Humans are complex machines, with moving parts that bend, squish, stretch, flow, quiver, and beat. Scientists are now plugging into these energy sources to solve a common problem afflicting sensors, wearables, and implanted medical devices—the dreaded flat battery.
Devices that are self-powered by design could be the solution, and researchers have discovered that the human body itself can be a handy power source—just in time to power the exploding market in wearables. “Electroceuticals” are starting to challenge pharmaceuticals in medicine, so more people will depend on devices such as implanted electrostimulators and pacemakers in order to stay healthy.
“Biobatteries” and energy scavenging could make these devices energy-autonomous, removing the need for
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