Lane formation in driven mixtures of oppositely charged colloids

We present quantitative experimental data on colloidal laning at the single-particle level. Our results demonstrate a continuous increase in the fraction of particles in a lane for the case where oppositely charged particles are driven by an electric field. This behavior is accurately captured by Br...

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Bibliographic Details
Published in:Soft matter 2011-01, Vol.7 (6), p.2352-2356
Main Authors: Vissers, Teun, Wysocki, Adam, Rex, Martin, Lowen, Hartmut, Royall, CPatrick, Imhof, Arnout, van Blaaderen, Alfons
Format: Article
Language:English
Subjects:
Charged particles
Charging
Colloids
Dynamics
Electric fields
Fluctuation
Lanes
Simulation
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Summary:We present quantitative experimental data on colloidal laning at the single-particle level. Our results demonstrate a continuous increase in the fraction of particles in a lane for the case where oppositely charged particles are driven by an electric field. This behavior is accurately captured by Brownian dynamics simulations. By studying the fluctuations parallel and perpendicular to the field we identify the mechanism that underlies the formation of lanes.
ISSN:1744-683X
DOI:10.1039/C0SM01343A