13 citations · 24 across the 6 of their papers we have counts for
6 papers
Multiplexed digital holography for fluid surface profilometry
August Geelmuyden, Vitor S. Barroso, Sreelekshmi C. Ajithkumar +2
Digital holography (DH) has been widely used for imaging and characterization of micro and nanostructures in materials science and biology and has the potential to provide high-res…
Third sound detectors in accelerated motion
Cameron R. D. Bunney, Vitor S. Barroso, Steffen Biermann +6
An accelerated observer moving through empty space sees particles appearing and disappearing, while an observer with a constant velocity does not register any particles. This pheno…
Primary thermalisation mechanism of Early Universe observed from Faraday-wave scattering on liquid-liquid interfaces
Vitor S. Barroso, August Geelmuyden, Zack Fifer +4
For the past two hundred years, parametric instabilities have been studied in various physical systems, such as fluids, mechanical devices and even inflationary cosmology. It was n…
Quantum vortex instability and black hole superradiance
Sam Patrick, August Geelmuyden, Sebastian Erne +2
Vortices and black holes set the scene for many interesting dynamical processes in physics. Here, we study the dynamical instability of quantised vortices and rotational superradia…
Origin and evolution of the multiply-quantised vortex instability
Sam Patrick, August Geelmuyden, Sebastian Erne +2
We show that the dynamical instability of quantum vortices with more than a single quantum of angular momentum results from a superradiant bound state inside the vortex core. Our c…
The sound-ring radiation of expanding vortex clusters
August Geelmuyden, Sebastian Erne, Sam Patrick +2
We investigate wave-vortex interaction emerging from an expanding compact vortex cluster in a two-dimensional Bose-Einstein condensate. We adapt techniques developed for compact gr…