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

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 attract...

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Veröffentlicht in:	Soft matter 2016-04, Vol.12 (14), p.346-3411
Hauptverfasser:	van der Meer, B, Filion, L, Dijkstra, M
Format:	Artikel
Sprache:	eng
Schlagworte:	Colloids Crystal defects Crystals Dopants Grain boundaries Simulation Two dimensional Vacancies
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creator	van der Meer, B Filion, L Dijkstra, M
description	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. Using simulations we explore the behaviour of two-dimensional colloidal (poly)crystals doped with active particles.
doi_str_mv	10.1039/c6sm00031b
format	Article
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source	Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection
subjects	Colloids Crystal defects Crystals Dopants Grain boundaries Simulation Two dimensional Vacancies
title	Fabricating large two-dimensional single colloidal crystals by doping with active particles
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