title: Drop formation in non-Newtonian fluids.
abstract: We study the pinch-off dynamics of droplets of yield stress and shear thinning fluids. To separate the two non-Newtonian effects, we use a yield stress material for which the yield stress can be tuned without changing the shear thinning behavior, and a shear thinning system (without a yield stress) for which the shear thinning can be controlled over a large range, without introducing too much elasticity into the system. We find that the pinch-off remains very similar to that of constant viscosity Newtonian liquids, and consequently thinning in shear flow does not imply a thinning in elongational flow.
authors: Soft Matter Group, Van der Waals-Zeeman Institute, IoP, Science Park 904, Amsterdam, Netherlands.
authors: Mounir
authors: M
authors: Aytouna
authors: Jose
authors: J
authors: Paredes
authors: Noushine
authors: N
authors: Shahidzadeh-Bonn
authors: Sébastien
authors: S
authors: Moulinet
authors: Christian
authors: C
authors: Wagner
authors: Yacine
authors: Y
authors: Amarouchene
authors: Jens
authors: J
authors: Eggers
authors: Daniel
authors: D
authors: Bonn