New breathable, ultra-thin skin sensor to monitor health
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Scientists at the University of Tokyo in Japan have developed a hypoallergenic, breathable sensor that can be worn on the skin continuously for a week without discomfort, and may pave the way for wearable devices that can monitor health continuously over a long period. The sensor is so light and thin that users forget they even have it on, making it a practical use in medical and sports applications.
Researchers developed an electrode constructed from nanoscale meshes containing a water-soluble polymer, polyvinyl alcohol (PVA), and a gold layer – materials considered safe and biologically compatible with the body. The device can be applied by spraying a tiny amount of water, which dissolves the PVA nanofibres and allows it to stick easily to the skin. They also conducted a skin patch test on 20 subjects and detected no inflammation on the participants’ skin after they had worn the device for a week. The device's porous mesh structure exhibited superior gas permeability compared to that of the other materials and was highly durable...


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