Spectral Emissivity and Thermal Conductivity Properties of Black Aluminum Films.

ABSTRACT: Black aluminum is a material characterized by high surface porosity due to columnar growth and exhibits unique optical properties that make it attractive for applications such as light trapping, infrared detection, and passive thermal radiation cooling. In this study, we correlate the structural and optical properties of black aluminum by comparing it with conventional reflective aluminum layers. These layers of varying thicknesses were deposited on fused silica substrates, and their optical properties were analyzed. COMSOL simulations, supported by experimental data, reveal that black aluminum's structure leads to a significant reduction in visible light reflectivity and an increase in emissivity in the near- and mid-infrared ranges. This enhanced emissivity is partly due to the presence

SUBMITTER: More-Chevalier J 

PROVIDER: S-EPMC11841031 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature