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A kinetic model of the transformation of a micropatterned amorphous precursor into a porous single crystal

Paper ID Volume ID Publish Year Pages File Format Full-Text
1672 88 2010 5 PDF Available
Title
A kinetic model of the transformation of a micropatterned amorphous precursor into a porous single crystal
Abstract

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 amorphous-to-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.

Keywords
Amorphous calcium carbonate; Biomineralization; Crystallization; Nucleation and growth; Phase transformation
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A kinetic model of the transformation of a micropatterned amorphous precursor into a porous single crystal
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Publisher
Database: Elsevier - ScienceDirect
Journal: Acta Biomaterialia - Volume 6, Issue 3, March 2010, Pages 1001–1005
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us