A new prototype of the smallest, lightest untethered flying robot has been developed, with a wingspan under a centimeter and weighing just 21 milligrams.

The robot is powered wirelessly using magnetic fields and can fly without tethers, making it suitable for tasks like search and rescue, machinery inspection, and pollination.

However, its current range is limited to about 10 centimeters from the magnetic source.

Researchers are exploring ways to extend its range by enhancing magnetic fields and miniaturizing the robots further, IEEE Spectrum has reported.

The robots have shown efficiency in generating lift, outperforming many other flying robots and even insects like fruit flies and hummingbirds.

Written by B.C. Begley