Fabricating large two-dimensional single colloidal crystals by doping with active particles. Issue 14 (3rd March 2016)

• Record Type: Journal Article
• Authors: van der Meer, B.; Filion, L.; Dijkstra, M.
• Is Part Of: Soft matter. Volume 12:Issue 14(2016)
• Page Start: 3406
• Page End: 3411
• Publication Date: 2016-03-03
• Subjects: Soft condensed matter -- Periodicals; 530.413
• DOI: 10.1039/c6sm00031b
• Languages: English
• ISSNs: 1744-683X

Abstract

Abstract : Using simulations we explore the behaviour of two-dimensional colloidal (poly)crystals doped with active particles. 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.