Surface phonon-polaritons enhance thermal conduction in SiN nanomembranes
Mesoscale and Nanoscale Physics
2019-08-06 v1 Applied Physics
Abstract
Surface phonon-polaritons can carry energy on the surface of dielectric films and thus are expected to contribute to heat conduction. However, the contribution of surface phonon-polaritons (SPhPs) to thermal transport has not been experimentally demonstrated yet. In this work, we experimentally measure the effective in-plane thermal conductivity of amorphous silicon nitride membrane and show that it can indeed be increased by SPhPs significantly when the membrane thickness scales down. In particular, by heating up a thin membrane (<100 nm) from 300 to 800 K, the thermal conductivity increases twice due to SPhPs contribution.
Keywords
Cite
@article{arxiv.1908.01247,
title = {Surface phonon-polaritons enhance thermal conduction in SiN nanomembranes},
author = {Yunhui Wu and Jose Ordonez-Miranda and Sergei Gluchko and Roman Anufriev and Sebastian Volz and Masahiro Nomura},
journal= {arXiv preprint arXiv:1908.01247},
year = {2019}
}