In this paper we introduce three technological ways how to increase an absorption coefficient of hydrogenated silicon/Si:H/ thin films and diode structures on the base of Si:H. The first one is reactive deposition epi...
详细信息
Vacuum deposition of Ge thin films onto Si and Al_2O_3 substrates by magnetron and ion-beam assisted sputtering was studied. During deposition sputtering time and substrate temperature were varied. Nanosecond pulsed a...
详细信息
ISBN:
(纸本)9781479900190
Vacuum deposition of Ge thin films onto Si and Al_2O_3 substrates by magnetron and ion-beam assisted sputtering was studied. During deposition sputtering time and substrate temperature were varied. Nanosecond pulsed annealing of deposited Ge films by powerful laser or ion beams was performed. The dependence of structural and optical properties of Ge/Si and Ge/Al_2O_3 films on parameters of pulsed treatments was investigated. Optimum parameters for deposition and pulsed treatments resulted in light emitting layers are determined.
There are intellectual activities where automation is required to support specialists in acceptance of crucial decisions. Intellectual tasks demand the careful analysis of data and use the knowledge formed by experts....
Ecological and genetic consequences of optimal equilibrium harvest with constant quota in uniform and two-aged populations have been considered in this work. It has been shown analytically that maximum of equilibrium ...
详细信息
ISBN:
(纸本)9788890357428
Ecological and genetic consequences of optimal equilibrium harvest with constant quota in uniform and two-aged populations have been considered in this work. It has been shown analytically that maximum of equilibrium harvest income is unreachable when both age groups are harvested simultaneously. The optimal strategy of harvest is the catch of fixed portion from single age group. In addition, optimal harvest may result not only in a change in the dynamic mode of the system, but also in a considerable change in the genetic composition of the population.
Optical properties of chitosan films of different ionic forms as well as their mutual correlation were investigated. By using spectral ellipsometry and mode spectroscopy methods it was discovered that these properties...
详细信息
Optical properties of chitosan films of different ionic forms as well as their mutual correlation were investigated. By using spectral ellipsometry and mode spectroscopy methods it was discovered that these properties depend upon relative humidity of environment. It was shown that all specimens studied are characterized by the relative humidity thresholds at which their optical properties vary. The data obtained allow one to consider chitosan as a material with optical properties controlled by the humidity level change
In the article the problems that appear during the constructing of virtual quality control analyzer models for industrial distillation process functioned in marginal operation are being discussed, as are the results o...
详细信息
In the article the problems that appear during the constructing of virtual quality control analyzer models for industrial distillation process functioned in marginal operation are being discussed, as are the results of modern regression methods application that are used for the virtual analyzers evaluation in the case of multicollinearity of model inputs.
There are intellectual activities where automation is required to support specialists in acceptance of crucial decisions. Intellectual tasks demand the careful analysis of data and use the knowledge formed by experts....
详细信息
There are intellectual activities where automation is required to support specialists in acceptance of crucial decisions. Intellectual tasks demand the careful analysis of data and use the knowledge formed by experts. The proposed upgrading of the system analysis provides effective updating of knowledge and long support of intellectual software as a whole.
This work is devoted to the theoretical analysis of the inverse problem of ellipsometry. This problem for many years remained one of the most important tasks in the study of thin films while interest in the ellipsomet...
详细信息
This work is devoted to the theoretical analysis of the inverse problem of ellipsometry. This problem for many years remained one of the most important tasks in the study of thin films while interest in the ellipsometric measurements stimulated by the possibility of obtaining planar fiber structures of various shapes and finding new materials, technologies and applications. This paper presents a theoretical apparatus for solving the inverse problem of ellipsometry, various methods of determining the optical parameters of the investigated thin films. Experimentally various samples of chitosan thin films on glass substrate were investigated by spectroscopic ellipsometer “Ellipse 1891 SAG” using the developed mathematical models. As it was revealed, a jump of refraction indexes at various humidity in the measured environment was observed, that does the given material perspective for creation on its basis of new planar optical waveguides in the future.
Supply chain disruption management aims at real-time supply chain monitoring, alerting supply chain participants about deviations and possible disruptions as well as elaborating adjustment control actions. A basis for...
详细信息
In the present study an optical remote method for monitoring parameters of hydroacoustic vibrations, which enables measurement of the low-frequency signals characteristics from the air environment, without mechanical ...
详细信息
In the present study an optical remote method for monitoring parameters of hydroacoustic vibrations, which enables measurement of the low-frequency signals characteristics from the air environment, without mechanical contact with water was developed The method provides a threshold sensitivity of ∼ 40 Pa, and has a linear frequency response in the range 10 ÷ 90 Hz.
暂无评论