Specificity of Antireflective Coatings at Oblique Incidence of Light

The optical characteristics of a single-layer and double-layer antireflection coating for different substrates are considered. Methods of simultaneous blooming of s - and p - polarization component of light are shown. The refractive index and thickness of the layers necessary for blooming the substrates with a given refractive index at an arbitrary angle of light incidence are determined. The urgency of the task of creating new optical materials with low refractive index is shown. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3536

Simulation of Broadband Antireflection Coatings at Oblique Incidence of Light

The results of simulation of optical characteristics of antireflection coatings with continuously changing refractive index are presented. The features of enlightenment at oblique light incidence are considered. The possibilities for the simultaneous enlightenment of S- and P- polarization component of the incident light are investigated

Innovation-marketing enterprise development of innovation-market orientation: basic principles and modelling aspects

The aim of the article. The study is devoted to the solution of the urgent scientific and other problems the development of enterprises in the global economy and the development of the theoretical and methodological aspects of innovative management and marketing of the enterprise development innovation and market orientation on the basis of formation of the system principles of innovative development, marketing management within the processes of globalization. The results of the analysis. It is revealed that one of the main problems for modern Ukrainian enterprises is the preservation of competitiveness and the maintenance of business activity in the conditions of the external environment which is continuously changing. It is shown that the economy of the country which wants to develop in the conditions of innovative orientation and increase of the level of motivation in organizational innovation are the main reason to secure enterprises the conditions for the implementation of innovation-marketing orientation, especially in the framework of international commodity markets. It is proved that the company has the influence on the nonlinear nature for the development of the components of open socio-economic systems. It is revealed that in its activity the enterprise has a high degree of dynamism and variability of the external environment, which contributes to the emergence of new laws for the development and control of nonlinear dissipative media. Also, in the global economy within the geo-space there is a place for ‘the presence of co-evolutional effects”. In the study we have got the characteristic of cases within the framework of the need for innovation-marketing development of the enterprise. The substantive aspects of the strategic approach, which are specified in the principles system of the innovative development management of the enterprise-marketing orientation in the global economy are considered. It is found that formation of the goals and objectives of the overall development of the enterprise within the geo-space is influenced by three components: the fluctuations of the global economy, fluctuations in the national and regional economy, as well as the limitation of the internal environment of the enterprise. The scheme of elements interrelation of the enterprise development management system, has sub-systems: a control subsystem (a division of innovative marketing development); the controlled system (a general tool for managing the overall development); service subsystem (Department of Finance and Investment Development). Conclusions and directions of further researches. Thus, based on the research of the main trends and characteristics at the present stage of transformation of the enterprises economic activity it is proposed to improve the approach to the methodology of management of the enterprise innovation-marketing orientation overall development, which is one of the theoretical and practical tools for improving strategic competitiveness by understanding and modeling features of nonlinear economic processes in geo-economic space

New Aspects of Design of Wide-Band Interference Coatings Based on Six-Layer Period

The paper proposes new approach top the design of wide-band interference filters with suppression adjacent stop-bands. The method of research of the multi-layered interference system, allowing to find the necessary of refractive indices of layers, is presented. The results described in communication open new possibilities for construction and calculation of devices based on thin film materials. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3545

Design of Broadband Optical Interference Filters Based on Six-Layer Period

The paper proposes new approach top the design of wide-band interference filters with suppression adjacent stop-bands. The method of research of the multi-layered interference system, allowing to find the necessary of refractive indices of layers, is presented. The results described in communication open new possibilities for construction and calculation of devices based on thin film materials. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3095

Simulation of Broadband Antireflection Coatings at Oblique Incidence of Light

The results of simulation of optical characteristics of antireflection coatings with continuously changing refractive index are presented. The features of enlightenment at oblique light incidence are considered. The possibilities for the simultaneous enlightenment of S- and P- polarization component of the incident light are investigated

Influence of Deuterium Ion Implantation on the Structure and Hardness of Nanocrystalline Films

