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At one atom thick, graphene is said to be the thinnest and strongest material recorded [Getty Images] Graphene was discovered in Manchester 20 years ago but is yet to make its mark commercially.
A material is also considered hard if it resists plastic deformation. If a material has short covalent bonds, atomic dislocations that lead to plastic deformation are less likely to occur than in materials with longer, delocalized bonds. If a material contains many delocalized bonds it is likely to be soft. [10]
Graphene is known for its exceptionally high tensile strength, electrical conductivity, transparency, and being the thinnest two-dimensional material in the world. [4] Despite the nearly transparent nature of a single graphene sheet, graphite (formed from stacked layers of graphene) appears black because it absorbs all visible light wavelengths.
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Limpet teeth have beaten out the previous record-holder for the strongest biological material found in nature: spider silk. Researchers found the limpets' teeth contain goethite, which is a hard ...