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

https://connerehac335.alderbrief.com/posts/flood-resistant-flooring-solutions-due-to-utilizing-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.