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Keywords:

  • Carbon nanotubes, single-walled;
  • Chemical vapor deposition;
  • Nanoelectronics;
  • Nanostructures

Graphical Abstract

Thumbnail image of graphical abstract

Rings of bundled single-walled carbon nanotubes with perfectly toroidal geometries (see figure), are fabricated in high yields by a floating chemical vapor deposition process involving the thermal decomposition of acetylene. The nanotube rings can be grown with varying densities on a wide variety of substrates at relatively low temperatures, which is a significant advantage for nanoelectronics applications.