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- California Institute of TechnologyUS68 papers
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15 papers · 1 filter
Many-Body Electrostatic Forces Between Colloidal Particles at Vanishing Ionic Strength
Jason W. Merrill, Sunil K. Sainis, Eric R. Dufresne
Electrostatic forces between small groups of colloidal particles are measured using blinking optical tweezers. When the electrostatic screening length is significantly larger than…
Dynamics of Internal Stresses and Scaling of Strain Recovery in an Aging Colloidal Gel
Ajay Singh Negi, Chinedum O. Osuji
We monitor the relaxation of internal stresses in a fractal colloidal gel on cessation of flow and find a weak power law decay, over 5 decades of time where $α\ap…
Onsager reciprocity in premelting solids
S. S. L. Peppin, M. Spannuth, J. S. Wettlaufer
The diffusive motion of colloidal particles dispersed in a premelting solid is analyzed within the framework of irreversible thermodynamics. We determine the mass diffusion coeffic…
Equilibrium and nonequilibrium thermodynamics of particle-stabilized thin liquid films
J. Blawzdziewicz, E. Wajnryb
Our recent quasi-two-dimensional thermodynamic description of thin-liquid films stabilized by colloidal particles is generalized to describe nonuniform equilibrium states of films…
Comparison of low amplitude oscillatory shear in experimental and computational studies of model foams
Micah Lundberg, Kapilanjan Krishan, Ning Xu +2
A fundamental difference between fluids and solids is their response to applied shear. Solids possess static shear moduli, while fluids do not. Complex fluids such as foams display…
An analysis of the far-field response to external forcing of a suspension in Stokes flow in a parallel-wall channel
J. Blawzdziewicz, E. Wajnryb
The leading-order far-field scattered flow produced by a particle in a parallel-wall channel under creeping flow conditions has a form of the parabolic velocity field driven by a 2…