Engineers at Northwestern University have built a drone that vanishes without camouflage or transparent panels. Its trick is ...

Engineers at Northwestern University have unveiled a drone that nearly vanishes in mid-air not by using advanced camouflage or light-bending materials, but simply by spinning too fast for the eye to ...

Northwestern engineers built a spinning drone that exploits motion blur, making it about ten times less visible than conventional drones.

Northwestern University in the US has developed a low-visibility drone called the “Phantom Twist.” ...