Small as a sand grain
A winged microchip, the size of a sand grain, is being billed as the smallest ever human made flying structure.
According to Nature magazine, the tiny microfliers, designed by engineers at Northwestern University are intended to be carried by the wind and monitor pollution levels or the spread of airborne diseases.
The motorless devices use the same technology as a maple tree’s free-falling propeller seeds, so they don’t need a motor.
https://fudzilla.com/news/automotive...ying-structure
Microchip with wings is the smallest flying structure
27th September 2021, 07:08
Microchip with wings is the smallest flying structure 
