Tiny droplets of oil in a simple mixture can create the same violent turbulence seen in massive jet engines and hurricanes.
April 24, 2026
Original Paper
Tunable turbulence in driven microscale emulsions
arXiv · 2604.18802
The Takeaway
Turbulence is traditionally a phenomenon of large scales and high speeds where energy cascades down through massive swirls. These microscale emulsions prove that even slow-moving, microscopic fluids can hit the same mathematical benchmarks. The oil droplets interact in a way that perfectly mimics the power-law scaling found in the world's most chaotic flows. This means we can study the physics of the atmosphere or industrial pipes using nothing more than a small vial of oil. It opens up a way to control complex fluid behavior in tiny medical devices or chemical reactors.
From the abstract
We present a tunable, non-equilibrium oil-in-oil emulsion that serves as a model system for investigating the transition from controlled droplet deformation to multiscale flows reminiscent of turbulence. By utilizing a miscible mixture of silicone and motor oils as the continuous phase and the immiscible castor oil as the droplet phase, we isolate electrical conductivity as a single experimental control parameter, varying it by over two orders of magnitude while keeping viscosity and permittivit