Spatio-temporal dynamics of wormlike micelles under shear
Soft Condensed Matter
2007-05-23 v1
Abstract
Velocity profiles in a wormlike micelle solution (CTAB in D2O) are recorded using ultrasound every 2 s after a step-like shear rate into the shear-banding regime. The stress relaxation occurs over more than six hours and corresponds to the very slow nucleation and growth of the high-shear band. Moreover, oscillations of the interface position with a period of about 50 s are observed during the growth process. Strong wall slip, metastable states and transient nucleation of three-band flows are also reported and discussed in light of previous experiments and theoretical models.
Cite
@article{arxiv.cond-mat/0402249,
title = {Spatio-temporal dynamics of wormlike micelles under shear},
author = {L. Becu and S. Manneville and A. Colin},
journal= {arXiv preprint arXiv:cond-mat/0402249},
year = {2007}
}
Comments
4 pages, 5 figures, submitted to Phys.Rev.Lett