Synopsis Characterizing purely viscous or purely elastic rheological nonlinearities is straightforward using rheometric tests such as steady shear or step strains. However, a definitive frameworkâ€¦ (More)

The liquid filament microrheometer originally described by Bazilevsky et al. (1990) provides a simple way of extracting material parameters for Newtonian and viscoelastic fluids from measurements ofâ€¦ (More)

The flow of a polystyrene Boger fluid through axisymmetric contractionâ€“expansions having various contraction ratios (2 â‰¤ Î² â‰¤ 8) and varying degrees of re-entrant corner curvatures are studiedâ€¦ (More)

We investigate the dynamics of the capillary thinning and break-up process for low viscosity elastic fluids such as dilute polymer solutions. Standard measurements of the evolution of the midpointâ€¦ (More)

â– Abstract Filament-stretching rheometers are devices for measuring the extensional viscosity of moderately viscous non-Newtonian fluids such as polymer solutions. In these devices, a cylindricalâ€¦ (More)

We investigate the use of two distinct and complementary approaches to measuring the viscometric properties of low viscosity complex fluids at high shear rates up to 80,000 sâˆ’1. Firstly we adaptâ€¦ (More)

Large extensional deformations of viscoelastic fluid columns in filament stretching rheometers are studied through numerical simulations up to Hencky strains of greater than o=4. The time-dependentâ€¦ (More)

The progressive break-up of an initially stable fluid column or thread into a number of smaller droplets is an important dynamical process that impacts many commercial operations from spraying andâ€¦ (More)

The non-Newtonian flow of dilute aqueous polyethylene oxide (PEO) solutions through micro-fabricated planar abrupt contractionâ€“expansions is investigated. The small lengthscales and high deformationâ€¦ (More)

Citation Hyun, Kyu, Manfred Wilhelm, Christopher O. Klein, Kwang Soo Cho, Jung Gun Nam, Kyung Hyun Ahn, Seung Jong Lee, Randy H. Ewoldt, and Gareth H. McKinley. â€œA Review of Nonlinear Oscillatoryâ€¦ (More)