Molecular Structure Effect of a Self-Assembled Monolayer on Thermal Resistance across an Interface.

ABSTRACT: Understanding heat transfer across an interface is essential to a variety of applications, including thermal energy storage systems. Recent studies have shown that introducing a self-assembled monolayer (SAM) can decrease thermal resistance between solid and fluid. However, the effects of the molecular structure of SAM on interfacial thermal resistance (ITR) are still unclear. Using the gold-SAM/PEG system as a model, we performed nonequilibrium molecular dynamics simulations to calculate the ITR between the PEG and gold. We found that increasing the SAM angle value from 100° to 150° could decrease ITR from 140.85 × 10-9 to 113.79 × 10-9 m2 K/W owing to penetration of PEG into SAM chains, which promoted thermal transport across the interface. Moreover, a strong dependence of ITR on bond st

SUBMITTER: Song L 

PROVIDER: S-EPMC8588352 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature