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.

Via:: http://feeds.sciencedaily.com/~r/sciencedaily/matter_energy/nanotechnology/~3/HwqoZNj0Zzs/171103085222.htm

Synthetic material acts like an insect cloaking device

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