Ink-based printing or direct ink writing (DIW) falls under the material extrusion as defined in
ASTM52900. This method deposits ink-based material layer by layer to form a 3D article; …

Direct ink writing of dense and strong ceramic objects remains an important open challenge.
We develop a universal dimensionless criterion for printing such objects. Boehmite, an …

Yield stress fluids (YSF) exhibit strongly non-linear rheological characteristics. As a
consequence, they develop original flow features (as compared to simple fluids) under …

The influence of the solvent type on the rheological properties of Carbopol® NF 980
dispersions in water and in water/glycerol solutions is investigated. The material formulation …

Microfluidic tools and techniques for manipulating fluid droplets have become core to many
scientific and technological fields. Despite the plethora of existing approaches to fluidic …

This study presents the spreading of a single filament of a yield stress (viscoplastic) fluid
extruded onto a pre-wetted solid surface. The filaments spread laterally under surface …

We report on the interplay between creep and residual stresses in a carbopol microgel.
When a constant shear stress σ is applied below the yield stress σ y, the strain is shown to …

The spreading under surface tension and gravity of a droplet of yield-stress fluid over a thin
film of the same material is studied. The droplet converges to a final equilibrium shape once …

We study the injection flow of a heavy viscoplastic fluid into a light Newtonian fluid, via
modelling and experiments. The injection is carried out downward, via an eccentric inner …

The evolution of the liquid bridge formed between two coalescing sessile yield-stress drops
is studied experimentally. Surprisingly, we find that the height of the bridge evolves similar to …