# Controlling thermal emission of phonon by magnetic metasurfaces

## TL;DR

This paper demonstrates that magnetic metasurfaces can be used to actively control the thermal emission of phonons by tuning magnetic resonance modes, enabling manipulation of polarization and radiation patterns for thermal management.

## Contribution

It introduces a novel method of controlling phonon thermal emission using magnetic resonance in metasurfaces, with tunable parameters for enhanced thermal management applications.

## Key findings

- Strong coupling between phonon and magnetic resonance observed.
- Tunable magnetic resonance wavelength matches phonon resonance.
- Manipulation of polarization and angular radiation achieved.

## Abstract

Our experiment shows that the thermal emission of phonon can be controlled by magnetic resonance (MR) mode in a metasurface (MTS). Through changing the structural parameter of metasurface, the MR wavelength can be tuned to the phonon resonance wavelength. This introduces a strong coupling between phonon and MR, which results in an anticrossing phonon-plasmons mode. In the process, we can manipulate the polarization and angular radiation of thermal emission of phonon. Such metasurface provides a new kind of thermal emission structures for various thermal management applications.

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Source: https://tomesphere.com/paper/1702.04301