Yielding and flow of colloidal glasses.

  title={Yielding and flow of colloidal glasses.},
  author={Georgios Petekidis and Dimitris Vlassopoulos and Peter N Pusey},
  journal={Faraday discussions},
          287-302; discussion 303-22, 419-21
We investigate the yielding and flow of hard-sphere colloidal glasses by combining rheological measurements with the technique of light scattering echo. The polymethylmethacrylate particles used are sufficiently polydisperse that crystallization is suppressed. Creep and recovery measurements show that the glasses can tolerate surprisingly large strains, up to at least 15%, before yielding irreversibly. We attribute this behaviour to 'cage elasticity', the ability of a particle and its cage of… CONTINUE READING
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