As worn by "Dr. Sheldon Cooper" (Jim Parsons) on "The Big Bang Theory" in more than a dozen episodes and TV ad promos. Carbon allotropes, these cylindrical nanomolecules have extraordinary strength with graphite-like orbital sp3 bonds similar to diamonds, and fullerene, closed hemisphere structure. The tubes merge/align together producing linked, heat-conducting wires useful in nanotech, electronics and optics.
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