title: Nanotube
text: # Nanotube
  
  A nanotube is a nanometer-scale hollow tube-like structure.
  
  ## Kinds of nanotubes
  
  * BCN nanotube, composed of comparable amounts of boron, carbon, and nitrogen atoms
  * Boron nitride nanotube, a polymorph of boron nitride
  * Carbon nanotube, includes general nanotube terminology and diagrams
  * DNA nanotube, a two-dimensional lattice which curves back upon itself, somewhat similar in size and shape to a carbon nanotube
  * Gallium nitride nanotube, a nanotube of gallium nitride
  * Silicon nanotube, made of silicon atoms
  * Non-carbon nanotube, especially tungsten(IV) sulfide nanotubes
  * Tunneling nanotube, a tubular membrane connection between cells
  * Titanium nanotubes, created by the conversion of the mineral anatase by hydrothermal synthesis
  