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Researchers claim they've manufactured the world's first non-cuttable material — with a mere 15% steel's density — which they say could be made into a lightweight armor or indestructible bike lock, according to a paper recently published in the journal Scientific Reports.

Named Proteus, the new material consists of ceramic spheres arranged in a cellular aluminum structure to resist angle grinders, drills, or similar brute-force cutting tools. Stemming from the U.K's Durham University and Germany's Fraunhofer Institute, the novel material takes inspiration from the durable and cellular skin of grapefruit, in addition to the rock-hard, fracture-resistant aragonite shells of mollusks.

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Category: Science