Cross interface model for the thermal transport across interface between overlapped boron nitride nanoribbons

TL;DR

This paper introduces an analytical cross interface model (CIM) to understand thermal transport at the intersection of overlapped boron nitride nanoribbons, validated by molecular dynamics simulations, revealing key factors influencing heat transfer.

Contribution

The paper presents a novel analytical model (CIM) for thermal transport at cross interfaces, validated against simulations, and highlights the role of a new factor ({ta}) in heat transfer.

Findings

CIM accurately predicts thermal transport at the cross interface.

The factor ({ta}) significantly influences thermal conductance.

Validation shows good agreement with molecular dynamics simulations.

Abstract

The application of low-dimensional materials for heat dissipation requires a comprehensive understanding of the thermal transport at the cross interface, which widely exists in various composite materials and electronic devices. In this work, we proposed an analytical model, named as cross interface model (CIM), to accurately reveal the essential mechanism of the two-dimensional thermal transport at the cross interface. The applicability of CIM is validated through the comparison of the analytical results with molecular dynamics simulations for a typical cross interface of two overlapped boron nitride nanoribbons. Besides, it is figured out that the factor ({\eta}) has important influence on the thermal transport besides the thermal resistance inside and between the materials, which is found to be determined by two dimensionless parameters from its expression. Our investigations deepen the understanding of the thermal transport at the cross interface and also facilitate to guide the applications of low-dimensional materials in thermal management.