Výsledky vyhledávání - "V G, Nikitin"

Modeling of the Formation of Steep Portions of a Piecewise Continuous Profile in a One-Step Technology for Fabricating Diffractive Optical Elements using Oblique Laser Beams

Autor: V. P. Kir’yanov, V. G. Nikitin

Publikováno v: Optoelectronics, Instrumentation and Data Processing. 53:548-553

This paper presents the results of modeling the most important component of a one-step technology of fabricating kinoform lenses in thick photoresist layers with increased diffraction efficiency due to the formation of backward slopes of Fresnel zone

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::08053014dcd4adb071053a5494761769
https://doi.org/10.3103/s8756699017060024

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Reactions of phosphorus acids with N-tert-butyl-2,2-dichloropropanimine

Autor: Mukattis B. Gazizov, Rafail A. Khairullin, V. G. Nikitin, N. G. Aksenov

Publikováno v: Russian Journal of General Chemistry. 85:2106-2111

Reaction of N-tert-butyl-2,2-dichloropropanimine with dialkylphosphorous acids led to the formation of stable adducts, the chlorine atoms of which are inactive towards subsequent transformations. The primary salt of O,O-dialkyldithiophosphoric acid a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2877749b84bd77e218ca850c8a32038a
https://doi.org/10.1134/s1070363215090145

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Effect of treatment in supercritical CO2 on the composition and structure of tealeaf and cellulose

Autor: A. K. Fakhreev, A. B. Remizov, L. Yu. Yarullin, Z. I. Zaripov, D. I. Kamalova, I. M. Kolyadko, F. R. Gabitov, F. N. Shamsetdinov, Farid M. Gumerov, V. G. Nikitin

Publikováno v: Russian Journal of Physical Chemistry B. 5:1167-1172

The influence of the pretreatment procedures with supercritical CO2 (SC-CO2) on the elemental composition of tealeaf is studied. Fourier-transform infrared absorption spectroscopy is used to examine the effect of SC-CO2 on the structure of Chinese gr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e59466b7eb84e7ab1352ad96ee46bb82
https://doi.org/10.1134/s1990793111070141

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Diffractive elements for a free electron laser

Autor: P. M. Dutov, Yuri V. Chugui, V. G. Nikitin, A. I. Kokarev, M. F. Stupak, A. R. Sametov, V. M. Vedernikov, V. V. Chukanov, I. G. Palchikova, Boris A. Knyazev, V. P. Kir’yanov

Publikováno v: Optoelectronics, Instrumentation and Data Processing. 46:365-375

The limits of applicability of geometrical optical methods of calculating diffractive optical elements for terahertz radiation are determined. Use of the method of hot pressing in vacuum chambers to produce polymer transmissive diffractive elements f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cd097589e64d0b031b197b6a1e10a6fd
https://doi.org/10.3103/s8756699010040102

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Synthesis of 3-acyl-5-nitroisoxazoles on the base of geminal trinitro- and chlorodinitro-substituted pentan-2-one or 2-oximino-1-phenylbutan-1-one

Autor: V. G. Nikitin, A. A. Fainzil'berg, N. M. Lyapin, V. I. Slovetskii, G. Kh. Khisamutdinov

Publikováno v: Russian Chemical Bulletin. 58:2178-2181

3-Acyl-5-nitroisoxazoles were synthesized by heating 5,5,5-trinitropentan-2-one with LiCl in DMF at 100 °C as well as by heating oximino derivatives of 5,5,5-trinitro-, 5-chloro-5,5-dinitropentan-2-one or 4,4,4-trinitro- and 4-chloro-4,4-dinitro-1-p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::df53523dc18247359f534dd4cf7b2982
https://doi.org/10.1007/s11172-009-0299-5

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Dynamics of latent image writing in chromium films: Modeling and experiment

Autor: V. G. Nikitin

Publikováno v: Optoelectronics, Instrumentation and Data Processing. 43:563-570

Peculiarities of forming a temperature track in circular laser writing in chromium films on glass substrates are studied. The temperature field is calculated for a wide range of writing diameters (20–150 mm). Dynamics of heating a chromium film on

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f5562f98004c577571e7fe61fca91a7e
https://doi.org/10.3103/s8756699007060106

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The mechanism of current flow in an alloyed In-GaN ohmic contact

Autor: O. V. Konstantinov, V. G. Nikitin, T. V. Blank, Yu. A. Goldberg, E. A. Posse

Publikováno v: Semiconductors. 40:1173-1177

The resistance of alloyed In-GaN ohmic contact is studied experimentally. In the temperature range 180–320 K, the resistance per unit area increases with temperature, which is typical of metallic conduction and disagrees with current flow mechanism

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bfd2720f17ff7449431ba3fd7c5d7e2b
https://doi.org/10.1134/s1063782606100095

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Peculiarities in the mechanism of current flow through an ohmic contact to gallium phosphide

Autor: E. A. Posse, O. V. Konstantinov, V. G. Nikitin, T. V. Blank, Yu. A. Goldberg

Publikováno v: Technical Physics Letters. 30:806-809

The temperature dependence of the electric resistance of the In-GaP ohmic contact has been studied in the range from 77 to 420 K. The resistance was measured in GaP plates of various thickness with two In ohmic contacts. The measured ohmic contact re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::725c9ab3f3b355ff70e44fbbe0e833be
https://doi.org/10.1134/1.1813716

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