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Keywords:

  • Arrays;
  • Carbon nanotubes;
  • Chemical vapor deposition;
  • Fibers;
  • Structure–property relationships
Thumbnail image of graphical abstract

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.