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Общее количество найденных документов : 16
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 1-10    11-16 
1.
Инвентарный номер: нет.
   
   C 74


   
    Computer Study of Glass-Like and Amorphous Silicon Nanoparticles [] / A. E. Galashev, V. A. Polukhin, I. A. Izmodenov, O. A. Galasheva // Поверхность. - 2006. - N 1. - С. 41-49: il., tabl. - Bibliogr.: p. 48-49 (26 ref.) . - ISSN 0207-3528
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
GLASS-LIKE AND AMORPHOUS -- SILICON NANOPARTICLES -- VORONOI POLYHEDRA CONSTRUCTION
Аннотация: Structural properties of vitreous and amorphous silicon nanoparticles containing 300, 400 and 500 atoms were investigated by the molecular dynamics method. The calculated nanoparticles radial distribution Functions and angular distributions of adjoining atoms were compared with the appropriate bulk Si-glass functions. The structure of the central part of silicon nanoparticles was investigatied in detail with the assistance of Voronoi polyhedra construction. The prevalence of five and six fold rings in Si-glasses nanoparticles and the domination of pentagons in amorphous silicon particles were revealed. The lengths of the Si-Si bonds and the number of bonds per atom were determined for nanoparticles under investigated conditions

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2.
Инвентарный номер: нет.
   
   C 74


   
    Computer Study of Glass-Like and Amorphous Silicon Nanoparticles [] / A. E. Galashev, V. A. Polukhin, I. A. Izmodenov, O. A. Galasheva // Поверхность. - 2006. - N 1. - С. 41-49: il., tabl. - Bibliogr.: p. 48-49 (26 ref.) . - ISSN 0207-3528
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
GLASS-LIKE AND AMORPHOUS -- SILICON NANOPARTICLES -- VORONOI POLYHEDRA CONSTRUCTION
Аннотация: Structural properties of vitreous and amorphous silicon nanoparticles containing 300, 400 and 500 atoms were investigated by the molecular dynamics method. The calculated nanoparticles radial distribution Functions and angular distributions of adjoining atoms were compared with the appropriate bulk Si-glass functions. The structure of the central part of silicon nanoparticles was investigatied in detail with the assistance of Voronoi polyhedra construction. The prevalence of five and six fold rings in Si-glasses nanoparticles and the domination of pentagons in amorphous silicon particles were revealed. The lengths of the Si-Si bonds and the number of bonds per atom were determined for nanoparticles under investigated conditions

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3.
Инвентарный номер: нет.
   
   C 74


   
    Computer study of structure of vitreous and amorphous silicon nanoparticles [Текст] / A. E. Galashev, V. A. Polukhin, I. A. Izmodenov, O. A. Galasheva // Poverkhnost. - 2006. - № 1. - С. 41-49
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
SILICON

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4.
Инвентарный номер: нет.
   
   C 74


   
    Computer study of structure of vitreous and amorphous silicon nanoparticles [Текст] / A. E. Galashev, V. A. Polukhin, I. A. Izmodenov, O. A. Galasheva // Poverkhnost. - 2006. - № 1. - С. 41-49
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
SILICON

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5.
Инвентарный номер: нет.
   
   G 15


    Galashev, A. E.
    Computer-assisted study of silver absorption by porous silicon dioxide nanoparticles [Электронный ресурс] / A. E. Galashev, V. A. Polukhin // Colloid Journal (Translation of Kolloidnyi Zhurnal). - 2011. - Vol.73, №6. - P761-767
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
IR ABSORPTION -- STRETCHING VIBRATIONS -- SURFACE GROUPS
Аннотация: The absorption of silver atoms by porous silicon dioxide particles is studied by the molecular dynamics method. Upon the absorption of silver atoms, (SiO 2) 50 nanoparticles do not increase their volume. A particle is divided into two unequal parts by an island shell formed from SiO 2 structural units, which causes anisotropy in the electrical and thermal conductivity of the nanocomposite. IR absorption and emission spectra, Raman spectra, as well as the number of electrons active with respect to IR radiation are calculated. The calculated absorption spectra show the mode corresponding to the stretching vibrations of Si-O surface groups. The addition of silver atoms to nanoparticles can enhance significantly the power of heat radiation emission

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6.
Инвентарный номер: нет.
   
