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Shark Skin Inspired Plastic Wrap Fends Off Germs In Hospitals #Biomimicry

Sharklet™ surface texture AskNature

Shark Skin Inspired Plastic Wrap Fends Off Germs In Hospitals via Mental Floss

Hospitals are constantly worried about germs. No matter how often doctors and nurses wash their hands, they inadvertently spread bacteria and viruses from one patient to the next. In fact, as many as 100,000 Americans die each year from infections they pick up in hospitals. Sharks, however, have managed to stay squeaky clean for more than 100 million years. And now, thanks to them, infections may go the way of the dinosaur.

Unlike other large marine creatures, sharks don’t collect slime, algae, or barnacles on their bodies. That phenomenon intrigued engineer Tony Brennan, who was trying to design a better barnacle-preventative coating for Navy ships when he learned about it in 2003. Investigating the skin further, he discovered that a shark’s entire body is covered in miniature, bumpy scales, like a carpet of tiny teeth. Algae and barnacles can’t grasp hold, and for that matter, neither can troublesome bacteria such as E. coli and Staphylococcus aureus.

Brennan’s research inspired a company called Sharklet, which began exploring how to use the sharkskin concept to make a coating that repels germs. Today, the firm produces a sharkskin-inspired plastic wrap that’s currently being tested on hospital surfaces that get touched the most (light switches, monitors, handles). So far, it seems to be successfully fending off germs. The company already has even bigger plans; Sharklet’s next project is to create a plastic wrap that covers another common source of infections—the catheter.

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