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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 19 (1991), S. 293-298 
    ISSN: 1434-6079
    Keywords: 64.70.KB ; 61.16.DI ; 81.30.HD
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Atomic resolution imaging of cluster structures has been performed with high resolution transmission electron microscopy (HRTEM). Metal particles of the sizes 1 nanometer to tens of nanometers have been surface profile imaged on different supports; like zeolites, cordierite and amorphous carbon. It is shown that organic ligands in Schmid-clusters coordinated to the metal surface are desorbed or destroyed by the electron beam. Dynamic events on the surfaces and in the bulk of small metal particles have been recorded for small crystals of Au, Pt, Rh and Pb and can be classified under three headings; The smaller the crystals are the faster rearrangements of the crystal structure; “clouds” of atoms existing outside some surfaces are involved in extensive structural rearrangements of the surface or crystal surface growth; localized atom hopping on surfaces during crystal growth and desorption also occurs.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1434-6079
    Keywords: PACS: 61.46.+w Clusters, nanoparticles, and nanocrystalline materials – 61.16.Bg Transmission, reflection and scanning electron microscopy – 81.20.Rg Aerosols in materials synthesis and processing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. Nanoparticles of GaAs and InP have been prepared by aerosol techniques and characterized by electron microscopy methods. Through variation of the reaction temperature, it has been possible to follow how the reaction proceeds when the group-III aerosol reacts with the group-V precursor to form III-V semiconductor nanoparticles. The reaction can be followed both by the measurement of the change in particle size and the determination of the increase in the group-V element content in the particles.
    Type of Medium: Electronic Resource
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