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Panaitescu A, Reddy KA, Kudrolli A. Nucleation and crystal growth in sheared granular sphere packings. Phys Rev Lett. 2012;108(10):108001doi: 10.1103/PhysRevLett.108.108001.
Panaitescu, A., Reddy, K. A., & Kudrolli, A. (2012). Nucleation and crystal growth in sheared granular sphere packings. Physical review letters, 108(10), 108001. https://doi.org/10.1103/PhysRevLett.108.108001
Panaitescu, Andreea, et al. "Nucleation and crystal growth in sheared granular sphere packings." Physical review letters vol. 108,10 (2012): 108001. doi: https://doi.org/10.1103/PhysRevLett.108.108001
Panaitescu A, Reddy KA, Kudrolli A. Nucleation and crystal growth in sheared granular sphere packings. Phys Rev Lett. 2012 Mar 09;108(10):108001. doi: 10.1103/PhysRevLett.108.108001. Epub 2012 Mar 06. PMID: 22463455.
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Phys Rev Lett. 2012 Mar 09;108(10):108001. doi: 10.1103/PhysRevLett.108.108001. Epub 2012 Mar 06.

Nucleation and crystal growth in sheared granular sphere packings.

Physical review letters

Andreea Panaitescu, K Anki Reddy, Arshad Kudrolli

Affiliations

  1. Department of Physics, Clark University, Worcester, Massachusetts 01610, USA.

PMID: 22463455 DOI: 10.1103/PhysRevLett.108.108001

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 ϕ, 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 ϕ=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.

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