6 papers
Elastic wakes mediate collective viscoelastic fluid-structure interactions in side-by-side cantilever arrays
Arisa Yokokoji, Amy Q. Shen, Simon J. Haward
Fluid-structure interaction (FSI) in viscoelastic flows past deformable structures at low Reynolds numbers remains poorly understood, despite its relevance to biological systems su…
Capillary-driven thinning of DNA solutions
Vincenzo Calabrese, Silvia Nardone, Amy Q. Shen +1
Capillary thinning of polymeric fluids is central to biological and industrial processes, yet the mechanisms governing thinning dynamics remain unresolved, especially for semi-flex…
Large Amplitude Oscillatory Extension (LAOE) of dilute polymer solutions
Steffen M. Recktenwald, Thomas P. John, Amy Q. Shen +3
This study presents an experimental framework for large amplitude oscillatory extension (LAOE) to investigate nonlinear material properties of complex fluids. Using a microfluidic…
The interplay of plasticity and elasticity in elastoviscoplastic flows in wavy channels
Mohamed S. Abdelgawad, Simon J. Haward, Amy Q. Shen +1
Elastoviscoplastic (EVP) fluids, which exhibit both solid-like and liquid-like behavior depending on the applied stress, are critical in industrial processes involving complex geom…
Effects of polydispersity and concentration on elastocapillary thinning of dilute polymer solutions
Vincenzo Calabrese, Amy Q. Shen, Simon J. Haward
The thinning of liquid bridges under capillary stress occurs in widespread processes like jetting, dripping, and spraying, and creates a strong extensional flow capable of stretchi…
From yield stress to elastic instabilities: Tuning the extensional behavior of elastoviscoplastic fluid
Mohamed S. Abdelgawad, Simon J. Haward, Amy Q. Shen +1
In this study, we delve into the intricacies of elastoviscoplastic (EVP) fluids, particularly focusing on how polymer additives influence their extensional behavior. Our findings r…