Interface Dynamics of Wet Active Systems

Author(s): Fernando Caballero, Ananyo Maitra, and Cesare Nardini We study the roughening of interfaces in phase-separated active suspensions on substrates. At both large length and time scales, we show that the interfacial dynamics belongs to the $|\mathbf{q}|\mathrm{KPZ}$ universality class discussed in Besse et al. [Phys. Rev. Lett. 130, 187102 (2023)]. This ho… [Phys. Rev. Lett. 134, 087105] Published Fri Feb 28, 2025