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Título : Chiral Symmetry Breaking during Crystallization: An Advection-Mediated Nonlinear Autocatalytic Process
Autor : Cartwright, Julyan H. E., García Ruiz, Juan Manuel, Piro, Oreste, Sainz-Díaz, C. Ignacio, Tuval, Idan
Palabras clave : [PACS] Theory and models of crystal growth; physics of crystal growth, crystal morphology and orientation
[PACS] Chaos
[PACS] Multiphase and particle-laden flows
[PACS] Whiskers and dendrites (growth, structure, and nonelectronic properties)
Fecha de publicación : 1-Apr-2004
Editor: American Physical Society
Citación : Physical Review Letters 93(3): 035502 (1-4) (2004)
Resumen: When a chiral chemical compound crystallizes from solution or from its melt, stirring often results in the formation of crystals of just one of the two possible enantiomers, while without fluid advection, both enantiomers are formed. We demonstrate with simulations of the dynamics of the system that secondary nucleation is a nonlinear autocatalytic phenomenon that can explain these observations. Furthermore, we present theoretical arguments and experimental results that suggest that at the microscale the mechanism of secondary nucleation is whisker crystal growth and dispersion in the fluid flow.
Descripción : 4 pages, 3 images.-- PACS nrs.: 81.10.Aj, 47.52.+j, 47.55.Kf, 68.70.+w.
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ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.93.035502
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