Wearable sensor measures skin hydration / Sensore indossabile misura l'idratazione della pelle. Segnalato dal Dott. Giuseppe Cotellessa / Reported by Dr. Joseph Cotellessa (Credit: Shanshan Yao) Engineers from North Carolina State University have created a wearable sensor for measuring skin hydration, which has a range of potential medical and lifestyle applications. Described in the journal Advanced Healthcare Materials , the sensor consists of two elastic polymer composite electrodes that contain conductive silver nanowires. Skin’s electric properties change in relation to its hydration, and it’s these changes that the electrodes measure. “We have developed technology that allows us to track an individual’s skin hydration in real time,” said Yong Zhu, an associate professor of mechanical and aerospace engineering at NC State and co-author of the paper. “Our sensor could be used to protect the health of people working in hot conditions, imp