8 papers · 1 filter
Size matters more than packing in bimodal colloidal gel compositions
Robert A. Campbell, Ziye Zhuang, Ali Mohraz +1
Colloidal gels are frequently modeled as monodisperse particle networks, although practical formulations commonly contain particles with multiple characteristic sizes. Here, we use…
Bimodal colloids highlight the structural mirror of rigidity percolation and yielding
Robert A. Campbell, Ziye Zhuang, Ali Mohraz +1
In metastable particulate gels, it is tempting to believe that the dynamic similarities between the fluid-to-solid non-linear phase transition of rigidity percolation and the solid…
Isosbestic points in time resolved SAXS: from spectroscopic analogy to model free structural markers during colloidal gelation
Alain Gibaud, Wilbert J. Smit, Safa Jamali +1
Gelation is the transition from a fluid state into a system-spanning, out of equilibrim soft-solid network through a hierarchical process that couples local particle interactions t…
Shear-Induced Structural Convergence but Formation-History-Dependent Yielding in Sequentially Gelled Binary Colloidal Networks
Alexander Kaltashov, Safa Jamali
Multicomponent colloidal gels can exhibit mechanical responses that depend not only on interaction strengths but also on the temporal pathway by which their networks form. Here, we…
From Double Colloidal Networks to Core-Shell and Mixed Composites through Sequential Gelation
Alexander Kaltashov, Safa Jamali
Multicomponent gel systems have garnered much interest due to their compelling mechanical properties in the past decade. Yet, some mechanisms associated with multicomponent gels, s…
Brush-mediated angular constraints reshape structure, rigidity, and percolation in colloidal depletion gels
Ziye Zhuang, Robert A. Campbell, Paniz Haghighi +2
Colloidal gels, like many other soft and disordered solids derive their mechanical properties not only from the strength of interparticle attraction, but also from the symmetry of…