Synthetic microspheres with nanoscale holes can absorb light from all directions across a wide range of frequencies, making them a candidate for antireflective coatings, according to a team of engineers. The synthetic spheres also explain how the leaf hopper insect uses similar particles to hide from predators in its environment.
from Engineering and Construction News – ScienceDaily https://www.sciencedaily.com/releases/2017/11/171103085222.htm
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