Watch a laser-powered RoboFly flap its tiny wings

Making something fly involves a lot of trade-offs. Bigger stuff can hold more fuel or batteries, but too big and the lift required is too much. Small stuff takes less lift to fly but might not hold a battery with enough energy to do so. Insect-sized drones have had that problem in the past — but now this RoboFly is taking its first flaps into the air… all thanks to the power of lasers.

We’ve seen bug-sized flying bots before, like the RoboBee, but as you can see it has wires attached to it that provide power. Batteries on board would weigh it down too much, so researchers have focused in the past on demonstrating that flight is possible in the first place at that scale.

But what if you could provide power externally without wires? That’s the idea behind the University of…

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