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  2. Graphene - Wikipedia

    en.wikipedia.org/wiki/Graphene

    The rapid fall of resistivity when carriers are injected shows their high mobility, here of the order of 5000 cm 2 /Vs. n-Si/SiO 2 substrate, T=1K. [2] Graphene exhibits high electron mobility at room temperature, with values reported in excess of 15 000 cm 2 ⋅V −1 ⋅s −1. [2] Hole and electron mobilities are nearly identical. [73]

  3. Mechanical properties of carbon nanotubes - Wikipedia

    en.wikipedia.org/wiki/Mechanical_properties_of...

    Carbon nanotubes (CNTs) are long hollow cylinders of graphene. Although graphene sheets have 2D symmetry, carbon nanotubes by geometry have different properties in axial and radial directions. It has been shown that CNTs are very strong in the axial direction. [1]

  4. Fullerene - Wikipedia

    en.wikipedia.org/wiki/Fullerene

    Fullerenes had been predicted for some time, but only after their accidental synthesis in 1985 were they detected in nature [3] [4] and outer space. [5] [6] The discovery of fullerenes greatly expanded the number of known allotropes of carbon, which had previously been limited to graphite, diamond, and amorphous carbon such as soot and charcoal.

  5. Allotropes of carbon - Wikipedia

    en.wikipedia.org/wiki/Allotropes_of_carbon

    Phagraphene: Graphene-like allotrope with distorted Dirac cones. Prismane C 8 is a theoretically predicted metastable carbon allotrope comprising an atomic cluster of eight carbon atoms, with the shape of an elongated triangular bipyramid —a six-atom triangular prism with two more atoms above and below its bases.

  6. Electronic properties of graphene - Wikipedia

    en.wikipedia.org/wiki/Electronic_properties_of...

    Graphene doped with various gaseous species (both acceptors and donors) can be returned to an undoped state by gentle heating in vacuum. [22] [24] Even for dopant concentrations in excess of 10 12 cm −2 carrier mobility exhibits no observable change. [24] Graphene doped with potassium in ultra-high vacuum at low temperature can reduce ...

  7. Potential applications of carbon nanotubes - Wikipedia

    en.wikipedia.org/wiki/Potential_applications_of...

    Researchers from Rice University and State University of New York – Stony Brook have shown that the addition of low weight % of carbon nanotubes can lead to significant improvements in the mechanical properties of biodegradable polymeric nanocomposites for applications in tissue engineering including bone, [6] [7] [8] cartilage, [9] muscle [10] and nerve tissue.

  8. Contorted aromatics - Wikipedia

    en.wikipedia.org/wiki/Contorted_aromatics

    Both graphene and fullerene bear resemblance in having sp 2 hybridized carbons; however, exhibit different geometries (allotropes of carbon). The fact that fullerenes have five-membered rings incorporated among six-membered rings, makes them spherical whereas graphene remains planar [ 3 ] due to the presence of exclusively all six-membered ...

  9. Fullerene chemistry - Wikipedia

    en.wikipedia.org/wiki/Fullerene_chemistry

    Fullerene or C 60 is soccer-ball-shaped or I h with 12 pentagons and 20 hexagons. According to Euler's theorem these 12 pentagons are required for closure of the carbon network consisting of n hexagons and C 60 is the first stable fullerene because it is the smallest possible to obey this rule.