Oscillatory translation mode in a circular disk-shaped P. mirabilis biofilm

Enlarged view of the oscillatory translation mode in a circular disk-shaped P. mirabilis biofilm. The entire field of view is located at the centre of a P. mirabilis biofilm undergoing oscillatory translation. Shown in this fluorescence video are GFP-labelled cells embedded in the biofilm that served as tracers of local mass elements. The video is played at 50 frames per second with the real elapsed time indicated in the time stamp. Scale bar, 20 µm. See: Xu et al., Nature Physics 19, 46–51 (2023).