Physics
Nucleation and crystal growth in sheared granular sphere packings
Document Type
Article
Abstract
We investigate the nucleation of ordered phases, their symmetries, and distributions in dense frictional hard sphere packings as a function of particle volume fraction , by imposing cyclic shear and constant applied pressure conditions. We show, with internal imaging, that the nucleating crystallites in the bulk consist of 10-60 spheres with hexagonal close packed (hcp) order and nonspherical shape, that are oriented preferentially along the shear axis. Above =0.62±0.005, crystallites with face centered cubic (fcc) order are observed with increasing probability, and ordered domains grow rapidly. A polycrystalline phase with domains of fcc and hcp order is observed after hundreds of thousands of shear cycles. © 2012 American Physical Society.
Publication Title
Physical Review Letters
Publication Date
3-6-2012
Volume
108
Issue
10
ISSN
0031-9007
DOI
10.1103/PhysRevLett.108.108001
Repository Citation
Panaitescu, Andreea; Reddy, K. Anki; and Kudrolli, Arshad, "Nucleation and crystal growth in sheared granular sphere packings" (2012). Physics. 114.
https://commons.clarku.edu/faculty_physics/114
