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Issue 14, 2016
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Fabricating large two-dimensional single colloidal crystals by doping with active particles

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Abstract

Using simulations we explore the behaviour of two-dimensional colloidal (poly)crystals doped with active particles. We show that these active dopants can provide an elegant new route to removing grain boundaries in polycrystals. Specifically, we show that active dopants both generate and are attracted to defects, such as vacancies and interstitials, which leads to clustering of dopants at grain boundaries. The active particles both broaden and enhance the mobility of the grain boundaries, causing rapid coarsening of the crystal domains. The remaining defects recrystallize upon turning off the activity of the dopants, resulting in a large-scale single-domain crystal.

Graphical abstract: Fabricating large two-dimensional single colloidal crystals by doping with active particles

  • This article is part of the themed collection: Colloids
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Publication details

The article was received on 06 Jan 2016, accepted on 22 Feb 2016 and first published on 22 Feb 2016


Article type: Paper
DOI: 10.1039/C6SM00031B
Citation: Soft Matter, 2016,12, 3406-3411
  • Open access: Creative Commons BY license
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    Fabricating large two-dimensional single colloidal crystals by doping with active particles

    B. van der Meer, L. Filion and M. Dijkstra, Soft Matter, 2016, 12, 3406
    DOI: 10.1039/C6SM00031B

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