Microstructural evolution and irreversibility in the viscoelastic response of mesoscopic dusty-plasma liquids

被引：43

作者：

Chan, Chia-Ling ^{[1
]}

I, Lin, I

机构：

[1] Natl Cent Univ, Dept Phys, Jhongli 32001, Taiwan

[2] Natl Cent Univ, Ctr Complex Syst, Jhongli 32001, Taiwan

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.98.105002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We experimentally demonstrate the viscoelastic response and construct a microscopic dynamical picture using a quasi-2D dusty-plasma liquid confined in a mesoscopic gap and sheared periodically. The correlation between microdisplacement and structural evolution at the discrete kinetic level is explored. Through hopping, the structural rearrangement associated with shear enhanced stretching, kinking, breaking, and reconnection of local lattice lines generates irreversible plastic deformation. The strain energy accumulation in the twisted regions without topological rearrangement is the source for local rebound.

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