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Загальна кількість знайдених документів : 6
Представлено документи з 1 до 6
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Chekadanov A. S. Small Angle X-ray Scattering in Thin Iron Films [Електронний ресурс] / A. S. Chekadanov, A. P. Kuzmenko, S. G. Emelyanov, L. M. Chervyakov, M. B. Dobromyslov // Журнал нано- та електронної фізики. - 2014. - Т. 6, № 3. - С. 03023-1-03023-3. - Режим доступу: http://nbuv.gov.ua/UJRN/jnef_2014_6_3_25 By small angle X-ray scattering (SAXS) and atomic force microscopy characteristic sizes are determined, structural features of thin iron films deposited by magnetron evaporation onto substrates from pyroceramics are established. It is shown that morphologically the film is characterized by disorder. It is formed from columnar nano crystallites that are oriented either perpendicular to the substrate or situated in its plane, which dictates polydispersity of those coatings. It is shown that SAXS may be thought of as nondestructive technique for analyzing structure and composition and conducting quality control of magnetron films.
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Kuzmenko A. P. Temperature and Concentration Effects of Aqueous Solution of Sodium Octanoate on Micelle Formation Measured by Small angle X-ray Scattering [Електронний ресурс] / A. P. Kuzmenko, A. S. Chekadanov, U. A. Mirgorod, T. A. Dolenko, S. A. Burikov, M. B. Dobromyslov // Журнал нано- та електронної фізики. - 2014. - Т. 6, № 3. - С. 03036-1-03036-3. - Режим доступу: http://nbuv.gov.ua/UJRN/jnef_2014_6_3_38 Characteristic sizes of sodium octanoate micelles have been determined (by nucleus radius) with the use of small angle X-ray scattering technique at various molar concentrations, which are for a spherical shape 1 and nonspherical 1,2 nm, respectively. The value of the critical concentration for micelle formation (CMC2) has been also found equal to 0,7 M.
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Kuzmenko A. P. Features of Structure of Magnetron Films Si3N4 and SiC [Електронний ресурс] / A. P. Kuzmenko, A. S. Chekadanov, S. V. Zakhvalinsky, E. A. Pilyuk, M. B. Dobromyslov // Journal of Nano- and Electronic Physics. - 2013. - Vol. 5, № 4(1). - С. 04025-1-04025-3. - Режим доступу: http://nbuv.gov.ua/UJRN/jnep_2013_5_4(1)__27 By small-angle X-ray scattering and atomic force microscopy shows the features of the structure of thin films of Si3N4 and SiC, deposited by magnetron sputtering on glass substrates.
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Ryapolov P. A. The Analysis of the Structural Parameters of Magnetic Fluids with SAXS and MGA Techniques [Електронний ресурс] / P. A. Ryapolov, V. M. Polunin, A. P. Kuzmenko, S. G. Emelianov, E. Y. Orlov, A. S. Chekadanov // Журнал нано- та електронної фізики. - 2015. - Т. 7, № 4. - С. 04003-1-04003-3. - Режим доступу: http://nbuv.gov.ua/UJRN/jnef_2015_7_4_5 Purpose - to study the structural parameters of the magnetite particles surrounded by the surfactant in the various carrier liquids using SAXS and based on the magnetization curve obtained applying ballistic method. The samples of the magnetite magnetic fluid based on water, engine oil and kerosene were investigated in this paper. Methodology - three samples of magnetic fluid were chosen for studying. Samples No 1 and No 2 were obtained at the UNESCO department of "Energy Conservation and Renewable Energy Sources", Belarusian National Technical University. Sample No 3 was obtained in the Fundamental Scientific Research Laboratory of Applied Ferrohydrodynamics of Ivanovo State Power Engineering University. SAXS experiment was conducted using Anton Paar SAXSess mc<^>2 analyzer at the Regional Centre of Nanotechnology of Southwest State University. Originality/value - The value of this work is to obtain new data on the physical parameters of the magnetic fluid samples. Findings - the derived surfactant shell width, which for the samples No 2, 3 was 1,8 - 1,9 nm, for the sample No 1 surfactant shell width was 3,5 nm, the excess of the calculated width of the surfactant layer can be explained due to the presence of a double layer of stabilizer. Keywords: Magnetic fluid, Magnetite nanoparticles.
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Kuzmenko A. P. Small Angle X-ray Scattering in Nanocomposite: Nanoparticles BaTiO3 with Modified Surface in Polystyrene [Електронний ресурс] / A. P. Kuzmenko, A. S. Chekadanov, M. A. Emelianov // Журнал нано- та електронної фізики. - 2015. - Т. 7, № 4. - С. 04009-1-04009-2. - Режим доступу: http://nbuv.gov.ua/UJRN/jnef_2015_7_4_11 By small angle X-ray scattering (SAXS) investigated the structure of polystyrene matrix composites filled by barium titanate nanoparticles with different volume fraction. Found that the percolation threshold for these systems is about 15 % of the content of the nanoparticles. Estimate the average distance between nanoparticles composites with different volume fraction.
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Ageeva L. S. Development and Physico-chemical Study of the Aqueous Dispersion Silver Nanoparticles as the Basis for Creating New Nanomaterials [Електронний ресурс] / L. S. Ageeva, A. S. Chekadanov, N. A. Borsch, A. P. Kuzmenko, M. M. Than, M. B. Dobromyslov // Журнал нано- та електронної фізики. - 2015. - Т. 7, № 4. - С. 04043-1-04043-2. - Режим доступу: http://nbuv.gov.ua/UJRN/jnef_2015_7_4_45 The aqueous dispersion of silver nanoparticles have been obtained and studied by physicochemical methods. Maximum of size nanoparticles distribution in the aqueous dispersion determined by the small angle X-ray scattering technique was 2,5 nm. The composition on the basis of those nanoparticles can be used to create new nanomaterials, in particular for the modification of talc silver nanoparticles. The existence of nanoparticles at the talс surface is corroborated by the data of energy dispersive spectra and by X-ray diffraction spectra.
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