   G 15


    Galashev, A. E.
    Computer-assisted study of silver absorption by porous silicon dioxide nanoparticles [Электронный ресурс] / A. E. Galashev, V. A. Polukhin // Colloid Journal (Translation of Kolloidnyi Zhurnal). - 2011. - Vol.73, №6. - P761-767
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
IR ABSORPTION -- STRETCHING VIBRATIONS -- SURFACE GROUPS
Аннотация: The absorption of silver atoms by porous silicon dioxide particles is studied by the molecular dynamics method. Upon the absorption of silver atoms, (SiO 2) 50 nanoparticles do not increase their volume. A particle is divided into two unequal parts by an island shell formed from SiO 2 structural units, which causes anisotropy in the electrical and thermal conductivity of the nanocomposite. IR absorption and emission spectra, Raman spectra, as well as the number of electrons active with respect to IR radiation are calculated. The calculated absorption spectra show the mode corresponding to the stretching vibrations of Si-O surface groups. The addition of silver atoms to nanoparticles can enhance significantly the power of heat radiation emission

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7.
Инвентарный номер: нет.
   
   P 80


    Polukhin, V. A.
    Effect of the character of the (Ni, Pd) cluster/graphene interatomic bonds on the thermosize effects and structural-isomeric transitions [Электронный ресурс] / V. A. Polukhin, E. D. Kurbanova, A. E. Galashev // RUSSIAN METALLURGY. - 2012. - №8. - P696-704
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
COMPREHENSIVE ANALYSIS -- HEATING CONDITIONS -- INTERATOMIC BONDS
Аннотация: The thermal evolution of nanoclusters is studied by molecular dynamics simulation to analyze the nucleation and kinetics of the kinetic processes that determine the basic factors of the onset of premelting and the loss of thermal stability of a two-dimensional system of transition-metal (Pd, Ni) nanoclusters located on a graphene substrate. A comprehensive analysis reveals the effect of the initial structural characteristics of nanoclusters, the heating conditions, and the kinetic factors during thermally activated diffusion on the nanostructuring in the thermal evolution of the nanoclusters. This evolution includes the following stages: isomerization, quasi-melting, and the decomposition of a given regular structure; it is classified as an order-disorder transition and as an analog of phase transitions in macroscopic systems on the nanoscale

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8.
Инвентарный номер: нет.
   
   P 80


    Polukhin, V. A.
    Effect of the character of the (Ni, Pd) cluster/graphene interatomic bonds on the thermosize effects and structural-isomeric transitions [Электронный ресурс] / V. A. Polukhin, E. D. Kurbanova, A. E. Galashev // RUSSIAN METALLURGY. - 2012. - №8. - P696-704
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
COMPREHENSIVE ANALYSIS -- HEATING CONDITIONS -- INTERATOMIC BONDS
Аннотация: The thermal evolution of nanoclusters is studied by molecular dynamics simulation to analyze the nucleation and kinetics of the kinetic processes that determine the basic factors of the onset of premelting and the loss of thermal stability of a two-dimensional system of transition-metal (Pd, Ni) nanoclusters located on a graphene substrate. A comprehensive analysis reveals the effect of the initial structural characteristics of nanoclusters, the heating conditions, and the kinetic factors during thermally activated diffusion on the nanostructuring in the thermal evolution of the nanoclusters. This evolution includes the following stages: isomerization, quasi-melting, and the decomposition of a given regular structure; it is classified as an order-disorder transition and as an analog of phase transitions in macroscopic systems on the nanoscale

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9.
Инвентарный номер: нет.
   
   E 43


   
    Elastic properties and stability of crystalline silicon nanoparticles. Computer experiment. [Текст] / A. E. Galashev, V. A. Polukhin, I. A. Izmodenov, O. A. Galasheva // Poverkhnost. - 2007. - № 10. - С. 60-67
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
ELASTIC PROPERTIES

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10.
Инвентарный номер: нет.
   
   E 43


   
    Elastic properties and stability of crystalline silicon nanoparticles. Computer experiment. [Текст] / A. E. Galashev, V. A. Polukhin, I. A. Izmodenov, O. A. Galasheva // Poverkhnost. - 2007. - № 10. - С. 60-67
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
ELASTIC PROPERTIES

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 1-10    11-16 
 

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