Slow dynamics in cylindrically confined colloidal suspensions
Soft Condensed Matter
2013-02-28 v1 Disordered Systems and Neural Networks
Abstract
We study bidisperse colloidal suspensions confined within glass microcapillary tubes to model the glass transition in confined cylindrical geometries. We use high speed three-dimensional confocal microscopy to observe particle motions for a wide range of volume fractions and tube radii. Holding volume fraction constant, we find that particles move slower in thinner tubes. The tube walls induce a gradient in particle mobility: particles move substantially slower near the walls. This suggests that the confinement-induced glassiness may be due to an interfacial effect.
Cite
@article{arxiv.1209.1108,
title = {Slow dynamics in cylindrically confined colloidal suspensions},
author = {Nabiha Saklayen and Gary L. Hunter and Kazem V. Edmond and Eric R. Weeks},
journal= {arXiv preprint arXiv:1209.1108},
year = {2013}
}
Comments
Submitted to AIP conference proceedings for "Slow Dynamics in Complex Systems" (Sendai, Japan, Dec. 2012)