Optimization Problem of Thermal Field on Surface of Revolving Susceptor in Vapor-Phase Epitaxy Reactor

Abstract

The use of such semiconductors allows obtaining full-color RGB light sources, increasing record density of a digital data storage device, getting high-capacity and efficient sources of white light. Electronic properties of such semi-conductors allow using them as a basis for high-power and high-frequency transistors and other electronic devices, the specifications of which are competitive with those of SiC-based devices. Only since 2000, the technology of cultivation of crystals III-N of group has come to the level of wide recognition by both abstract science, and the industry that has led to the creation of the multi-billion dollar market. And this is despite a rather low level of development of the production technology of devices on the basis of III-N of materials. The progress that has happened in the last decade requires the solution of the main problem, constraining further development of this technology today -ensuring cultivation of III-N structures of necessary quality. For this purpose, it is necessary to solve problems of the analysis and optimization of processes in installations of epitaxial growth, and, as a result, optimization of its constructions.

Principles of using modern IT trends in maritime shipping

“…Knowledge of the location will always allow tracking the entire route of the cargo. [6] The scheme of interaction is shown below. Such developments are already being implemented by CMA CGM in its work cycle.…”

Evaluation and Procedure for Estimation of Interharmonics on the Example of Non-Sinusoidal Current of an Induction Motor With Variable Periodic Load

“…Based on the generalization of the best practices of international organizations involved in the regulation and modeling of non-sinusoidal processes with frequencies that are not multiples of the base one, the paper [3] defines a range of problems in the section of power quality indicators, which include malfunction of devices and control systems. One of the sources of interharmonics according to [4] can be electric motors. Harmonics arise from gaps between the metal in the rotor and stator, especially when the magnetic circuit is saturated (so-called gap harmonics).…”