🔄FROM THE ARCHIVE The chips may be the smallest ever human-designed flying machines.
— Winged microchips each about the size of a grain of sand may be the smallest-ever artificial flying structures, devices that could one day help monitor air pollution and airborne disease.
By analyzing the aerodynamics of wind-dispersed seeds and modeling how air flows around these microfliers, the scientists pinpointed the ideal structures for slow, controlled flight. Their design helps ensure the microfliers disperse over a broad area and stay aloft for a long time to better monitor the air.
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