276 citations · 1.3k across the 18 of their papers we have counts for
18 papers · 1 filter
Near-surface colloidal dynamics in jammed and slipping microgel suspensions
Masoodah Gunny, Frédérick Caetano, Matilde Bureau +4
Jammed suspensions of soft microgel particles may exhibit slippage along smooth boundaries. Owing to their expected sub-micrometric dimensions, direct observations of dynamics with…
Discrepancies in dynamic yield stress measurements of cement pastes
Subhransu Dhar, Teresa Liberto, Catherine Barentin +2
The dynamic yield stress associated with the flow cessation of cement pastes is measured using a rheometer equipped with various shear geometries such as vane, helical, sandblasted…
Ductile-to-brittle transition and yielding in soft amorphous materials: perspectives and open questions
Thibaut Divoux, Elisabeth Agoritsas, Stefano Aime +37
Soft amorphous materials are viscoelastic solids ubiquitously found around us, from clays and cementitious pastes to emulsions and physical gels encountered in food or biomedical e…
Continuum modeling of Soft Glassy Materials under shear
Roberto Benzi, Thibaut Divoux, Catherine Barentin +3
Soft Glassy Materials (SGM) consist in dense amorphous assemblies of colloidal particles of multiple shapes, elasticity, and interactions, which confer upon them solid-like propert…
Continuum modelling of shear start-up in soft glassy materials
Roberto Benzi, Thibaut Divoux, Catherine Barentin +3
Yield stress fluids (YSFs) display a dual nature highlighted by the existence of a yield stress such that YSFs are solid below the yield stress, whereas they flow like liquids abov…
Stress Overshoots in Simple Yield Stress Fluids
Roberto Benzi, Thibaut Divoux, Catherine Barentin +3
Soft glassy materials such as mayonnaise, wet clays, or dense microgels display under external shear a solid-to-liquid transition. Such a shear-induced transition is often associat…
Unified theoretical and experimental view on transient shear banding
Roberto Benzi, Thibaut Divoux, Catherine Barentin +3
Dense emulsions, colloidal gels, microgels, and foams all display a solid-like behavior at rest characterized by a yield stress, above which the material flows like a liquid. Such…
Simple ions control the elasticity of calcite gels via interparticle forces
Teresa Liberto, Catherine Barentin, Jean Colombani +4
Suspensions of calcite in water are employed in many industrial fields such as paper filling, pharmaceutics, heritage conservation or building construction, where the rheological p…
Probing the Fluctuation-Dissipation Theorem in a Perrin-like Experiment
Jean Colombani, Laure Petit, Christophe Ybert +1
In this Letter, we present a new experimental approach to investigate the effective temperature concept as a generalization of the fluctuation-dissipation theorem (FDT) for nonequi…
Yield stress and elasticity influence on surface tension measurements
Loren Jørgensen, Marie Le Merrer, Hélène Delanoë-Ayari +1
We have performed surface tension measurements on carbopol gels of different concentrations and yield stresses. Our setup, based on the force exerted by a capillary bridge on two p…
Scaling laws for slippage on superhydrophobic fractal surfaces
C. Cottin-Bizonne, C. Barentin, L. Bocquet
We study the slippage on hierarchical fractal superhydrophobic surfaces, and find an unexpected rich behavior for hydrodynamic friction on these surfaces. We develop a scaling law…
Yielding dynamics of a Herschel-Bulkley fluid: a critical-like fluidization behaviour
Thibaut Divoux, David Tamarii, Catherine Barentin +2
The shear-induced fluidization of a carbopol microgel is investigated during long start-up experiments using combined rheology and velocimetry in Couette cells of varying gap width…
Stress overshoot in a simple yield stress fluid: an extensive study combining rheology and velocimetry
Thibaut Divoux, Catherine Barentin, Sebastien Manneville
We report a large amount of experimental data on the stress overshoot phenomenon which takes place during start-up shear flows in a simple yield stress fluid, namely a carbopol mic…
From transient fluidization processes to Herschel-Bulkley behavior in simple yield stress fluids
Thibaut Divoux, Catherine Barentin, Sébastien Manneville
Stress-induced fluidization of a simple yield stress fluid, namely a carbopol microgel, is addressed through extensive rheological measurements coupled to simultaneous temporally a…
Transient Shear Banding in a Simple Yield Stress Fluid
Thibaut Divoux, David Tamarii, Catherine Barentin +1
We report a large set of experimental data which demonstrates that a simple yield stress fluid, i.e. which does not present aging or thixotropy, exhibits transient shear banding be…
Shear-induced fragmentation of Laponite suspensions
Thomas Gibaud, Catherine Barentin, Nicolas Taberlet +1
Simultaneous rheological and velocity profile measurements are performed in a smooth Couette geometry on Laponite suspensions seeded with glass microspheres and undergoing the shea…
Influence of boundary conditions on yielding in a soft glassy material
Thomas Gibaud, Catherine Barentin, Sebastien Manneville
The yielding behavior of a sheared Laponite suspension is investigated within a 1 mm gap under two different boundary conditions. No-slip conditions, ensured by using rough walls,…
Dynamics of simple liquids at heterogeneous surfaces : Molecular Dynamics simulations and hydrodynamic description
Cecile Cottin-Bizonne, Catherine Barentin, Elisabeth Charlaix +2
In this paper we consider the effect of surface heterogeneity on the slippage of fluid, using two complementary approaches. First, MD simulations of a corrugated hydrophobic surfac…