any way you burn carbon, you can make nanotubes.
Are made naturally with natural combustion of carbon, but we simply didn't know about them before

Nanotubes are almost to the scale of quantum mechanics

quantum confinement, how materials behave on those really small scales, is really important to nanotechnology

Laser vaporization: fire laser at graphite target with some metal.

Result is purified - boiling in acid (handles metal), burning (deals with soft carbon)


Electrical conductivity resistance of carbon nanotubes does not increase with temperature, whereas resistance of regular metals does