Microfluidic extensional rheometry using a hyperbolic contraction geometry by Ober, Thomas Joseph, Haward, Simon J., Pipe, Christopher J., Soulages, Johannes, McKinley, Gareth H.

“…Microfluidic devices are ideally suited for the study of complex fluids undergoing large deformation rates in the absence of inertial complications. …”
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Stagnation point flow of wormlike micellar solutions in a microfluidic cross-slot device: Effects of surfactant concentration and ionic environment by Haward, Simon J., McKinley, Gareth H

“…By combining the measurements of critical conditions for the flow transitions with the viscometric material properties and the degree of shear-thinning characterizing each test fluid, it is possible to construct a stability diagram for viscoelastic flow of complex fluids in the cross-slot geometry.…”
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The rheology of aqueous solutions of ethyl hydroxy-ethyl cellulose (EHEC) and its hydrophobically modified analogue (hmEHEC): extensional flow response in capillary break-up, jetti... by Sharma, Vivek, Haward, Simon J., Keshavarz, Bavand, Soderlund, Asa, Threlfall-Holmes, Phil, Serdy, James George, McKinley, Gareth H

“…In aqueous solutions of polymers such as Ethyl Hydroxy-Ethyl Cellulose (EHEC), chain elongation provides additional elastic stresses that can delay the capillary-driven pinch-off, influencing the sprayability or jettability of the complex fluid. In this study, we quantify the transient response of thinning filaments of cellulose ether solutions to extensional flows in a Capillary Break-up Extensional Rheometer (CaBER) and in a forced jet undergoing break-up using Rayleigh Ohnesorge Jetting Extensional Rheometry (ROJER). …”
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