Graphitic and Inorganic Low-dimensional Nanostructures

Quasi one-dimensional (carbon and inorganic nanowires, nanotubes, nanoribons, etc.) and quasi two-dimensional (graphene, and oxide films on aluminum, zinc, titanium and tantalum) nanostructures will be investigated theoretically and experimentally, and some of them synthesized. Full symmetry implementation in quantum ab initio calculation (within permanently improving code POLSym), gives quantum states and energy bands assigned by the complete set of conserved quantum numbers. This enables to study a number of processes and properties of nanostructures important for nanoscience and nanotechnology: quantum transport, luminescence, polarizability, Raman spectra, spin-orbit interaction, diffraction images, etc. Simultaneously, combined nanolithography and electrochemistry techniques of growing porous films and deposition of the nanowires within them will be developed. In particular, this includes atomic force microscope nanoindentation, local electrochemical deposition and multiple anodization. Growth on a confined part of the sample treated by scanning probe microscope nanolitography will be studied, together with morphological effects on the boundary with nonmodified area. Dependence of the optical and luminescence properties of symmetry and ordering of nanopores and deposited nanostructures will be explained. In order to get basic nanoelectronic circuits, junctions in nanostructures of predefined symmetry and ordering will be made in a controllable way.