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The following topics are dealt with: microstructure; nanostructure; radio system; television system; radiolocation; telecommunications; sonic device; ultrasonic device; physics; electronics; optical device; thermal device; power electronics; mechatronics; and automation.
Electron paramagnetic resonance and spin echo methods are used to probe the spin dynamics in two-dimensional quantum dot (QD) arrays with different shape of nanoclusters. Two types of QD structures were investigated: 1) with single shaped QDs (hut-clusters having the ratio of height h to lateral size l, h/l = 0.1), and 2) with two groups of QDs, hut- and dome-clusters (h/l = 0.2). Both types of structures...
It is shown that Stranski-Krastanov transition, i. e. the change of the growth mode from 2D to 3D in the formation of InAs quantum dots on (001) GaAs is actually a two-dimensional phase transition in the lattice-gas model. The density of lattice gas in quantum dots ensemble changes abruptly from low to high value corresponding to the liquid of quantum dots. The lateral interaction has a decisive role...
The paper represents dependences of electrical resistance on irradiance and temperature for composite fullerene-WO3 films. It has been shown that the structure film-contacts is more sensitive to external influence when the film is placed between contacts. Dependencies of fullerene doped B2O3 films permittivity on temperature and humidity are given. Introduction of fullerenes results in approximately...
The results of an experimental study of the kinetics of photocurrent rise in PbSnTe:In films exposed at T=4.2 K to free-electron laser radiation of wavelengths 68, 123, and 205 μm are reported. The obtained data are analyzed within the model of space-charge-limited injection currents that flow in a material with electron traps.
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