Mazilov O. High-field formation of needle nanoemitters at low temperatures

Object: field needle emitters of ions and electrons. The purpose: the determination of physical laws of formation of atomic topography of solids in high electric fields and increase of efficiency of the high-field surface treatments of needle nanoemitters at low temperatures. Methods: computer modelling of electric fields, mathematical modelling of interfaces in reciprocal space by method of a molecular static, method of molecular dynamics, the field electronic microscopy, transmission electron microscopy and low-temperature field ion microscopy. Results: For the first time enhancement factors for an electric field above a surface of nanoemitters with complex multilevel configurations are calculated, trajectories of the charged particles in such fields are calculated. It is established, that at formation of a surface of solids by high electric fields, shielding a surface by the spatial electric charge created by positively charged ions occurred. For the first time in view of the shielding by a spatial charge, the limiting mechanical stresses at nanoobjects are determined. Field of application: physics of solid state, nanophysics