Droplet dynamics above the Faraday threshold

We present the results of an experimental exploration of walking droplets above the Faraday threshold. First, we describe a hydrodynamic analog of the optical Talbot effect and illustrate the manner in which this effect can be used to trap bouncing and walking droplets. Then, we explore the behavior of a bouncing droplet above the Faraday threshold, where the Faraday wave field may contribute a stochastic element to the drop’s dynamics. In this chaotic bouncing regime, we deduce effective diffusivity coefficients for the bouncing drops. Finally, we investigate numerically the dependence of the system behavior as the relative magnitudes of drop-generated pilot-wave and the background field are varied continuously.