There is no consensus on some terms describing carbon nanotubes in scientific literature: both "- wall " and "- walled " are being used in combination with " single ", " double ", " triple " or " multi ", and the letter C is often omitted in the abbreviation ; for example, multi-walled carbon nanotube ( MWNT ).

A scanning tunneling microscopy image of single-walled carbon nanotube

A transmission electron microscopy image of a single-walled carbon nanotube

SWNTs are an important variety of carbon nanotube because most of their properties change significantly with the ( n, m ) values, and this dependence is non-monotonic ( see Kataura plot ).

In theory, a nanotorus is a carbon nanotube bent into a torus ( doughnut shape ).

In this new material, fullerene-like " buds " are covalently bonded to the outer sidewalls of the underlying carbon nanotube.

Construction of a high temperature proton exchange membrane fuel cell | PEMFC: Bipolar plate as electrode with in-milled gas channel structure, fabricated from conductive composite material | composite s ( enhanced with graphite, carbon black, carbon fiber, and / or carbon nanotube s for more conductivity ); Porous carbon papers ; reactive layer, usually on the polymer membrane applied ; polymer membrane. Condensation of water produced by a PEMFC on the air channel wall.

Following nearly a decade's worth of research into the formation of alternate fullerene compounds ( e. g. C < sub > 28 </ sub >, C < sub > 70 </ sub >), as well as the synthesis of endohedral metallofullerenes ( M @ C < sub > 60 </ sub >), reports of the identification of carbon nanotube structures led Smalley to begin investigating the iron-catalyzed synthesis of carbon nanotubes.

Smalley's latest research was focused on carbon nanotubes, specifically focusing on the chemical synthesis side of nanotube research.

An STM image of a single-walled carbon nanotube

However, recent concepts for a space elevator are notable for their plans to use carbon nanotube or boron nitride nanotube based materials as the tensile element in the tether design.

The latest developments in carbon nanotube technology bring the orbital elevator closer to possible realisation.

Because of the long-standing usage of the term " unobtainium " within the space elevator research community to describe a material with the necessary characteristics, LiftPort Group President Michael Laine has advocated assigning the term as the generic name for cables woven of carbon nanotube fibers, which seem to satisfy the requirements for this application.

Additionally, other transparent conducting materials, such as carbon nanotube coatings or PEDOT can be used as the front electrode.

* Carbon nanotube, an allotrope of carbon with a cylindrical nanostructure

# REDIRECT carbon nanotube

In 2008, large format carbon nanotube sheets began being produced at Nanocomp.

A number of more esoteric devices have been proposed, including Nano-RAM based on carbon nanotube technology, but these are currently far from commercialization.