# Near-field heat transfer between multilayer hyperbolic metamaterials

## TL;DR

This paper reviews near-field heat transfer between multilayer hyperbolic metamaterials, analyzing mode contributions, layer arrangements, and the accuracy of effective medium theory predictions.

## Contribution

It provides a comprehensive analysis of how multilayer configurations and surface versus hyperbolic modes influence heat transfer, including comparisons with effective medium theory.

## Key findings

- Hyperbolic bands formation affects heat flux
- Layer ordering impacts heat transfer efficiency
- Effective medium theory predictions vary with configurations

## Abstract

We review the near-field radiative heat flux between hyperbolic materials focusing on multilayer hyperbolic meta-materials. We discuss the formation of the hyperbolic bands, the impact of ordering of the multilayer slabs, as well as the impact of the first single layer on the heat transfer. Furthermore, we compare the contribution of surface modes to that of hyperbolic modes. Finally, we also compare the exact results with predictions from effective medium theory.