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Author(s): M. Marmol, C. Cottin-Bizonne, A. Cēbers, D. Faivre, and C. Ybert Active fluids made of powered suspended entities spontaneously give rise to patterns and flows. Yet, how the swimmers activity can be harnessed by external cues into coherent macroscopic flows remains a question of biological and applied relevance. Here, we use magnetotactic bacteria, which respond … [Phys. Rev. Lett. 135, 248301] Published Mon Dec 08, 2025

Author(s): Iain McKenzie, Victoria L. Karner, Ruohong Li, W. Andrew MacFarlane, Gerald D. Morris, Michael F. Thees, John O. Ticknor, and James A. Forrest Specific preparation and thermal history lock oligomeric glasses into distinct regions of the potential energy landscape, giving rise to fundamentally different dynamics. [Phys. Rev. Lett. 135, 238101] Published Fri Dec 05, 2025

Author(s): Zhouyang Ge, John F. Brady, and Gwynn J. Elfring We investigate how shear influences the dynamics of active particles in dilute to concentrated suspensions. Using apolar active suspensions of squirmers as model systems, we show how their longtime diffusive dynamics can surprisingly slow down and vary nonmonotonically with the shear rate arising fr… [Phys. Rev. Lett. 135, 238302] Published Thu Dec 04, 2025

Author(s): Nicholas M. Boffi and Eric Vanden-Eijnden Active systems comprise a class of nonequilibrium dynamics in which individual components autonomously dissipate energy. Efforts towards understanding the role played by activity have centered on computation of the entropy production rate (EPR), which quantifies the breakdown of time reversal symmet… [Phys. Rev. Lett. 135, 238301] Published Tue Dec 02, 2025

Author(s): Emmanuel Villermaux A new principle underlying the physics of fragmentation explains why fragment sizes follow a specific, universal distribution. [Phys. Rev. Lett. 135, 228201] Published Wed Nov 26, 2025

Author(s): Shantanu Raikwar, Adham Al-Kassem, Nir S. Gov, Adriana I. Pesci, Raphaël Jeanneret, and Raymond E. Goldstein When subject to light coming from two different directions, Chlamydomonas reinhardtii, a phototactic unicellular algae, follows a tangent law, swimming opposite to the light sources in a direction which is the intensity-weighted average of both light propagation vectors. [Phys. Rev. Lett. 135, 228401] Published Wed Nov 26...

Author(s): José Martín-Roca, Kristian Thijssen, Tyler Shendruk, Angelo Cacciuto, and Chantal Valeriani Understanding the mechanical properties of active suspensions is crucial for their potential applications in materials engineering. Among active phenomena with no analog in equilibrium systems, motility-induced phase separation (MIPS) in active colloidal suspensions is one of the most extensively st… [Phys. Rev. Lett. 135, 228301] Published...