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Active engines: Thermodynamics moves forward
Étienne Fodor, Michael E. Cates
The study of thermal heat engines was pivotal to establishing the principles of equilibrium thermodynamics, with implications far wider than only engine optimization. For nonequili…
Collective motion in large deviations of active particles
Yann-Edwin Keta, Étienne Fodor, Frédéric van Wijland +2
We analyse collective motion that occurs during rare (large deviation) events in systems of active particles, both numerically and analytically. We discuss the associated dynamical…
Time-reversal symmetry violations and entropy production in field theories of polar active matter
Øyvind L. Borthne, Étienne Fodor, Michael E. Cates
We investigate the steady-state entropy production rate (EPR) in the Hydrodynamic Vicsek Model (HVM) and Diffusive Flocking Model (DFM). Both models display a transition from an is…
Dissipation controls transport and phase transitions in active fluids: Mobility, diffusion and biased ensembles
Étienne Fodor, Takahiro Nemoto, Suriyanarayanan Vaikuntanathan
Active fluids operate by constantly dissipating energy at the particle level to perform a directed motion, yielding dynamics and phases without any equilibrium equivalent. The emer…
Autonomous engines driven by active matter: Energetics and design principles
Patrick Pietzonka, Étienne Fodor, Christoph Lohrmann +2
Because of its nonequilibrium character, active matter in a steady state can drive engines that autonomously deliver work against a constant mechanical force or torque. As a generi…
Driven probe under harmonic confinement in a colloidal bath
Vincent Démery, Étienne Fodor
Colloids held by optical or magnetic tweezers have been used to explore the local rheological properties of a complex medium and to extract work from fluctuations with some appropr…