Temperature dependence of the thermal boundary resistivity of glass-embedded metal nanoparticles

TL;DR

This study measures how the thermal boundary resistivity of glass-embedded silver nanoparticles varies with temperature, providing experimental data to inform theories on nanoscale heat transfer relevant to nanomedicine and thermal management.

Contribution

It offers the first experimental benchmark for the temperature dependence of thermal boundary resistivity at metal nanoparticle interfaces.

Findings

Thermal boundary resistivity decreases with temperature from 300 to 70 K.

Provides quantitative data for modeling nanoscale heat transfer.

Highlights importance for nanomedicine and thermal management applications.

Abstract

The temperature dependence of the thermal boundary resistivity is investigated in glass-embedded Ag particles of radius 4.5 nm, in the temperature range from 300 to 70 K, using all-optical time-resolved nanocalorimetry. The present results provide a benchmark for theories aiming at explaining the thermal boundary resistivity at the interface between metal nanoparticles and their environment, a topic of great relevance when tailoring thermal energy delivery from nanoparticles as for applications in nanomedicine and thermal management at the nanoscale