Stick-On Solar-Powered Heart Monitor Fits on a Finger

Scientists at the Riken, a major Japanese research institute, and University of Tokyo have developed a remarkable ambient light-powered cardiac monitor that looks like a transparent bandage.

The underlying technology makes possible other flexible body-worn sensors that don’t need to have an external electric source powering them, including temperature and sweat sensors. Because power is supplied directly from a built-in photovoltaic cell, the noise in the electronics is kept to a minimum, allowing for high-precision measurements.

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