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‘Seashell’ Glass Might Be The Secret Ingredient For Unbreakable Phone Screens

By Mikelle Leow, 29 Sep 2021

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Photo 24975394 © Stephan Pietzko | Dreamstime.com

These days, mobile phones aren’t quite as klutz-proof as the trusty Nokia 3310, but a team of scientists from McGill University in Montreal might have, ahem, cracked the code for glass that’s much less likely to shatter, all while staying transparent.

Interestingly, the team looked to “nature as master of design,” drawing inspiration from none other than seashells. Their beautiful iridescent layer on the inside—called the nacre or mother-of-pearl—is what keeps them so rigid.


The microstructure of the new material (left) VS that of mother-of-pearl (right). Image via McGill University

As detailed by New Atlas, mother-of-pearl’s structure is microscopically similar to brickwork. It’s made up of calcium carbonate platelets laid out in softer, elastic biopolymer formations, which strengthen mollusk shells’ structural integrity while preventing cracks.

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After mimicking the natural structures with a combination of hardy glass flakes and flexible acrylic, Allen Ehrlicher, an Associate Professor in the Department of Bioengineering at McGill University, said that the resulting material “is not only three times stronger than the normal glass, but also more than five times more fracture-resistant.”

For the transparency element, they altered the refractive index of the acrylic to an amount similar to glass, ultimately inventing glass that was stronger, tougher, and clear, and finding a fix for arguably the most volatile part of smartphone hardware.

Notably, the process in creating seashell-inspired glass is said to be scalable, opening up opportunities for tech giants to finally build smartphones with practically unbreakable displays.



[via New Atlas, images via various sources]
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