Photorealistic close-up of a sleek matte-black wireless earbud resting on a human palm, with a faint amber glow visible through a translucent panel suggesting internal energy activity, captured in a high-detail commercial product photography style.

Motion-Powered Earbuds

In the Human Performance Laboratory at Waseda University in Tokyo, researchers fitting subjects with MEMS accelerometers before a standard walking protocol generate a waveform that tells an interesting story. The sensor bonded to the mastoid bone, the hard protrusion directly behind the ear, records a clean oscillating signal at approximately 1.8 hertz whenever the subject…

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Photorealistic cutaway of a modern office atrium staircase with exposed energy-harvesting components inside each tread and concealed wiring in the stringer.

Energy-Generating Staircases: From Wasted Footfalls to Autonomous Infrastructure

Canary Wharf station in London handles around 100,000 passengers on a busy weekday. Many of them use the staircases – the long inclined runs connecting the underground platforms to street level. Each person descending pushes several hundred newtons of force into a step, holds it for a fraction of a second, transfers their weight forward,…

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