Spider hair-inspired sensors could give drones a “spidey-sense”

Inspired by this, the Purdue team set out to create mechanosensors that will ignore minor forces, and only signal the rest of the machine after that sensation hits a certain threshold. The trick to this is making the sensors out of a material that starts off stiff, but changes shape rapidly when an external force is applied to it. When its changed shape reaches a certain point, conductive particles inside the material come together and allow electricity to flow through. That in turn sends a signal to the rest of the machine, which responds as needed.

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