Carbon Nanotubes

Definition

Carbon in its elemental form is one of the softest (graphite) and hardest (diamond) materials found in nature. Applications for graphitic carbon include in lubricant formulations and as the replacement for lead in pencils. Diamond has numerous industrial applications due to its extreme hardness and resistance to heat and pressure. Graphene is a nanoscale ultra thin film or foil with thicknesses as small as 1 nanometer which can be produced from either silicon carbide or graphite flake processing. These include in drill bits and grinding media and grinding equipment. Carbon also finds application in steel alloys, in various filtering and purification technologies and as a neutron moderator in nuclear power plants. Carbon is available as a nanoparticle and in single-walled, double-walled and multi-walled nanotubes with purities from 99% to 99.999% ( ultra-high purity ).

Behaviours

Formula C

Atomic Number 6

Molecular Weight 12.0107(8) g.mol ^-1

Electronegativity (Pauling) 2.55

Density 2.267 g.cm^-3 at 20 °C

Melting Point 4027-4427 °C

Boiling Point 3727 °C

Vanderwaals radius 170.pm

Ionic radius 0.05 nm

Energy of first ionization 1086.46 kJ.mol^-1

Applications

Products

Carbon Chopped Fiber

Carbon Fiber

Carbon Fabric

Carbon Foam

Carbon Nanohorns

Carbon Nanoparticles

Carbon Nanorods

Carbon Nanotubes

Graphite, Natural Flake

Graphite, Micronized

Graphite, Expandable

Graphite, Spherical

Graphite, Natural Amorphous

Boron Carbide

Boron Carbide Nanoparticles

Silicon Carbide

Silicon Carbide Nanoparticles

Tungsten Carbide

Tungsten Carbide Nanoparticles

Graphene

Carbon Disulfide Solution

Carbon Tetrachloride

Carbonyl Sulfide

Tetraiodomethane

http://www.americanelements.com/cc.html

The use of carbon nanotubes for televisions of the future will be the death knell for LCD and plasma screens. Nanotubes are elongated structures one thousand times finer than a human hair, which emit electrons from either end when placed in an electric field. Cathode screens currently feature this electron-emission phenomenon; in the future, nano-components will make it possible to achieve extreme miniaturization easily and relatively inexpensively, thus revolutionizing- while becoming an integral part of – our day-to-day lives. In addition to television, carbon nanotubes target a wide range of applications, including composite materials, high-tech fibres and electrodes for fuel cells and artificial muscles.

Reference:

compiled by materio. Material World 2: Innovative Materials for Architecture and Design. Amsterdam: Frame Publishers, 2006.