Published online by Cambridge University Press: 25 February 2011
We have developed an automatic computational method for generating graphitic carbon structures. We propose models for crystalline and amorphous forms of carbon consisting of a single negatively curved graphitic sheet forming an extended structure. Stability and elastic properties are computed using an energy estimate fit to local density approximation(LDA) calculations. These forms of carbon are found to be more stable than C60. The radial distribution function for the random structures closely matches that of films of amorphous carbon grown on NaCI substrates from sublimated graphite.