5 papers
Activity enhances transport while competing interactions preserve structure in colloidal microphase formers
Horacio Serna, José MartÃn-Roca, Ariel G. Meyra +1
Colloidal models with short-range attraction and long range repulsion (SALR) have been extensively studied using theoretical and simulations methods due to their rich and universal…
Confinement-induced collective motion in suspensions of run-and-tumble particles
José MartÃn-Roca, Daniel Escobar Ortiz, Chantal Valeriani +1
Collective motion is ubiquitous in active systems at all length and time scales. The mechanisms behind such collective motion usually are alignment interactions between active part…
Structural and dynamic anomalous properties of TIP4P/2005 water at extreme pressures
José MartÃn-Roca, Alberto Zaragoza, Frédéric Caupin +1
Water shows numerous thermodynamic, dynamic, and structural anomalies. Recent experiments [Eichler et al. Phys. Rev. Lett. 134, 134101 (2025)], based on measurements of shear and b…
MIPS is a Maxwell fluid with an extended and non-monotonic crossover
José MartÃn-Roca, Chantal Valeriani, Kristian Thijssen +2
Understanding the mechanical properties of active suspensions is crucial for their potential applications in materials engineering. Among the various phenomena in active matter tha…
Active Polymer Behavior in Two Dimensions: A Comparative Analysis of Tangential and Push-Pull Models
Giulia Janzen, Juan Pablo Miranda, José MartÃn-Roca +4
In this work, we compare the structural and dynamic behavior of active filaments in two dimensions using tangential and push-pull models, including a variant with passive end monom…