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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.
Source Publication4TH INTERNATIONAL SYMPOSIUM ON SLOW DYNAMICS IN COMPLEX SYSTEMS: KEEP GOING TOHOKU
2013
Pages153-161
Conference Name4th International Symposium on Slow Dynamics in Complex Systems
Conference DateDEC 02-07, 2012
Conference PlaceSendai, JAPAN
AbstractGlass 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.
KeywordGlass Transition Colloid Ellipsoid
DepartmentNML空间材料物理力学
ISBN978-0-7354-1141-8
URL查看原文
Indexed ByCPCI
Language英语
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/47568
Collection国家微重力实验室
Corresponding AuthorZheng, ZY (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China.
Recommended Citation
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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