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Issue 30, 2015
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Self-assembly and crystallisation of indented colloids at a planar wall

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Abstract

We report experimental and simulation studies of the structure of a monolayer of indented (“lock and key”) colloids, on a planar surface. On adding a non-absorbing polymer with prescribed radius and volume fraction, depletion interactions are induced between the colloids, with controlled range and strength. For spherical particles, this leads to crystallisation, but the indented colloids crystallise less easily than spheres, in both simulation and experiment. Nevertheless, simulations show that indented colloids do form plastic (rotator) crystals. We discuss the conditions under which this occurs, and the possibilities of lower-symmetry crystal states. We also comment on the kinetic accessibility of these states.

Graphical abstract: Self-assembly and crystallisation of indented colloids at a planar wall

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Publication details

The article was received on 01 May 2015, accepted on 19 Jun 2015 and first published on 02 Jul 2015


Article type: Paper
DOI: 10.1039/C5SM01043H
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Soft Matter, 2015,11, 6089-6098

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    Self-assembly and crystallisation of indented colloids at a planar wall

    D. J. Ashton, S. J. Ivell, R. P. A. Dullens, R. L. Jack, N. B. Wilding and D. G. A. L. Aarts, Soft Matter, 2015, 11, 6089
    DOI: 10.1039/C5SM01043H

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