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  • Nanoparticle generation: The concept of a stagnation size region for condensation growth

    Author(s)
    Altman, IS
    Agranovski, IE
    Choi, M
    Griffith University Author(s)
    Agranovski, Igor E.
    Altman, Igor
    Year published
    2004
    Metadata
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    Abstract
    We demonstrate that the critical size cluster concept, commonly used in a nucleation theory, should be given some further attention. It has been implied that the supercritical cluster (size larger than critical) can grow via condensation. However, as we show, there is a size range, where the arrival of a vapor molecule onto a cluster surface leads to such a heating of the supercritical cluster that, due to possible evaporation, makes it unstable and, therefore, disables its condensation growth. The described phenomenon leads to substantial accumulation of certain size clusters in the system, which is clearly evident from our ...
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    We demonstrate that the critical size cluster concept, commonly used in a nucleation theory, should be given some further attention. It has been implied that the supercritical cluster (size larger than critical) can grow via condensation. However, as we show, there is a size range, where the arrival of a vapor molecule onto a cluster surface leads to such a heating of the supercritical cluster that, due to possible evaporation, makes it unstable and, therefore, disables its condensation growth. The described phenomenon leads to substantial accumulation of certain size clusters in the system, which is clearly evident from our experimental investigation. The found suppression of the nucleus growth within the certain size range (exceeding critical) has fundamental implications for many systems where the generation of nanoparticles occur at high temperatures.
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    Journal Title
    Physical Review E
    Volume
    70
    Issue
    6
    Publisher URI
    https://journals.aps.org/pre/abstract/10.1103/PhysRevE.70.062603
    Copyright Statement
    © 2004 American Physical Society. Reproduced in accordance with the copyright policy of the publisher. This journal is available online - use hypertext links.
    Subject
    Mathematical sciences
    Physical sciences
    Engineering
    Publication URI
    http://hdl.handle.net/10072/5215
    Collection
    • Journal articles

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