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KAUST scientists developed a durable “electronic skin” that mimics the natural functions of human skin, such as temperature and tactile sensing.
The material that mimics human skin in strength, extensibility and sensitivity could be used to collect biological data in real time. Electronic skin or e-skin can play an important role in next-generation prosthetics, personalized medicine, soft robotics and artificial intelligence.
The team, led by Caio and colleague Jie Shen, has now created a durable e-skin using a silica nanoparticle-reinforced hydrogel as a strong, flexible substrate and 2-D MXene titanium carbide as a bonded sensing layer together with nanowires. highly conductive. The durable e-skin developed by KAUST using this hydrogel creates a strong and flexible substrate.
“Hydrogel makes up more than 70% of water, making it very compatible with human skin tissues,” Shen explains. By pre-compressing the hydrogel in all directions, applying a layer of nanowires, and then carefully controlling its release, the scientists created conductive paths to the sensor layer that remained intact even when the material was stretched to 28 times its original size. .
Their prototype e-skin was able to perceive objects from a distance of 20 centimeters, respond to stimuli in less than a tenth of a second and, when used as a pressure transducer, was able to distinguish handwriting written on its. After 5,000 deformations, it continued to perform well and each time recovered in about a quarter of a second. “For e-skin, maintaining resilience1 after repeated use is a tremendous success,” says Shen, continuing “which mimics the elasticity and rapid recovery of human skin.”
Source: Techxplore,
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