Sustained Growth of Ultralong Carbon Nanotube Arrays for Fiber Spinning


  • This work was supported by the Laboratory Directed Research and Development program office of Los Alamos National Laboratory. We thank Dr. Yi Tu (CVD-First Nano company) for helpful discussions. Supporting Information is available online from Wiley InterScience or from the author.


Arrays of well-aligned, ca. 4.7 mm long carbon nanotubes (CNTs) are grown in a simple, safe, and cost-effective manner using an efficient Al2O3/Fe catalyst prepared by an ion-beam assisted deposition technique (see figure). Importantly, the as-synthesized CNT arrays with lengths ranging from 500 μm to 1.5 mm are conducive to spinning, and CNT fibers spun from such long CNT arrays show remarkably improved tensile strength.

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