Gold supraballs trap almost all sunlight.

Gold supraballs trap almost all sunlight. “This results in ~90% absorption across the solar spectrum” by stacking self-assembling gold nanospheres into textured coatings that soak up UV, visible, and near-infrared, then turn it into heat for thermal devices. The payoff: “nearly 2.4 times the power output of conventional nanoparticle coatings.” ~ learn more