Liquid Metal Lets Wearables Power Themselves

An innovation from the realm of science fiction turns the bodyโ€™s biomechanical energy into electricity.

Watching a sci-fi flick, like those in the โ€œTerminatorโ€ series, probably shouldnโ€™t inspire you to get to work on advanced robotics โ€” at least, not without being really careful about it.

But one aspect of those movies and others like them โ€” namely, the ability for robots to self-repair themselves by deploying a liquid material โ€” apparently prompted one engineer to develop a wearable technology that utilizes liquid metal.

Purdue University researchers this week outlined the details behind a new device known as the liquid metal inclusion-based triboelectric nanogenerator.

The long-named wearable device includes a layer of silicone embedded with liquid metal, which allows it to convert the human bodyโ€™s biomechanical signals into electricity.

Researchers said the system could lead to devices that power themselves using energy from the body that would be otherwise wasted.

And those human-integrated technologies, in turn, could have applications for everything from consumer electronics and health monitors to robotics, virtual reality systems and the military.

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