Assembly of hard spheres in a cylinder: a computational and experimental study.


Journal Article

Hard spheres are an important benchmark of our understanding of natural and synthetic systems. In this work, colloidal experiments and Monte Carlo simulations examine the equilibrium and out-of-equilibrium assembly of hard spheres of diameter σ within cylinders of diameter σ≤D≤ 2.82σ. Although phase transitions formally do not exist in such systems, marked structural crossovers can nonetheless be observed. Over this range of D, we find in simulations that structural crossovers echo the structural changes in the sequence of densest packings. We also observe that the out-of-equilibrium self-assembly depends on the compression rate. Slow compression approximates equilibrium results, while fast compression can skip intermediate structures. Crossovers for which no continuous line-slip exists are found to be dynamically unfavorable, which is the main source of this difference. Results from colloidal sedimentation experiments at low diffusion rate are found to be consistent with the results of fast compressions, as long as appropriate boundary conditions are used.

Full Text

Duke Authors

Cited Authors

  • Fu, L; Bian, C; Shields, CW; Cruz, DF; López, GP; Charbonneau, P

Published Date

  • May 2017

Published In

Volume / Issue

  • 13 / 18

Start / End Page

  • 3296 - 3306

PubMed ID

  • 28405662

Pubmed Central ID

  • 28405662

Electronic International Standard Serial Number (EISSN)

  • 1744-6848

International Standard Serial Number (ISSN)

  • 1744-683X

Digital Object Identifier (DOI)

  • 10.1039/c7sm00316a


  • eng