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Lane formation in driven mixtures of oppositely charged colloids

By T. Vissers, Adam Wysocki, M. Rex, H. Löwen, C.P. Royall, A. Imhof and A. van Blaaderen


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

Year: 2011
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