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Phys Rev Lett. 2009 Feb 20;102(7):075502. Epub 2009 Feb 19.

Unveiling the formation mechanism of pseudo-single-crystal aragonite platelets in nacre.

Author information

1
Department of Mechanical Engineering, University of South Carolina, 300 Main Street, Columbia, South Carolina 29208, USA. lixiao@engr.sc.edu

Abstract

We demonstrate direct evidence that a single-crystal-like aragonite platelet is essentially assembled with aragonite nanoparticles. The aragonite nanoparticles are readily oriented and assembled into pseudo-single-crystal aragonite platelets via screw dislocation and amorphous aggregation, which are two dominant mediating mechanisms between nanoparticles during biomineralization. These findings will advance our understanding of nacre's biomineralization process and provide additional design guidelines for developing biomimetic materials.

PMID:
19257685
DOI:
10.1103/PhysRevLett.102.075502
[Indexed for MEDLINE]
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