Glass transitions in monolayers of colloidal ellipsoids

	Glass transitions in monolayers of colloidal ellipsoids
	Zheng ZY(郑中玉); Han YL
	2013
会议名称	4th International Symposium on Slow Dynamics in Complex Systems
会议日期	DEC 02-07, 2012
会议地点	Sendai, JAPAN
关键词	glass transition colloid ellipsoid
卷号	1518
页码	153-161
通讯作者	Zheng, ZY (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China.
中文摘要	Glass formers constitute of anisotropic particles was mainly studied by simulations in three dimensions with incomplete phase diagrams. Here we studied the structures and the glassy dynamics for translational and rotational motions in quasi-two dimensional (2D) suspensions of colloidal ellipsoids at the single-particle level. At high densities, ellipsoids with large aspect ratio formed psuedo-nematic domains. Video microscopy revealed a two-step glass transition: rotational motion first becomes glassy due to the inter-domain freezing, then translational motion become glassy at a higher density due to inner-domain freezing. Between the two transitions, ellipsoids formed an "orientational glass". Below and near the respective glass transition densities, the rotational and translational fastest-moving particles moved cooperatively and formed clusters with power-law size distributions. The mean cluster sizes diverge in power law as approaching the glass transitions. The fast translational particles concentrated in pseudonematic domains and form band-like clusters while the fast rotational particles mainly located around domain boundaries and form branch-like clusters.
收录类别	CPCI
合作状况	国内
产权排序	[Zheng, Zhongyu] Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China; [Han, Yilong] Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China
会议网址	http://dx.doi.org/10.1063/1.4794562
会议录	4TH INTERNATIONAL SYMPOSIUM ON SLOW DYNAMICS IN COMPLEX SYSTEMS: KEEP GOING TOHOKU
会议录出版者	AMER INST PHYSICS
学科主题	Physics, Applied; Physics, Fluids & Plasmas; Physics, Condensed Matter
语种	英语
ISSN号	0094-243X
ISBN号	978-0-7354-1141-8
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/47568]
专题	力学研究所_国家微重力实验室
推荐引用方式 GB/T 7714	Zheng ZY,Han YL. Glass transitions in monolayers of colloidal ellipsoids[C]. 见:4th International Symposium on Slow Dynamics in Complex Systems. Sendai, JAPAN. DEC 02-07, 2012.http://dx.doi.org/10.1063/1.4794562.