‘Fullertubes’ Join the Family of Carbon Crystals

Carbon can arrange itself into one of the hardest materials in nature, or into one so soft that children inscribe trails of it on paper. Several decades ago, scientists started wondering: Aside from diamond and graphite, what other crystalline forms might carbon take? In 1985, they had their first answer. A group of chemists discovered little hollow spheres constructed of 60 carbon atoms that they…

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