We demonstrate the possibility of determining a large group of physical properties of DLC films using only one group of methods based on X-ray interference studies. These include methods for determination of the film thickness, material density and roughness of the surface. We present the analysis of possibilities to use the method of the two-crystal X-ray spectrometer to evaluate internal stress and to deduce the modules of elasticity and thermal expansion coefficients of the film. It is shown that this method can be used for the in-situ control jf the film parameters during the film deposition in the technological chamber.
The characteristics of RAP crystal, metal-carbon multilayer X-ray mirror and diamond-like carbon (DLC) X-ray mirror are compared/ The advantages of DLC mirrors in resolution power are described. Temperature and radiation influence on the reflectivity and bandwidth of Bragg peak for diamond-like mirrors are studied. It is shown that the parameters of DLC mirrors after annealing in vacuum are stable up to 570 C.
Analysis of the contribution of electron scattering on phonons, longitudinal and flexural resistance in the nanotube in a longitudinal magnetic field has been carried out quantitatively. The dependence of the conductance of the nanostructure on the nanotube radius, surface electron density, temperature, and Aharonov–Bohm parameter in the case of an isotropic phonon spectrum and taking into account the effects of phonons confinement has been studied.
Formation of carbon nanoparticles is an important type of complex non-equilibrium processes that require precise atomistic theoretical understanding. In this work, we consider the process of ultrafast cooling of pure carbon gas that results in nucleation of an onion-like fullerene. The model is based on molecular dynamics simulation with the interaction between carbon atoms described via a reactive ReaxFF model. We study the consecutive stages of fullerene-like nanoparticle formation and identify the corresponding temperature ranges. Analysis of hybridization and graphitization reveals the underlying microscopic mechanisms connected with rearrangements of dihedral angles and density changes.