Author(s): Katsu Nishiyama, John Berezney, Michael M. Norton, Akshit Aggarwal, Saptorshi Ghosh, Zahra Zarei, Michael F. Hagan, Seth Fraden, and Zvonimir Dogic A feedback-controlled, light-responsive system regulates the chaotic motion of active fluids, maintaining steady flow speeds despite disturbances and enabling precise control over their dynamic behavior. [Phys. Rev. X 15, 041053] Published Fri Dec 19, 2025