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Träfflista för sökning "WFRF:(Gromov A. V.) srt2:(2010-2014)"

Search: WFRF:(Gromov A. V.) > (2010-2014)

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1.
  • Popok, Vladimir, 1966, et al. (author)
  • Optical and AFM study of ion-synthesised silver nanoparticles in thin surface layers of SiO2 glass
  • 2010
  • In: JOURNAL OF NON-CRYSTALLINE SOLIDS. - 0022-3093. ; 356:25-27, s. 1258-1261
  • Journal article (peer-reviewed)abstract
    • Silver nanoparticles were synthesised in thin surface layers of SiO 2 glass by 30 keV implantation of Ag+ ions with various fluences. Properties of the composites were studied using optical spectroscopy and atomic force microscopy. Optical spectra reveal specific absorption bands assigned to the surface plasmon resonance of the nucleated Ag nanoparticles. The spectral positions of absorption maxima are found to be dependent on the ion fluence that corresponds to the difference in mean sizes of the nanoparticles. Microscopy study shows formation of hemispherical nanosize bumps on the glass surfaces which represent a near-surface fraction of the partly towered nanoparticles. Post-implantation annealing leads to a shift of the plasmon maxima and to a change of the band widths. The transformations of optical spectra are in good agreementwith the change of nanoparticle sizes found by atomic force microscopy. Possible mechanisms governing the redistribution of the nanoparticles in size under the thermal treatment are suggested and discussed. © 2010 Elsevier B.V. All rights reserved.
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2.
  • Holland, D. M. P., et al. (author)
  • An experimental and theoretical study of the valence shell photoelectron spectrum of bromochlorofluoromethane
  • 2010
  • In: Journal of Physics B. - : IOP Publishing. - 0953-4075 .- 1361-6455. ; 43:13, s. 135101-
  • Journal article (peer-reviewed)abstract
    • The complete valence shell photoelectron spectrum of bromochlorofluoromethane (CHFClBr), covering the binding energy range similar to 10-50 eV, has been recorded using synchrotron radiation and the observed structure has been interpreted using ionization energies and relative spectral intensities computed using the third-order algebraic-diagrammatic-construction (ADC(3)) scheme for the one-particle Green's function and the outer valence Green's function (OVGF) method. The theoretical results demonstrate that the inner valence region of the photoelectron spectrum is dominated by satellite structure. Angle-resolved photoelectron spectra, recorded at selected excitation energies, have enabled the orbital assignments for the outer valence bands to be confirmed. The four outermost photoelectron bands, ascribed to the two pairs of orbitals associated with the nominally chlorine and bromine lone-pairs, exhibit characteristic angular distributions. The photon energy dependent variations in the relative photoelectron band intensities provide additional support for the orbital assignments.
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