Spectrally enhancing near-field radiative transfer between gold gratings by exciting magnetic polariton in nanometric vacuum gaps

Abstract

In the present work, we theoretically demonstrate that near field radiative transport between one dimensional periodic grating microstructures separated by nanometer vacuum gaps can be spectrally enhanced by exciting magnetic polariton. Fluctuational electrodynamics that incorporates scattering matrix theory with rigorous coupled wave analysis is employed to exactly calculate the near field radiative flux between two gold gratings. Besides the well known coupled surface plasmon polaritons, the radiative flux can be also spectrally enhanced due to magnetic polariton, which is excited in the gap between gold ridges. The mechanisms of magnetic polariton in the near field radiative transport are elucidated in detail, while the unusual enhancement cannot be predicted by either the Derjaguin or effective medium approximations. The effects of vacuum gap distance and grating geometry parameters between the two gratings are investigated. The findings will open up a new way to control near field radiative transfer by magnetic polariton with micro or nanostructured metamaterials.

References in corpus (7)

• Near-field thermal transistor
• Broadband super-Planckian thermal emission from hyperbolic metamaterials
• Casimir interaction of dielectric gratings
• Vacuum Thermal Switch Made of Phase Transition Materials Considering Thin Film and Substrate Effects
• Wavelength-Tunable Infrared Metamaterial by Tailoring Magnetic Resonance Condition with VO2 Phase Transition
• Near field radiative thermal transfer between nano-structured periodic materials
• Infrared Frequency-Tunable Coherent Thermal Sources

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