Breakthrough in carbon nanotube growth: unique alloy nanocatalysts lead to the chirality specified tubes
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摘要:
Since Dr.Iijima reported his observation of tubular carbon under transmission electron microscopy (TEM) in 1991,carbon nanotubes (CNTs) have attracted intensive attention.A single-walled CNT (SWNT) is a seamless cylinder formed by rolling a piece of graphene,the honeycombstructured sp2 carbon.This unique structure endows SWNTs with amazing properties and great potentials in various fields.However,many of the advanced applications (e.g.,nanoelectronics and optoelectronics) require SWNTs of identical structure or chirality.Structure/chirality-specific growth,the ultimate goal in SWNT preparation,has been the most challenging topic in the field since the mid-1990s.