Journal
ULTRASONICS SONOCHEMISTRY
Volume 14, Issue 6, Pages 717-724Publisher
ELSEVIER
DOI: 10.1016/j.ultsonch.2006.12.004
Keywords
crystallization; ultrasound; induction period; supersaturation; metastable zone width
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The positive influence of ultrasound (US) on crystallization processes is shown by the dramatic reduction of the induction period, supersaturation conditions and metastable zone width. Manipulation of this influence can be achieved by changing US-related variables such as frequency, intensity, power and even geometrical characteristics of the ultrasonic device (e.g. horn type size). The volume of the sonicated solution and irradiation time are also variables to be optimized in a case-by-case basis as the mechanisms of US action on crystallization remain to be established. Nevertheless, the results obtained so far make foreseeable that crystal size distribution, and even crystal shape, can be 'tailored' by appropriate selection of the sonication conditions. (C) 2006 Elsevier B.V. All rights reserved.
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