Surface roughness at the nanoscale alters light scattering, heat transfer, and fluid flow

https://garretthymv635.publishlane.com/posts/flooring-that-works-as-hard-as-you-do-matter-surfaces

Surface roughness at the nanoscale alters light scattering, heat transfer, and fluid flow, enabling engineered matter surfaces that tailor optical gloss, drag, and thermal emissivity.