New sensors can be printed directly on human skin

The researchers explained that wear-resistant sensors have evolved a lot in recent years, now from

watches and electrodes, we switched to bendabledevices that provide much more accurate biometric measurements. Therefore, an international team of researchers printed sensors directly onto human skin without heating. Previously, temperatures of 300 degrees Celsius were used for this - the patient cannot tolerate them painlessly.

Therefore, the researchers changed the formulaauxiliary layer, the printing material and discovered that skin can now be printed directly onto the patient's skin. The auxiliary layer, printable at room temperature, consists of a paste of polyvinyl alcohol, the main ingredient in peelable face masks, calcium carbonate, which consists of eggshells . The layer reduces the roughness of the printed surface and produces an ultra-thin layer of metallic patterns that can bend and flex while maintaining electromechanical capabilities.

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The sensors are able to accurately and continuously recordtemperature, humidity, blood oxygen level and pulse. The researchers also networked the sensors on the body into a wireless network to track a combination of signals as they passed.

The process is also environmentally friendly. The sensor stays strong in cool water for several days. “The device can be recycled as removing it will not damage it. This is especially important for people with sensitive skin such as the elderly and babies. The device is useful and does not constitute an additional burden on humans or the environment. "

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