Chinese and US scientists team up to create a robot launching system which can penetrate skin and could replace needle-based drug injections
The method works by rapidly heating light-absorbing materials with a laser, causing water droplets on the surface around the material to boil, triggering the formation of vapour bubbles.
Once these bubbles grow to a certain point, they suddenly collapse – rapidly releasing energy and creating a strong force that can launch millimetre-scale jumpers 1.5 metres (5 feet) into the air.
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