Observation of chaotic dynamics in dilute sheared aqueous solutions of CTAT

被引:124
作者
Bandyopadhyay, R [1 ]
Basappa, G [1 ]
Sood, AK [1 ]
机构
[1] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India
关键词
D O I
10.1103/PhysRevLett.84.2022
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The nonlinear flow behavior of a viscoelastic gel formed due to entangled, cylindrical micelles in aqueous solutions of the surfactant cetyl trimethylammonium tosilate (C-TAT) has been studied. On subjecting the system to a step shear I ate lying above a cer tain value, the shear and normal stresses show interesting time dependent behavior. The analysis of the measured time series shows the existence of a finite correlation dimension and a positive Lyapunov exponent, unambiguously implying that the dynamics can be described by that of a dynamical system with a strange attractor whose dimension increases with the increase in sheer rare.
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页码:2022 / 2025
页数:4
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