Properties of electrostatically-driven granular medium: Phase transitions and charge transfer

被引:0
|
作者
Aranson, IS [1 ]
Blair, D [1 ]
Kalatsky, VA [1 ]
Crabtree, GW [1 ]
Kwok, WK [1 ]
Vinokur, VM [1 ]
Welp, U [1 ]
机构
[1] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA
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中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
The experimental and theoretical study of electrostatically driven granular material are reported. It is shown that the charged granular medium undergoes a hysteretic first order phase transition from the immobile condensed state (granular solid) to a fluidized dilated state (granular gas) with a changing applied electric field. In addition a spontaneous precipitation of dense clusters from the gas phase and subsequent coarsening - coagulation of these clusters is observed. Molecular dynamics simulations shows qualitative agreement with experimental results.
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页码:723 / 728
页数:6
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