Dynamical Heterogeneities in 2D Dusty Plasma Liquids at the Discrete Level

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/38929

Title:	Dynamical Heterogeneities in 2D Dusty Plasma Liquids at the Discrete Level
Authors:	Chan,CL;Io,CW;Lin,I
Contributors:	物理研究所
Keywords:	SELF-ORGANIZED CRITICALITY;STOCHASTIC RESONANCE;PHASE-TRANSITIONS;PARTICLE MOTIONS;COULOMB CLUSTERS;CRYSTAL;SYSTEM;DIFFUSION;BEHAVIOR;NOISE
Date:	2009
Issue Date:	2010-07-08 13:59:31 (UTC+8)
Publisher:	中央大學
Abstract:	Down to the discrete microscopic level, the liquid is neither homogeneous nor completely disordered. The interplay of mutual coupling and thermal agitation makes the system support short range structural order, and avalanche-type cooperative hopping excitations which lead to structural arrangement. The rich dynamical behaviors of spatio-temporal heterogeneities are still poorly understood because of the lack of proper tools for direct visualization. The dusty plasma liquid can be self-organized by negatively charged micrometer sized dusts suspending in a low-pressure rf discharge background. Its sub-mm inter-particle distance and the tens of second thermal relaxation time make it a proper system to mimic and understand the generic spatio-temporal behaviors of the liquid at the discrete kinetic level through direct optical video-microscopy. In this paper, we briefly review the recent studies on the dynamical heterogeneities of the cold 2D dusty plasma liquids at the discrete level. The effects of mutual interaction, thermal agitation, external shear, and tight confinement on micro-motion, anomalous diffusion, avalanche-type excitations of hopping clusters and defect clusters, structural ordering and rearrangement, and visco-elastic responses are presented and discussed. (C) WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Relation:	CONTRIBUTIONS TO PLASMA PHYSICS
Appears in Collections:	[Graduate Institute of Physics] journal & Dissertation

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