Residual stresses and shear-induced overaging in boehmite gels

  title={Residual stresses and shear-induced overaging in boehmite gels},
  author={Iana Sudreau and Mathilde Auxois and Marion Servel and {\'E}ric L{\'e}colier and S{\'e}bastien Manneville and Thibaut Divoux},
  journal={Physical Review Materials},
Colloidal gels respond as soft solids at rest, whereas they flow as liquids under external shear. Starting from a fluidized state under an applied shear rate ˙ γ p , abrupt flow cessation triggers a liquid-to-solid transition during which the stress relaxes towards a so-called residual stress σ res that tallies a macroscopic signature of previous shear history. Here, we report on the liquid-to-solid transition in gels of boehmite, an aluminum oxide, that shows a remarkable nonmonotonic stress… 

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