NEGATIVE POISSON RATIO IN 2-DIMENSIONAL NETWORKS UNDER TENSION

被引:95
作者
BOAL, DH [1 ]
SEIFERT, U [1 ]
SHILLCOCK, JC [1 ]
机构
[1] FORSCHUNGSZENTRUM JULICH, FORSCHUNGSZENTRUM, INST FESTKORPERFORSCH, D-52425 JULICH, GERMANY
关键词
D O I
10.1103/PhysRevE.48.4274
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
The elastic properties of two-dimensional networks under tension are studied by the mean-field appoximation and Monte Carlo simulation. The networks are characterized by fixed (polymerized) connectivity and either a square-well or a Hooke's?aw interaction among their components. Both self-avoiding and phantom networks are examined. The elastic properties of Hooke's-law networks at large equilibrium length are found to be well represented by a mean-field model. All the networks investigated show a negative Poisson ratio over a range of tension. At finite tension, the phantom networks exhibit a phase transition to a collapsed state.
引用
收藏
页码:4274 / 4283
页数:10
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