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DOI	10.1073/pnas.2011799118
	Entropic formation of a thermodynamically stable colloidal quasicrystal with negligible phason strain
	Je K.; Lee S.; Teich E.G.; Engel M.; Glotzer S.C.
发表日期	2021
ISSN	00278424
卷号	118 期号:7
英文摘要	Quasicrystals have been discovered in a variety of materials ranging from metals to polymers. Yet, why and how they form is incompletely understood. In situ transmission electron microscopy of alloy quasicrystal formation in metals suggests an error-and-repair mechanism, whereby quasiperiodic crystals grow imperfectly with phason strain present, and only perfect themselves later into a high-quality quasicrystal with negligible phason strain. The growth mechanism has not been investigated for other types of quasicrystals, such as dendrimeric, polymeric, or colloidal quasicrystals. Soft-matter quasicrystals typically result from entropic, rather than energetic, interactions, and are not usually grown (either in laboratories or in silico) into large-volume quasicrystals. Consequently, it is unknown whether soft-matter quasicrystals form with the high degree of structural quality found in metal alloy quasicrystals. Here, we investigate the entropically driven growth of colloidal dodecagonal quasicrystals (DQCs) via computer simulation of systems of hard tetrahedra, which are simple models for anisotropic colloidal particles that form a quasicrystal. Using a pattern recognition algorithm applied to particle trajectories during DQC growth, we analyze phason strain to follow the evolution of quasiperiodic order. As in alloys, we observe high structural quality; DQCs with low phason strain crystallize directly from the melt and only require minimal further reduction of phason strain. We also observe transformation from a denser approximant to the DQC via continuous phason strain relaxation. Our results demonstrate that soft-matter quasicrystals dominated by entropy can be thermodynamically stable and grown with high structural quality––just like their alloy quasicrystal counterparts. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Quasicrystal growth \| tilings \| colloidal crystal \| entropic crystallization \| phason
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/180619
作者单位	Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109, United States; Applied Physics Program, University of Michigan, Ann Arbor, MI 48109, United States; Institute for Multiscale Simulation, Interdisciplinary Center for Nanostructured Films, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, 91058, Germany; Biointerfaces Institute, University of Michigan, Ann Arbor, MI 48109, United States
推荐引用方式 GB/T 7714	Je K.,Lee S.,Teich E.G.,et al. Entropic formation of a thermodynamically stable colloidal quasicrystal with negligible phason strain[J],2021,118(7).
APA	Je K.,Lee S.,Teich E.G.,Engel M.,&Glotzer S.C..(2021).Entropic formation of a thermodynamically stable colloidal quasicrystal with negligible phason strain.Proceedings of the National Academy of Sciences of the United States of America,118(7).
MLA	Je K.,et al."Entropic formation of a thermodynamically stable colloidal quasicrystal with negligible phason strain".Proceedings of the National Academy of Sciences of the United States of America 118.7(2021).