Bacterial motility depends on a critical flagellum length and energy-optimized assembly - Manuel Halte; Philipp F. Popp; David Hathcock; John Severn; Svenja Fischer; Christian Goosmann; Adrien Ducret; Emmanuelle Charpentier; Yuhai Tu; Eric Lauga; Marc Erhardt; Thibaud T. Renault (Proceedings of the National Academy of Sciences, 2025)