ArticleScientific reports2016
Elastic instabilities in planar elongational flow of monodisperse polymer solutions.
Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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Who cites it
20 citing papers in PubMed.
- Systematic comparison of inverse Langevin function approximations in stochastic dumbbell dynamics.Journal of non-Newtonian fluid mechanics · 2026Article
- Emergent Interpolymer Interactions in Flowing Polymer Solutions.ACS macro letters · 2026Article
- How Viscoelastic Effects Impact Polymer Fluid Flow in Porous Media.Transport in porous media · 2026Article
- From yield stress to elastic instabilities: Tuning the extensional behavior of elastoviscoplastic fluids.PNAS nexus · 2024Article
- Naturally derived colloidal rods in microfluidic flows.Biomicrofluidics · 2023Article
- Lagrangian stretching reveals stress topology in viscoelastic flows.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Microstructural Dynamics and Rheology of Worm-like Diblock Copolymer Nanoparticle Dispersions under a Simple Shear and a Planar Extensional Flow.Macromolecules · 2022Article
- A simple yet efficient approach for electrokinetic mixing of viscoelastic fluids in a straight microchannel.Scientific reports · 2022Article
- Kinematics of the viscous filament during the droplet breakup in air.Scientific reports · 2022Article
- Elastic turbulence generates anomalous flow resistance in porous media.Science advances · 2021Article
- Bifurcations in flows of complex fluids around microfluidic cylinders.Lab on a chip · 2021Review
- Flow Direction-Dependent Elastic Instability in a Symmetry-Breaking Microchannel.Micromachines · 2021Article
- Stagnation points control chaotic fluctuations in viscoelastic porous media flow.Proceedings of the National Academy of Sciences of the United States of America · 2021Article
- Interfacial Tension Measurements in Microfluidic Quasi-Static Extensional Flows.Micromachines · 2021Article
- A microfluidic approach to studying the injection flow of concentrated albumin solutions.SN applied sciences · 2021Article
- Three-dimensional structures and symmetry breaking in viscoelastic cross-channel flow.Soft matter · 2020Article
- Heterogeneous flow inside threads of low viscosity fluids leads to anomalous long filament lifetimes.Scientific reports · 2019Article
- Geometric-Phase Microscopy for Quantitative Phase Imaging of Isotropic, Birefringent and Space-Variant Polarization Samples.Scientific reports · 2019Article
- Optimization of flow-focusing devices for homogeneous extensional flow.Biomicrofluidics · 2018Article
- Purely-elastic flow instabilities and elastic turbulence in microfluidic cross-slot devices.Soft matter · 2018Article
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Authors and funding
3 authors.
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Abstract
We investigate purely elastic flow instabilities in the almost ideal planar stagnation point elongational flow field generated by a microfluidic optimized-shape cross-slot extensional rheometer (OSCER). We use time-resolved flow velocimetry and full-field birefringence microscopy to study the behavior of a series of well-characterized viscoelastic polymer solutions under conditions of low fluid inertia and over a wide range of imposed deformation rates. At low deformation rates the flow is steady and symmetric and appears Newtonian-like, while at high deformation rates we observe the onset of a flow asymmetry resembling the purely elastic instabilities reported in standard-shaped cross-slot devices. However, for intermediate rates, we observe a new type of elastic instability characterized by a lateral displacement and time-dependent motion of the stagnation point. At the onset of this new instability, we evaluate a well-known dimensionless criterion M that predicts the onset of elastic instabilities based on geometric and rheological scaling parameters. The criterion yields maximum values of M which compare well with critical values of M for the onset of elastic instabilities in viscometric torsional flows. We conclude that the same mechanism of tension acting along curved streamlines governs the onset of elastic instabilities in both extensional (irrotational) and torsional (rotational) viscoelastic flows.
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