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Defect turbulence in quasi-2D creeping dusty-plasma liquids | | Wei-Yen Woon
; Lin I
; | | Date: |
13 Feb 2004 | | Journal: | Phys Rev Lett, 92 (6), 065003 | | Abstract: | We report the intermittent and heterogeneous plastic structural rearrangement at the kinetic level in a quasi-2D creeping dusty-plasma Coulomb liquid through directly tracking each particle trajectory and measuring the evolution of each associated local bond-orientational order. The thermal agitation and external shear have comparable strengths. Their interplay with the Coulomb coupling enhances particle hopping, and induces the loss of local structural memory and avalanche-type excitation of topological defect clusters following the universal scaling behaviors of cluster size in xyt space, akin to the generic behavior of self-organized criticality. Increasing shear tends to reduce the aspect ratio of the temporal to the spatial spans of the defect cluster in xyt space. | | Source: | PubMed, pmid14995246 | | Services: | Forum | Review | Favorites | |
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