Zobrazeno 1 - 10
of 10
pro vyhledávání: '"A. V. Podkin"'
Autor:
Vladislav A. Shitov, A. V. Podkin, Vladimir V. Osipov, A. S. Korsakov, V. I. Solomonov, E. V. Tikhonov
Publikováno v:
Technical Physics. 66:149-154
Nanopowders of two crystalline phases, magnesium–aluminum spinel (98 wt %), and cuprite (2 wt %) have been obtained by laser evaporation of a solid target, which is a mechanical mixture of simple oxides (MgO, Al2O3, CuO). These nanopowders have bee
Autor:
V. I. Solomonov, V. V. Lisenkov, V. V. Platonov, A. V. Podkin, A. V. Spirina, Vladimir V. Osipov
Publikováno v:
Optics and Spectroscopy. 122:155-161
The spectra of luminescence of plumes that occur near targets of Nd: Y2O3, YSZ, and Al2O3 when they are irradiated by pulses of a ytterbium fiber laser with a wavelength of 1.07 μm, duration of 1450 μs, and intensity of 0.4 MW/cm2 are studied. Crat
Publikováno v:
Russian Physics Journal. 59:1295-1301
Morphology and properties of liquid crystal polymer composites doped with inorganic nanoparticles are described. These composites comprised nematic liquid crystal 5CB, polyvinyl acetate, and nanoparticles of oxides (Y2O3, CeO2:Y2O3, and Nd2O3:Y2O3).
Autor:
Vladimir V. Osipov, Kirill V. Fedorov, E. V. Tikhonov, V. V. Lisenkov, Maxim V. Trigub, G. S. Evtushenko, V. V. Platonov, A. V. Podkin
Publikováno v:
Quantum Electronics. 46:821-828
We study the laser plume dynamics by means of high-speed shooting in the intrinsic light, as well as using the shadow method with a laser monitor. It is found that the laser plume arising under the impact of a radiation pulse from an ytterbium fibre
Autor:
Andrey V. Podkin, Vasiliy V. Lisenkov, Vladimir V. Osipov, Vyacheslav V. Platonov, Egor V. Tikhonov
Publikováno v:
Applied Physics A. 124
The paper was devoted to investigation of Nd:Y2O3 nanopowder production by laser evaporation. The main attention is paid to investigating the features of evaporation and ablation of target by a ytterbium fibre laser radiation: formation of irregulari
Publikováno v:
Technical Physics. 59:716-723
The irradiation of Nd:Y2O3 targets with an absorption coefficient of 13–1.7 × 103 cm−1 using laser pulses with a duration of 0.1–3.5 ms and peak power of 200–700 W at a power density of (0.2–1.3) × 106 W/cm2 is studied. A relatively large
Publikováno v:
Technical Physics. 59:724-732
The laser ablation of the Nd:Y2O3 target with substantially nonuniform refractive index leads to the formation of a needle-shaped surface with a needle height of 6–8 mm. An increase in the displacement velocity of the laser beam on the surface to 8
Publikováno v:
Physica Status Solidi (C) Current Topics in Solid State Physics
The results of investigation of YSZ, Nd:Y2O3, Al2O3 nanopowder production by laser evaporation of oxide targets in a gas current are reported in present paper. For this purpose we used the pulse-periodical CO2 laser and the continuous fiber ytterbium
Publikováno v:
Technical Physics. 57:543-549
Magnetic iron oxide nanopowders are synthesized by the laser ablation of a target made of a coarse Fe2O3 powder. The geometric characteristics of the nanopowders and their yield are studied over a wide air pressure range ((1–34) × 104 Pa) in an ev
Publikováno v:
The Physics of Metals and Metallography. 102:439-451
Structure and texture of rolled nickel single crystals of various initial orientations have been studied in some detail. Special attention has been paid to the specific features of the deformation mesostructure and the possibility of formation of nuc