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Tag: Rheology and Fluid Dynamics Studies

  • Refined hydrodynamic models add lipid alignment to bilayer theory

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    What the study found The authors derive refined hydrodynamic models for lipid bilayers that include a scalar order parameter for the molecular alignment of lipids along the surface normal. They obtain a hydrodynamic surface Landau–Helfrich model for asymmetric lipid bilayers and a surface Beris–Edwards model for symmetric lipid bilayers. Why the authors say this matters…

  • Gravity and surface tension both shape yield-stress droplet spreading

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    What the study found The study found that the final shape of spreading droplets of yield-stress fluids depends on both gravity and yield stress. In microgravity, the researchers could separate the effects of surface tension from those of yield stress. Why the authors say this matters The authors indicate that microgravity lets them vary two…

  • Viscoelastic droplets show an elasto-viscous coalescence regime

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    What the study found The study found a transition from an elasticity-dominated regime to an elasto-viscous regime in the coalescence of concentrated polymer droplets. Why the authors say this matters The authors conclude that these results advance understanding of droplet coalescence and highlight the role of viscoelastic effects in complex fluids. The study suggests that…