Bumblebees can hurt their wings and still fly. Researchers want their own aerial robots to do the same.
, but miniscule imperfections in them can cause sparks that damage the device. Around 15 years ago, however, researchers realized that DEA failures from a single minor injury could be avoided via what’s known as “self-clearing,” in which a high enough voltage applied to the DEA disconnects an electrode from the problem area while keeping the rest of its structure intact.
For large wounds, such as a tear in the wing that lets too much air pass through it, researchers developed a laser cauterization method to inflict minor damage around the injury perimeter. After accomplishing this, they were then able to utilize self-clearing to burn away the damaged electrode and isolate the issue. To assess efficacy, engineers even integrated electroluminescent particles into each actuator.
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