Conical, helically wound, graphite whiskers: a limiting member of the “fullerenes”?

摘要: Abstract Conically structured columnar graphite crystals have been studied by electron microscopy and diffraction a formation mechanism is proposed explaining their shape unusual effects consisting in periodically interrupted circular ring patterns. A growth whereby the initial layer adopts slitted dome shaped configuration introducing fivefold carbon sixfold network. Successive sheets are rotated with respect to previous one over constant angle, thus realizing helical cone around “disclination” core. This model explains morphological features particular observed on these reproducibly prepared crystals. The has direct relationship of fullerene “bucky ball” molecules.