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966 Battery-Free Wearables: New Thin-Film Tech Generates Power From Body Heat

Ubergizmo
Paulo Montenegro @ Ubergizmo 2 place · 03/25/2026 11:00 EDT

Battery-Free Wearables: New Thin-Film Tech Generates Power From Body Heat

Researchers at Seoul National University have developed a fully flat, wearable power source that generates electricity from body heat, offering a potential path toward battery-free smart clothing and health-monitoring devices. The innovation addresses a longstanding limitation in thermoelectric generators, which convert temperature differences into electrical energy. Thermoelectric devices typically rely on a contrast between a warm surface, such as human skin, and a cooler surrounding environment. However,

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