  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.
