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A kinetic model of the transformation of a micropatterned amorphous precursor into a porous single crystal
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SYSNO ASEP 0352129 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title A kinetic model of the transformation of a micropatterned amorphous precursor into a porous single crystal Author(s) Fratzl, P. (DE)
Fischer, F. D. (AT)
Svoboda, Jiří (UFM-A) RID, ORCID
Aizenberg, J. (US)Number of authors 4 Source Title Acta Biomaterialia. - : Elsevier - ISSN 1742-7061
Roč. 6, č. 3 (2010), s. 1001-1005Number of pages 5 s. Language eng - English Country GB - United Kingdom Keywords Phase transformation ; Crystallization ; Nucleation and growth Subject RIV BJ - Thermodynamics R&D Projects OC10029 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z20410507 - UFM-A (2005-2011) UT WOS 000274943500032 DOI 10.1016/j.actbio.2009.09.002 Annotation Biogenic single crystals with complex shapes are believed to be generated by the crystallization of an amorphous precursor. Recent biomimetic experiments on the crystallization of calcite via amorphousto- crystalline transition point to the fact that the transformation kinetics may be controlled by the micropattern and the macroscopic shape of the amorphous precursor phase. Here we analyse a simple kinetic model, based on thermodynamic considerations, showing that the presence of cavities in the micropatterned precursor phase might interfere with the transformation process and control its kinetics. The size of the cavities couples to the total surface energy and, hence, to crystal nucleation and growth, while the spacing of the cavities, as compared to the typical diffusion path, controls the possible nucleation of competing crystals. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2011
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