Boosting Thermal Conductivity by Surface Plasmon Polaritons Propagating along a Thin Ti Film

We experimentally demonstrate boosted in-plane thermal conduction by surface plasmon polaritons (SPPs) propagating along a thin Ti film on a glass substrate. Due to the lossy nature of metal, SPPs can propagate over centimeter-scale distances even along a supported metal film, and the resulting ball...

Full description

Saved in:
Bibliographic Details
Published inPhysical review letters Vol. 130; no. 17; p. 176302
Main Authors Kim, Dong-Min, Choi, Sinwoo, Cho, Jungwan, Lim, Mikyung, Lee, Bong Jae
Format Journal Article
LanguageEnglish
Published United States 28.04.2023
Online AccessGet more information

Cover

More Information
Summary:We experimentally demonstrate boosted in-plane thermal conduction by surface plasmon polaritons (SPPs) propagating along a thin Ti film on a glass substrate. Due to the lossy nature of metal, SPPs can propagate over centimeter-scale distances even along a supported metal film, and the resulting ballistic heat conduction can be quantitatively validated. Further, for a 100-nm-thick Ti film on a glass substrate, a significant enhancement of in-plane thermal conductivity compared to bulk value (∼25%) is experimentally shown. This Letter will provide a new avenue to employ SPPs for heat dissipation along a supported thin film, which can be readily applied to mitigate hot-spot issues in microelectronics.
ISSN:1079-7114
DOI:10.1103/PhysRevLett.130.176302