Abstract
The flow-induced microstructural distortions of dense colloidal dispersions under steady shearing are derived within a recent first-principles approach to the nonlinear rheology of colloidal fluids and glasses. The stationary structure factor is discussed to leading orders in shear rate . We find that shear affects the stationary structure whenever the dressed Peclet/Weissenberg number becomes appreciable; here τ is the structural or α-relaxation time. Close to vitrification, this predicts significantly larger shear distortions than expected from considering the bare Peclet number Pe0; it compares with the diffusion time of a colloid at infinite dilution.
Original language | English |
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Article number | 205132 |
Number of pages | 6 |
Journal | Journal of Physics: Condensed Matter |
Volume | 19 |
Issue number | 20 |
DOIs | |
Publication status | Published - 25 Apr 2007 |
Keywords
- diffusion
- microstructure
- Peclet number
- rheology
- shear stress
- structural relaxation