These plane wings can repair themselves
from Popular Mechanics
Being high in the air at high speeds all the time can take a toll on airplane wings. But for the tiny breaks that can add up over time, University of Bristol researches have come up with a solution: a liquid carbon capsule that releases when wings are damaged and fills in the gaps. The researches took inspiration from how humans scab when cut. A catalyzing agent in the wings interacts with the temperature-sensitive carbon, causing it to coagulate.
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