Nanoscience and Nanotechnology : Nanostructured Materials Application and Innovation Transfer

The electronic band structure and the dielectric function of single-walled carbon nanotubes (SWNTs) are studied within all-valence non-orthogonal tight-binding model. The helical symmetry of the nanotubes is explicitly accounted for in the model, which allows for a significant reduction of the computational time. Calculation of the band structure for all 48 SWNTs with radii between 2A and 5A is carried out. The dielectric function for the same nanotube types is calculated in the random phase approximation for energies up to 6 eV and the optical transition energies are derived. The latter data can be used for nanotube characterization in optical adsorption experiments and for determination of the nanotube types, for which the Raman light scattering from phonons is resonant.Balabanova, E. is the author of 'Nanoscience and Nanotechnology : Nanostructured Materials Application and Innovation Transfer', published 2004 under ISBN 9789545801600 and ISBN 9545801603.