First passage of an active particle in the presence of passive crowders.
Sign Up to like & getrecommendations! Published in 2020 at "Soft matter"
DOI: 10.1039/d0sm00350f
Abstract: We experimentally study the stochastic transport of a self-propelled camphor boat, driven by Marangoni forces, through a crowd of passive paper discs floating on water. We analyze the statistics of the first passage times of… read more here.
Keywords: active particle; passage active; first passage; particle presence ... See more keywords
Spontaneous emergence of motion of an isotropic active particle in a Carreau fluid.
Sign Up to like & getrecommendations! Published in 2024 at "Soft matter"
DOI: 10.1039/d4sm01070a
Abstract: Active particles are self-propelling in nature due to the generation of a fore-aft asymmetry in the concentration of solutes around their surface. Both the surface activity and mobility play an important role in the particle… read more here.
Keywords: active particles; carreau fluid; active particle; particle ... See more keywords
Stochastic dynamics of an active particle escaping from a potential well.
Sign Up to like & getrecommendations! Published in 2020 at "Chaos"
DOI: 10.1063/1.5140853
Abstract: Active matter systems are driven out of equilibrium by the energy directly supplied at the level of constituent active particles that are self-propelled. We consider a model for an active particle in a potential well,… read more here.
Keywords: active particle; stochastic dynamics; potential well; dynamics active ... See more keywords
Reinforcement learning of optimal active particle navigation
Sign Up to like & getrecommendations! Published in 2022 at "New Journal of Physics"
DOI: 10.1088/1367-2630/ac8013
Abstract: The development of self-propelled particles at the micro- and the nanoscale has sparked a huge potential for future applications in active matter physics, microsurgery, and targeted drug delivery. However, while the latter applications provoke the… read more here.
Keywords: reinforcement learning; physics; learning optimal; particle navigation ... See more keywords
A stochastic Stirling engine powered by an active particle
Sign Up to like & getrecommendations! Published in 2025 at "Journal of Statistical Mechanics: Theory and Experiment"
DOI: 10.1088/1742-5468/adff68
Abstract: We investigate a model of a stochastic engine operating cyclically in a viscous fluid at constant temperature, where the working substance consists of an overdamped Brownian particle confined by a harmonic potential, which is elastically… read more here.
Keywords: time; active particle; particle; viscous relaxation ... See more keywords
Forces in inhomogeneous open active-particle systems.
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review E"
DOI: 10.1103/physreve.96.052409
Abstract: We study the force that noninteracting pointlike active particles apply to a symmetric inert object in the presence of a gradient of activity and particle sources and sinks. We consider two simple patterns of sources… read more here.
Keywords: forces inhomogeneous; active particle; open active; inhomogeneous open ... See more keywords
Active Atoms and Interstitials in Two-Dimensional Colloidal Crystals.
Sign Up to like & getrecommendations! Published in 2018 at "Physical review letters"
DOI: 10.1103/physrevlett.120.268004
Abstract: We study experimentally and numerically the motion of a self-phoretic active particle in two-dimensional loosely packed colloidal crystals at fluid interfaces. Two scenarios emerge depending on the interactions between the active particle and the lattice:… read more here.
Keywords: active particle; colloidal crystals; active atoms; two dimensional ... See more keywords
Self-Motility of an Active Particle Induced by Correlations in the Surrounding Solution.
Sign Up to like & getrecommendations! Published in 2020 at "Physical review letters"
DOI: 10.1103/physrevlett.125.268002
Abstract: Current models of phoretic transport rely on molecular forces creating a "diffuse" particle-fluid interface. We investigate theoretically an alternative mechanism, in which a diffuse interface emerges solely due to a nonvanishing correlation length of the… read more here.
Keywords: motility active; active particle; self motility; surrounding solution ... See more keywords
The Hungry Daemon: Does an Energy-Harvesting Active Particle Have to Obey the Second Law of Thermodynamics?
Sign Up to like & getrecommendations! Published in 2025 at "Entropy"
DOI: 10.3390/e27090918
Abstract: Thought experiments like Maxwell’s Demon or the Smoluchowski–Feynman Ratchet can help in pursuing the microscopic origin of the Second Law of Thermodynamics. Here we present a more sophisticated mechanical system than a ratchet, consisting of… read more here.
Keywords: thermodynamics; energy; active particle; energy harvesting ... See more keywords