MIT scientists create robotic FIREFLIES that could help search-and-rescue missions

Tiny robotic fireflies that weigh barely more than a paper clip and glow as they fly could be used to aid search-and-rescue missions, researchers claim. Engineers at MIT previously developed insect-sized robots with tiny artificial muscles that allow them to zip around with bug-like agility by rapidly flapping their wings. The engineers have now found a way to embed minuscule electroluminescent particles into these artificial muscles, meaning they emit coloured light during flight. The robots can use this light to communicate with each other, and could even use it to signal for help in emergency situations, according to the researchers. For example, if sent on a search-and-rescue mission into a collapsed building, a robot that finds survivors could use lights to signal others and call for help.