Journal Article

PreJuSER-813

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Attractive Colloidal Rods in Shear Flow

Ripoll, M.FZJ* ; Holmqvist, P.FZJ* ; Winkler, R. G.FZJ* ; Gompper, G.FZJ* ; Dhont, J. K. G.FZJ* ; Lettinga, M. P.FZJ*

2008
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/7178  doi:10.1103/PhysRevLett.101.168302

Abstract: The effect of shear flow on the isotropic-nematic phase transition of attractive colloidal rods is investigated by a combination of simulations and experiments. The isotropic phase aligns with the flow, while the nematic phase undergoes a collective rotational motion which frustrates the merging of the coexisting regions. The location of binodals, spinodals, and the tumbling-to-aligning transition line in the shear-rate versus concentration plane are investigated. The phase diagrams in the shear-concentration plane for the various strengths of attractions can be mapped onto a master curve by appropriate scaling.

Keyword(s): J

Note: We thank K. Mussawisade for his collaboration in the initial stage of this project. Financial support by the German Research Foundation (DFG) within SFB TR 6, and the European Network of Excellence SoftComp (Contract No. NMP3-CT-2004-502235) is gratefully acknowledged. M. R. thanks the Spanish MCYT (Project No. FIS2007-65869-C03-03) for partial support.

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Contributing Institute(s):

1. Theorie der Weichen Materie und Biophysik (IFF-2)
2. Weiche Materie (IFF-7)
3. Jülich-Aachen Research Alliance - Simulation Sciences (JARA-SIM)

Research Program(s):

1. Kondensierte Materie (P54)

Appears in the scientific report 2008

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