Superwalking Droplets*

A \textit{walker} is a droplet of liquid that can self-propel on the free surface of a vibrating bath of the same liquid through feedback between the droplet and its wave field. We have studied walking droplets in the presence of two driving frequencies and have observed a new class of walking droplets, which we coin \textit{superwalkers}. Superwalkers may be more than double the size of the largest walkers, may travel at more than triple the speed of the fastest ones, and enable a plethora of novel multi-droplet behaviors. Physical insights from numerical simulations into the emergence of the superwalking behavior are also discussed.