Carbon nanotubes, the tiny hollow tube of hexagonal
carbon lattices has been touted as one of the most promising
materials for building items with fascinating electrical, thermal
and mechanical properties. Selective functionality is realized by
adding elements to the carbon nanotubes to make transistors,
composite additives, field emitters and transparent conductive
films. Carbon nanotubes doped with boron make the structure of the
tubes more functional while increasing the ability to modulate the
electrical properties. Boron-doping into coaxially aligned two
single-walled carbon nanotubes (double-walled carbon nanotubes:
DWNTs) show promise for use in electronic devices, composite
materials, energy storage and power generation
materials.
Outer tube-selectively boron-doped double-walled carbon
nanotubes for thermoelectric applications

