Technical Note:

1. Arc-produced, multi-walled carbon nanotubes contain 55 65 wt% nanotubes and 35 - 45wt% graphite nanoparticles. The

tubes have a diameter distribution of 2-50 nm, and a typical length of >2 microns (straight tubes). The chemical composition is 100% carbon, with no metal impurities. Because the nanotubes are grown at very high temperatures (3000-4000C), the product contain far less defects than nanotubes produced by other methods. The nanotubes are stable in air up to 700"C.