Titanium nitride based coatings are very attractive for protection of materials in extreme conditions. However, their behavior under different kinds of irradiation is not entirely well understood. In this work, the influence of ion-implanted deuterium on changes of the structure and mechanical properties TiZrN, TiAlSiN, TiAlYN films were investigated. Films were deposited by filtered vacuum arc plasma technique. After deposition all films were irradiated at room temperature with 12 keV D+ ions to dose 1 1018 D/cm2. Composition, structure and nanohardness of the coatings were determined by X-ray fluorescence method, X-ray diffraction and nanoindentation. The effusion of the implanted deuterium was studied by thermal desorption spectroscopy. It is shown that irradiation by deuterium ions does not make structural changes in multicomponent films. Deuterium thermal desorption spectrum of various coatings are substantially different. Nanohardness of all investigated coatings after irradiation and thermal desorption are decreased. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3545

Effects of Concentration Titanium on Threshold Character of Deuterium Desorption Temperature Range from Mg-based Composites

The plasma evaporation-sputtering method was applied to make composite materials of the Mg-Ti system. The ion-implanted deuterium desorption temperature variations as a function of the component concentration were studied. It has been established that, by introducing titanium into magnesium, the deuterium desorption temperature can be appreciably decreased (to 400-450 K) in comparison with the case of deuterium desorption from magnesium ( 800 K). A step-like shape of the curve of deuterium desorption temperature evidences on the presence of two different structure states of the Mg-Ti system depending on the ratio of components. The deuterium temperature decrease can be caused by filamentary inclusions of insoluble component (titanium) atoms formed in the process of composite making and annealing, providing the deuterium diffusion from the sample at a lower temperature (channels for deuterium diffusion through the surface barrier). The deuterium desorption data obtained on the example of Mg-Ti, Mg-V and Mg-Zr composites provide support for further research into hydrogen storage materials containing low-soluble chemical elements in the alloy component. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3550

Effects of Deuterium Implantation Dose on Hardness and Deuterium Desorption Temperature Range from High Entropy TiVZrNbHf and TiVZrNbHfN Coatings

High entropy TiVZrNbHf and TiVZrNbHfN coatings prepared by filtered vacuum arc plasma from a single equiatomic HEA cathode. Similarly were obtained titanium and titanium nitride coatings. The structure of coatings was investigated by X-ray analysis and the changes in nanohardness by nanoindentation method. The effusion of the implanted deuterium was studied by thermal desorption spectroscopy (TDS). It is shown that the structure of effusion spectrum is a function of deuterium dose. With increasing implantation dose deuterium desorption temperature range from coatings is expanding in the direction of lowering the temperature and the temperature of the peak maximum gas emission gradually shifts to lower temperatures. For nitride coatings deuterium desorption starts at about room temperature and the maximum rate of desorption at a temperature of ~500 K. When irradiation doses more than 5×1017 D/cm2 hardness of nitride coatings decreased by half. Hardness reduction of coatings is caused by occurrence hydride structural formations in coatings. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3536

Thermophysical properties of fuel clading with various vacuum-arc coatings

The developed research technique for determining emissivity of thin-walled cylindrical samples was used to investigate, in the mode of heat transfer by radiation, thermophysical properties of Zr1Nb fuel cladding samples with different coatings deposited by vacuum-arc method. It has been shown that CrN coating, compared to Zr1Nbbase alloy and Cr coating, can ensure a more effective heat expulsion by radiation in the event of loss-of-coolant accident and high temperature excursion This occurs according to the Stefan-Boltzmann radiation law and due to a higher value of total emissivity for CrN.З використанням розробленої методики визначення випромінювальної здатності тонкостінних циліндричних зразків досліджено теплофізичні властивості в режимі теплопереносу випромінюванням зразків оболонки твела зі сплаву Zr1Nb з різними покриттями, нанесеними вакуумно-дуговим методом. Показано, що покриття CrN, в порівнянні з базовим сплавом Zr1Nb і покриттям Cr, може забезпечити більш ефективне знімання тепла випромінюванням у разі аварії з втратою теплоносія і підвищенням температури, що пов'язується з дією закону Стефана-Больцмана і більш високим значенням інтегрального ступеня чорноти CrN.Используя разработанную методику определения излучательной способности тонкостенных цилиндрических образцов, исследовали теплофизические свойства в режиме теплопереноса излучением образцов оболочки твэла из сплава Zr1Nb с различными покрытиями, нанесенными вакуумно-дуговым методом. Показано, что покрытие CrN, по сравнению с базовым сплавом Zr1Nb и покрытием Cr, может обеспечить более эффективный съем тепла излучением в случае аварии с потерей теплоносителя и повышением температуры, что связывается с действием закона Стефана-Больцмана и более высоким значением интегральной степени черноты CrN