The Investigation Of Structural, Mechanical, Electronic And Optical Properties Of Zno And Cdo Nanotubes Usuing Ab Initio Method

In this study, the structural, mechanical, electronic, and optical roperties of arm-chair (n,n; n=3-9) and ziqzaq (n,0; n=3-12) ZnO and CdO nanotubes were calculated from ab-initio methods based on Density functional theory (DFT) by using GGA approach. Following optimization process, some physical parameters of tubes such as their bond length, bond angle, band gap, strain energy and Young module were calculated. The e changes of these parameters with respect to the tube radius were also investigated. Moreoever, the dielectric functions, energy-loss function, absorption coefficient and refractive indexes were calculated and interpreted. In the optical calculations, the electric field polarizations perpendicular and parallel to the tube axis were taken into account. The obtained results were compared with the available experimental and theoretical studies in the literature.