213 citations · 557 across the 12 of their papers we have counts for
6 papers · 1 filter
Yield precursor in primary creep of colloidal gels
Jae Hyung Cho, Irmgard Bischofberger
Predicting the time-dependent yielding of colloidal gels under constant stress enables control of their mechanical stability and transport. Using rotational rheometry, we show that…
Two Modes of Cluster Dynamics Govern the Viscoelasticity of Colloidal Gels
Jae Hyung Cho, Irmgard Bischofberger
Colloidal gels formed by strongly attractive particles at low particle volume fractions are composed of space-spanning networks of uniformly sized clusters. We study the thermal fl…
Criterion for fingering instabilities in colloidal gels
Thibaut Divoux, Asheesh Shukla, Badis Marsit +2
We sandwich a colloidal gel between two parallel plates and induce a radial flow by lifting the upper plate at a constant velocity. Two distinct scenarios result from such a tensil…
Emergence of Multiscale Dynamics in Colloidal Gels
Jae Hyung Cho, Roberto Cerbino, Irmgard Bischofberger
To gain insight into the kinetics of colloidal gel evolution at low particle volume fractions , we utilize differential dynamic microscopy to investigate particle aggregation, g…
Designing allostery-inspired response in mechanical networks
Jason W. Rocks, Nidhi Pashine, Irmgard Bischofberger +3
Recent advances in designing meta-materials have demonstrated that global mechanical properties of disordered spring networks can be tuned by selectively modifying only a small sub…
Multiple dynamic regimes in concentrated microgel systems
David A. Sessoms, Irmgard Bischofberger, Luca Cipelletti +1
We investigate dynamical heterogeneities in the collective relaxation of a concentrated microgel system, for which the packing fraction can be conveniently varied by changing the t…