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This Artificial Skin Actually Bruises

Researchers in Hong Kong developed an artificial skin that temporarily displays bruises when damaged.

A recent Medgadget article discussed a new artificial skin that bruises just like the real thing. You’re probably wondering why someone would want that, right? The answer is simple: a responsive prosthesis is more life-like, and can alert the wearer of possible damage. The skin was developed by researchers at the Chinese University of Hong Kong. It’s made with an ionic hydrogel, and shows changes in electrical signaling when it’s deformed and produces a purple hue on the surface.

The hydrogel contains a molecule called spiropyran, which changes from yellow to purple in response to mechanical stress. The “bruise” remains for 2-5 hours before fading away, which will help prosthetic users identify and avoid sources of damage. 

New food packaging & processing solutions, all at PACK EXPO in Chicago
Experience the cutting edge of food packaging and processing innovation at PACK EXPO International this November. See machinery and equipment in action, discover new technologies, and learn sustainable solutions from experts, all in one place.
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New food packaging & processing solutions, all at PACK EXPO in Chicago
Explore new technology from hundreds of life sciences suppliers.
At PACK EXPO International, you’ll find innovations from hundreds of exhibitors that specialize in pharmaceuticals, biologics, nutraceuticals, medical devices and more. No other show delivers as many solutions to keep your products safe and effective.
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Explore new technology from hundreds of life sciences suppliers.