172 citations · 304 across the 7 of their papers we have counts for
7 papers
Local elastic perturbation of colloidal suspensions near the colloidal glass transition
Piotr Habdas, Rachel E. Courtland, Eric R. Weeks
Isolated microscopic magnetic particles are used to induce local perturbations in dense colloidal suspensions by rotating an external magnet. Confocal microscopy enables tracking o…
Stirring supercooled colloidal liquids at the particle scale
Piotr Habdas, Eric R. Weeks
We study the decay of tangential velocity profiles with distance from a local disturbance in hard-sphere colloidal suspensions as the colloidal glass transition is approached. The…
Hopper flows of deformable particles
Y. Cheng, J. D. Treado, B. Lonial +4
Numerous experimental and computational studies show that continuous hopper flows of granular materials obey the Beverloo equation that relates the volume flow rate and the ori…
Local elastic response measured near the colloidal glass transition
D. Anderson, D. Schaar, H. G. E. Hentschel +3
We examine the response of a dense colloidal suspension to a local force applied by a small magnetic bead. For small forces, we find a linear relationship between the force and the…
Particle dynamics in colloidal suspensions above and below the glass-liquid re-entrance transition
Andrzej Latka, Yilong Han, Ahmed M. Alsayed +3
We study colloidal particle dynamics of a model glass system using confocal and fluorescence microscopy as the sample evolves from a hard-sphere glass to a liquid with attractive i…
Forced motion of a probe particle near the colloidal glass transition
P. Habdas, D. Schaar, Andrew C. Levitt +1
We use confocal microscopy to study the motion of a magnetic bead in a dense colloidal suspension, near the colloidal glass transition volume fraction . For dense liquid-like…
Video Microscopy of Colloidal Suspensions and Colloidal Crystals
Piotr Habdas, Eric R. Weeks
Colloidal suspensions are simple model systems for the study of phase transitions. Video microscopy is capable of directly imaging the structure and dynamics of colloidal suspensio…