7 papers · 1 filter
Rheology of Two-Dimensional Dilute Emulsions
Thomas Appleford, Vatsal Sanjay, Maziyar Jalaal
The single droplet under shear is a foundational problem in fluid mechanics. In computational fluid dynamics, the two-dimensional (2D) formulation offers advantages in both computa…
Non-Reciprocal Capillary Waves
Holly du Plessis, Pedro Cosme, Hugo França +1
Capillary waves are a classical free-surface phenomenon in fluid mechanics, yet their behavior in chiral fluids remains largely unexplored. We show that odd viscosity breaks the re…
Spreading droplets of yield-stress fluids with and without gravity
Linnea Heitmeier, Olfa D'Angelo, Maziyar Jalaal +1
We investigate the effect of gravity on the spreading of droplets of yield stress fluids, by performing both microgravity experiments (in a drop tower) and experiments under terres…
Bouncing microdroplets on hydrophobic surfaces
Jamie Mclauchlan, Jim S. Walker, Vatsal Sanjay +4
Intuitively, slow droplets stick to a surface and faster droplets splash or bounce. However, recent work suggests that on non-wetting surfaces, whether microdroplets stick or bounc…
Arrested on heating: controlling the motility of active droplets by temperature
Prashanth Ramesh, Yibo Chen, Petra Räder +3
Self-propelling active matter relies on the conversion of energy from the undirected, nanoscopic scale to directed, macroscopic motion. One of the challenges in the design of synth…
Laser-induced droplet deformation: curvature inversion explained from instantaneous pressure impulse
Hugo França, Hermann Karl Schubert, Oscar Versolato +1
We investigate the shape of a tin sheet formed from a droplet struck by a nanosecond laser pulse. Specifically, we examine the dynamics of the process as a function of laser beam p…