It could also be give a model to non-local dielectric properties in the same conditions.

Mots clés: Near-Field Heat Transfer; Near-Field Heat radiation; Metamaterials; Microwave; Microwave.

Domaines: Thermique [physics.class-ph]; Thermique [physics.class-ph]; Optique [physics.optics]

Karl Joulain, Jérémie Drevillon, Younes Ezzahri. Energy density above a resonant metamaterial in the GHz : an alternative to near-field thermal emission detection. 7th International Symposium on Radiative Transfer, RAD-13, Jun 2013, Kusadasi, Turkey. pp.RAD-13-NS2. ⟨hal-00904479⟩