12 papers
Tunable mesoscopic numerical model for bacterial biofilms
J. Martin-Roca, B. Wu-Zhang, J. Oller +2
We present a tunable mesoscale model to provide a basis for future rheological calculations of of bacterial biofilms, explicitly incorporating reversible crosslinking within the ex…
Phase fluctuations in a confined fluid
Frédéric Caupin, Alberto Zaragoza, Miguel A. Gonzalez +1
Fluid phase equilibrium depends on the external constraints imposed on a system. In a closed system with fixed volume, depending on the average density, a vapor bubble may be stabl…
Shear and bulk viscosities of water up to 1.6 GPa and anomaly in the structural relaxation time
Jan Eichler, Johannes Stefanski, José Martin Roca +4
Deep in the Earth's crust, pressure exceeds one thousand times the atmospheric pressure. Water still flows under these conditions, but experiences dramatic changes in structure and…
How Phase Coexistence affects the mechanical properties of heterogeneous 2D suspensions
Raul Molina-Prados Lallena, Jose Martin-Roca, Kristian Thijssen +3
Although numerical simulations of rheological measurements typically focus on homogeneous systems, heterogeneity can profoundly impact material properties. We report on the rheolog…
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…
Effective interactions in active Brownian particles
Clare R. Rees-Zimmerman, C. Miguel Barriuso Gutierrez, Chantal Valeriani +1
We report an approach to obtain effective pair potentials which describe the structure of two-dimensional systems of active Brownian particles. The pair potential is found by an in…