Single-cell dynamics in bacterial active turbulence

Self-sustained collective behavior emerges in bacterial suspension at high cell density, known as bacterial active turbulence. This new class of turbulence is characterized by chaotic flow with mesoscale vortices and jets, which is driven by cells' self-propulsion, cell-cell interactions, and hydrodynamic interactions. However, it remains poorly understood on the complex dynamics of bacterial turbulence. Here we developed a high-resolution single-cell and flow-tracking technique to study the microscopic dynamics in bacterial active turbulence. This work could help us better understand the mesoscale order in bacterial turbulence.