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Robot skin senses warm bodies


Still Waters

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A heat-sensing film could let robots detect when humans are around, like pit vipers hunting out warm-blooded prey.

The flexible, transparent coating is made of pectin, a low-cost plant material used to set jam. Unlike conventional electronics, it relies on currents of ions rather than electrons to detect temperature variations – just like natural membranes used by the snakes.

The film can sense temperature changes as small as 10 millikelvin, which is twice as sensitive as human skin. It can detect a warm body the size of a rabbit from a metre away, 

https://www.newscientist.com/article/2118517-robot-skin-senses-warm-bodies-like-a-snake-locating-nearby-prey/

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