Observation of Chaotic Dynamics in Dilute Sheared Aqueous Solutions of CTAT

Details Observation of Chaotic Dynamics in Dilute Sheared Aqueous Solutions of CTAT Observation of Chaotic Dynamics in Dilute Sheared Aqueous Solutions of CTAT

1999-12-29

arxiv.org/abs/cond-mat/9912475v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 5 eps figures, to appear in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.84.2022

The nonlinear flow behaviour of a viscoelastic gel formed due to entangled, cylindrical micelles in aqueous solutions of the surfactant CTAT has been studied. On subjecting the system to a step shear rate lying above a certain value, the shear and normal stresses show interesting time dependent behaviour. 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 shear rate.

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