[1] His research helped found the field of active matter, which studies the motility and related collective behaviour of objects that convert local energy input into autonomous motion.

[6] He is widely known for formulating the hydrodynamic equations[7][8] governing the alignment, flow, mechanics and statistical properties of suspensions of self-propelled creatures, on scales from a cell to the ocean.

[9][10] Key predictions—that macroscopically aligned flocks of swimming bacteria are impossible, and that the addition of swimmers to a fluid can make the viscosity arbitrarily small—have been confirmed in recent experiments.

[15] "All text published under the heading 'Biography' on Fellow profile pages is available under Creative Commons Attribution 4.0 International License."

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