To the Theory of Homogeneous Nucleation: Cluster Energy

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Title To the Theory of Homogeneous Nucleation: Cluster Energy
Author Altman, Igor; Agranovski, Igor E; Choi, M.; Zagainov, V. A.
Journal Name Russian Journal of Physical Chemistry A
Year Published 2008
Place of publication USA
Publisher SPRINGER
Abstract An attempt is made to critically analyze the modern state of the theory of homogeneous nucleation as concerns its ability to describe experiments with high accuracy. An analysis of the experimental data led us to conclude that the dependence of the nucleation rate on supersaturation and temperature T was not described by the theory, which underestimates the critical cluster size compared with the Gibbs-Thomson equation. The possibility of applying density functional theory ( one of the latest achievements in the theory of homogeneous nucleation) was questioned. Within this theory, the Gibbs-Thomson equation remains valid even outside the classic capillary approximation. It is suggested that, to bring theory in consistency with experiment, certain fundamental propositions of the theory of nucleation should be revised. The inclusion of an additional contribution to the Gibbs energy of a cluster caused by the size dependence of the specific heat capacity of the cluster decreases the critical cluster size compared with the value calculated by the Gibbs-Thomson equation. The calculated dependence of nucleation rate on supersaturation was in agreement with the experimental results.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1134/S0036024408120224
Copyright Statement Self-archiving of the author-manuscript version is not yet supported by this journal. Please refer to the journal link for access to the definitive, published version or contact the author[s] for more information.
Volume 82
Issue Number 12
Page from 2097
Page to 2102
ISSN 0036-0244
Date Accessioned 2009-03-14
Language en_AU
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Condensed Matter Modelling and Density Functional Theory
URI http://hdl.handle.net/10072/23541
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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