Phys. Rev. E 77, 060403(R) (2008) [4 pages]

Structure and dynamics of biphasic colloidal mixtures

Abstract

References

Citing Articles (3)

Supplemental Material

Download: PDF (466 kB) Buy this article Export: BibTeX or EndNote (RIS)

Ali Mohraz^1,*, Eric R. Weeks², and Jennifer A. Lewis¹
¹Department of Materials Science and Engineering and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
²Department of Physics, Emory University, Atlanta, Georgia 30322, USA

Received 29 October 2007; revised 27 February 2008; published 13 June 2008

We investigate the structure and dynamics of biphasic colloidal mixtures composed of coexisting attractive and repulsive microspheres by confocal microscopy. Attractive gels formed in the presence of repulsive microspheres are more spatially homogeneous and, on average, are both more locally tenuous and have fewer large voids than their unary counterparts. The repulsive microspheres within these mixtures display heterogeneous dynamics, with some species exhibiting freely diffusive Brownian motion while others are trapped within the gel network during aggregation.

URL:

http://link.aps.org/doi/10.1103/PhysRevE.77.060403

DOI:

10.1103/PhysRevE.77.060403

PACS:

82.70.Dd, 47.57.eb, 82.70.Gg

^*Present address: Department of Chemical Engineering and Materials Science, University of California, Irvine, CA 92697-2575.

About | Terms and Conditions | Subscriptions | Search | Help

Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.

Citation Search:

Phys. Rev. E 77, 060403(R) (2008) [4 pages]

Structure and dynamics of biphasic colloidal mixtures