Carbon Nanotubes


Carbon Nanotube (CNT): nanotube composed of carbon. Note: CNTs usually consist of curved graphene layers (ISO/TS 80004-3:2010):

  • Single-Wall Carbon Nanotube (SWCNT/SWNT): carbon nanotube consisting of a single cylindrical graphene layer.
  • Multiwall Carbon Nanotube (MWCNT/MWNT): carbon nanotube composed of nested, concentric or near-concentric graphene sheets with interlayer distances similar to those of graphite. Note: The structure is normally considered to be many single-wall carbon nanotubes nesting each other, and would be cylindrical for small diameters but tends to have a polygonal cross-section as the diameter increases.    
  • Double-Wall Carbon Nanotube (DWCNT/DWNT): multiwall carbon nanotube composed of only two nested, concentric single-wall carbon nanotubes. Note: Although this is a type of multiwall carbon nanotube, its properties are rather closer to single-wall carbon nanotubes.
Manufacturing Methods: 
  • Arc Discharge
  • Laser Ablation
  • Chemical Vapor Deposition (CVD)
  • HiPco: SWNT
  • Flame Synthesis