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Issue 4, 2012
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Polyhedral colloidal ‘rocks’: low-dimensional networks

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We introduce a model system of anisotropic colloidal ‘rocks’. Due to their shape, the bonding introduced via non-absorbing polymers is profoundly different from spherical particles: bonds between rocks are rigid against rotation, leading to strong frustration. We develop a geometric model which captures the essence of the rocks. Experiments and simulations show that the colloid geometry leads to structures of low fractal dimension. This is in stark contrast to gels of spheres, whose rigidity results from locally dense regions. At high density the rocks form a quasi one-component glass.

Graphical abstract: Polyhedral colloidal ‘rocks’: low-dimensional networks

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The article was received on 02 Sep 2011, accepted on 09 Nov 2011 and first published on 28 Nov 2011

Article type: Paper
DOI: 10.1039/C1SM06663C
Citation: Soft Matter, 2012,8, 1163-1167
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    Polyhedral colloidal ‘rocks’: low-dimensional networks

    R. Rice, R. Roth and C. P. Royall, Soft Matter, 2012, 8, 1163
    DOI: 10.1039/C1SM06663C

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