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1 .This is Scientific American 60-Second Science. I'm Christopher Intagliata. Got a minute?
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2 .A cracked smartphone screen's no good.
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3 .But future phones may be sold with cracks built in,
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4 .because a network of tiny cracks can actually toughen up a piece of glass.
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5 .The crack research team borrowed the concept from mother-of-pearl, the iridescent stuff in abalone shells.
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6 .It's 3000 times stronger than the mineral it's made of, due to its jigsawlike construction.
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7 .Using a 3-D laser engraver, the tool used to make those glass trophies with a logo floating inside,
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8 .the researchers carved cracks a few microns wide into glass slides, and filled the cracks with polyurethane.
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9 .The resulting glass was 200 times tougher, because the microcracks dissipate energy, preventing larger cracks.
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10 .The study is in the journal Nature Communications.
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11 .The cracks in this study are visible, so, not suitable for a smartphone screen.
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12 .But the researchers say it's possible to shrink them down to less than a micron wide, an imperceptible size.
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13 .As to whether crack-proof screens are a good business model, well, how much are you willing to shell out for an unbreakable phone?
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14 .Thanks for the minute, for Scientific American 60-Second Science. I'm Christopher Intagliata.
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