The velocity source concept

J. van Suchtelen, A.J. Nijdam, E. van Veenendaal

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    Traditional kinematic wave theory neglects considerations involving free energy of a surface and nucleation at the boundary of a surface. As a consequence, strictly speaking this theory is only applicable to freely floating perfect crystals, and when applied to more complex situations the conclusions may be false. In this paper we argue that boundary conditions, to be taken into account at interface junctions, affect the shape of the crystal. The effect is either microscopic or macroscopic. In the first case, we have a “kinetic meniscus”, a curved transition of the size of the critical radius. In the second case, the growth rate is affected macroscopically and we may consider the boundary as a “velocity source” for the affected interface. These concepts are essential elements in a version of kinematic wave theory that is applicable to all physically relevant situations.
    Original languageEnglish
    Pages (from-to)17-21
    JournalJournal of crystal growth
    Issue number1
    Publication statusPublished - 1999
    Event12th International Conference on Crystal Growth, ICCG 1998 - Jerusalem, Israel
    Duration: 26 Jul 199831 Jul 1998
    Conference number: 12


    • METIS-111694
    • IR-74005
    • Crystal growth kinetics
    • Surface morphology
    • Kinematic wave theory


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