Cohesive swimming in 2D confinement

Weak synchronization and macroscopic collective oscillation in dense bacterial suspensions

Weak synchronization and macroscopic collective oscillation in dense bacterial suspensions

Motion of E. coli flagellar filaments in thin films and of the surrounding fluid

Counterclockwise swirls in between cells confined in a thin film near surface

Fluid motion at the leading edge of an E. coli swarm

Bubble formation cascade

Oscillatory giant vortex with periodic chirality switching

Collective velocity field of oscillatory giant vortex

Cohesive swimming in 2D confinement

The advancing edge of a B. subtilis swarming colony

Cohesive swimming in 2D confinement

Collective motion within a P. mirabilis swarm

Self-organization of colony-scale motile rings

Self-organization of motile rings in a suspension drop

Long range and colony scale directed transport

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

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

Transition of global motion modes in bacterial active solids controlled by bacterial activity

Protrusion-to-branch transition at the interface of an active drop

Hierarchical transition from interfacial protrusions to creeping branches

Ordered vortex lattice in quasi-2D dense bacterial active fluids

Motility deactivation causes dissolution of vortex lattice pattern

Propagating spiral waves

Onset and evolution of the propagating spiral waves

Periodic reversal of myxobacterial cells

Periodic reversal of myxobacterial cells

Collective motion in a myxobacterial colony

Clustering of myxobacteria