A KAIST research team has developed a smart patch that can precisely observe internal changes through sweat when simply attached to the body. An era is opening where it's possible to precisely assess the body's health status using only sweat instead of blood tests.
The research team developed a thin and flexible wearable sweat patch that can be directly attached to the skin. This patch incorporates both microchannels for collecting sweat and an ultrafine nanoplasmonic structure, that label-freely analyzes sweat components using light.
The research team applied the patch to actual human subjects and succeeded in continuously tracking the changing components of sweat over time during exercise. They demonstrated for the first time in the world that three metabolites—uric acid, lactic acid, and tyrosine—can be quantitatively analyzed simultaneously, as well as how they change depending on exercise and diet. In particular, by using artificial intelligence analysis methods, they were able to accurately distinguish signals of desired substances even within the complex components of sweat.
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