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DOI	10.1073/pnas.2018072118
	Observation of liquid glass in suspensions of ellipsoidal colloids
	Roller J.; Laganapan A.; Meijer J.-M.; Fuchs M.; Zumbusch A.
发表日期	2021
ISSN	00278424
卷号	118 期号:3
英文摘要	Despite the omnipresence of colloidal suspensions, little is known about the influence of colloid shape on phase transformations, especially in nonequilibrium. To date, real-space imaging results at high concentrations have been limited to systems composed of spherical colloids. In most natural and technical systems, however, particles are nonspherical, and their structural dynamics are determined by translational and rotational degrees of freedom. Using confocal microscopy of fluorescently labeled core–shell particles, we reveal that suspensions of ellipsoidal colloids form an unexpected state of matter, a liquid glass in which rotations are frozen while translations remain fluid. Image analysis unveils hitherto unknown nematic precursors as characteristic structural elements of this state. The mutual obstruction of these ramified clusters prevents liquid crystalline order. Our results give insight into the interplay between local structures and phase transformations. This helps to guide applications such as self-assembly of colloidal superstructures and also gives evidence of the importance of shape on the glass transition in general. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Colloidal dispersion; Confocal microscopy; Ellipsoidal core–shell colloids; Glass transition; Mode coupling theory
语种	英语
scopus关键词	glass; liquid glass; poly(methyl methacrylate); unclassified drug; accuracy; Article; chemical structure; colloid; confocal laser scanning microscopy; controlled study; ellipsoidal colloid; image analysis; microscopy; phase transition; priority journal; simulation; structure analysis; suspension
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/180966
作者单位	Department of Chemistry, University of Konstanz, Konstanz, 78464, Germany; Department of Physics, University of Konstanz, Konstanz, 78464, Germany; Institute of Physics, University of Amsterdam, Amsterdam, 1098 XH, Netherlands
推荐引用方式 GB/T 7714	Roller J.,Laganapan A.,Meijer J.-M.,et al. Observation of liquid glass in suspensions of ellipsoidal colloids[J],2021,118(3).
APA	Roller J.,Laganapan A.,Meijer J.-M.,Fuchs M.,&Zumbusch A..(2021).Observation of liquid glass in suspensions of ellipsoidal colloids.Proceedings of the National Academy of Sciences of the United States of America,118(3).
MLA	Roller J.,et al."Observation of liquid glass in suspensions of ellipsoidal colloids".Proceedings of the National Academy of Sciences of the United States of America 118.3(2021).