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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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Article information


Submitted
06 Jan 2016
Accepted
22 Feb 2016
First published
22 Feb 2016

This article is Open Access

Soft Matter, 2016,12, 3406-3411
Article type
Paper

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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