Size distribution of embryos produced by crystal-rod contacts

A.E.D.M. van der Heijden, M. Elwenspoek, J.P. van der Eerden

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    We performed contact nucleation experiments on the (010) face of potassium hydrogen phthalate (KAP) crystals growing in a stagnant supersaturated aqueous solution and determined - after a given growth time t - (ex situ) the crystal size distribution (CSD) of the secondary nuclei (which at t = 0 are called "embryos") by using a scanning electron microscope (SEM). The origin of the secondary nuclei could clearly be revealed (damage to the crystal surface). The CSD can be fitted with a log-normal distribution which is typical for many powders obtained by grinding. Minimum size and mean size can be quantitatively understood by elementary fracture mechanics.
    Original languageEnglish
    Pages (from-to)398-410
    JournalJournal of crystal growth
    Issue number3
    Publication statusPublished - 1989


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