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[en] In connection with the development of nanotechnology in the last 15—20 years, the method of molecular layering (ML), created in the middle of the last century in the USSR, has attracted increasing attention. The features of structural-dimensional effects in the products obtained by new chemical nanotechnology and promising directions of their practical application in "core—nanoshell" compositions are considered in the review. In accordance with the synthetic capabilities of the ML method, the functional properties of the "core—nanoshell" type materials are affected by the "monolayer effect" and the substrate shielding effect, as well as the multicomponent nature of the system, and mutual structural coordination effect of the substrate and the build-up nanolayer. The review presents theoretical and experimental data on the application of the observed effects in the creation of shell pigments and fillers, modified sorbents, catalytic membrane reactors, nanodoped ceramic materials, polymers, quartz fibers with adjustable optical characteristics, electrets, etc.
[en] Penetration of vortices into a current-carrying superconducting film is observed for the first time. The distribution of the transport current over the width of the specimen and temperature distribution in the vicinity of the resistive domains are reconstructed experimentally
[en] Based on the Scalapino-Huberman μ* model, the possibility of temporally oscillating structures appearing in a superconducting film under high quasiparticle injection is discussed. The range of parameters in which these structures may occur is also given
[en] Coalescence and impingement, which in the time domain give rise to completely different kinetics for the density of islands, are shown to lead to common kinetics in the domain of the fraction of covered surface in the case of thin-film growth after simultaneous nucleation. This result allows one to treat the more involved intermediate case (partial coalescence) in a rather straightforward way. On this basis experimental data taken from the literature are discussed and reanalyzed in order to evaluate the saturation density of the nuclei
[en] We study analytically and numerically the interaction of vortices in current-carrying narrow superconducting strips. The characteristic time of vortex-antivortex pair annihilation and the energetic losses in the strip are evaluated as a function of the external transport current and width of the strip. The effects of an external magnetic field on the motion of a single vortex are discussed
[en] Micromechanical structures designed for material characterization through analysis of their nonlinear dynamic response are presented. The structures consist of a rigid movable mass supported by beams which are attached to the wafer substrate. The structures are designed so that they are geometrically constrained, which is the source of their nonlinearity. The nonlinearity is shown to be well modeled by Duffing's equation for a stiffening spring and it is this model which is used to fit the test data to the desired mechanical properties, namely Young's modulus, intrinsic stress and damping
[en] Explicit expressions are given for the current I(y,z) in a flat superconductor when the magnetic field Hx(y,z) perpendicular to its surface is measured, e.g., by the Faraday effect in a thin europium selenide layer evaporated on the specimen surface. The analytical results for a long flat strip are particularly instructive, showing what type of singularities occurs in the current and field. The general solution for the current in flat conductors of arbitrary shape is given in form of an integral over Hx(y,z) times an integral kernel that follows from an iteration
[en] We derive a first-principles method of determining the van der Waals or Casimir pressure in a dissipative and dispersive planar multilayered system by calculating the Maxwell stress tensor in a fictitious layer of vacuum, that is eventually made to vanish, introduced in the structure. This is illustrated by calculating the van der Waals pressure in a thin film with dissipative properties embedded between two semi-infinite media.
[en] Reflective surfaces are one of the key elements of solar plants to concentrate energy in the receivers of solar thermal electricity plants. Polymeric substrates are being considered as an alternative to the widely used glass mirrors due to their intrinsic and processing advantages, but optimizing both the reflectance and the physical stability of polymeric mirrors still poses technological difficulties. In this work, polymeric surfaces have been functionalized with ceramic thin-films by atomic layer deposition. The characterization and optimization of the parameters involved in the process resulted in surfaces with a reflection index of 97%, turning polymers into a real alternative to glass substrates. The solution we present here can be easily applied in further technological areas where seemingly incompatible combinations of polymeric substrates and ceramic coatings occur