Movie S1.

Luminescence in air on a rough LiNbO3 surface. The movie was taken with a 10× optical magnification and shows how the luminescence pattern is affected by the surface roughness. We can observe the formation of radial streamers that bridge the central toroidal plasma with a plasma ring located approximately at 500μm from the jet impinging site. The streamers are seen to interact collectively and to give a visual perception of rotation, resembling the streamers seen in plasma balls.