Glass transitions in monolayers of colloidal ellipsoids

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	Glass transitions in monolayers of colloidal ellipsoids
	Zheng ZY(郑中玉); Han YL; Zheng, ZY (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China.
会议录名称	4TH INTERNATIONAL SYMPOSIUM ON SLOW DYNAMICS IN COMPLEX SYSTEMS: KEEP GOING TOHOKU
	2013
页码	153-161
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
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.
关键词	Glass Transition Colloid Ellipsoid
课题组名称	NML空间材料物理力学
ISBN号	978-0-7354-1141-8
URL	查看原文
收录类别	CPCI
语种	英语
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/47568
专题	微重力重点实验室
通讯作者	Zheng, ZY (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Zheng ZY,Han YL,Zheng, ZY . Glass transitions in monolayers of colloidal ellipsoids[C]4TH INTERNATIONAL SYMPOSIUM ON SLOW DYNAMICS IN COMPLEX SYSTEMS: KEEP GOING TOHOKU,2013:153-161.

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