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A new self-powered, wristwatch-style health monitor can track a wearer’s pulse and wirelessly communicate with a nearby smartphone or tablet—all without needing an external power source or a battery.
In a paper in the journal Nano Energy, researchers describe their invention, built via 3D printing of nanomaterials on flexible substrates for real-time and wireless monitoring of vital signs.
The current prototype serves as a self-powered radial artery pulse monitor, but other aspects of health—such as heart rate, body temperature, or blood pressure—can be gauged by…