Brownian magneto-gyrator as a tunable microengine

Abstract

A Brownian particle performs gyrating motion around a potential energy minimum when subjected to thermal noises from two different heat baths. Here, we propose a magneto-gyrator made of a single charged Brownian particle that is steered by an external magnetic field. Key properties, such as the direction of gyration, the torque exerted by the engine on the confining potential and the maximum power delivered by the microengine can be tuned by varying the strength and direction of the applied magnetic field. Further tunability is obtained by rotating the potential in the plane perpendicular to the direction of the magnetic filed. We show that in this generic scenario, the microengine can be stalled and even reversed by the magnetic field. Finally, we highlight a property of the magneto-gyrator that has no counterpart in the overdamped approximation--the heat loss from the hot to cold bath requires explicit knowledge of the mass of the particle. Consequently, the efficiency of the microengine is mass-dependent even in the overdamped limit.

arXiv comment14 pages, 4 figures

References in corpus (28)

• Entropy production along a stochastic trajectory and an integral fluctuation theorem
• Thermodynamic Bounds on Efficiency for Systems with Broken Time-reversal Symmetry
• A Micrometer-sized Heat Engine Operating Between Bacterial Reservoirs
• On the heat flux and entropy produced by thermal fluctuations
• The Brownian gyrator: a minimal heat engine on the nano-scale
• Anomalous thermodynamics at the micro-scale
• Experimental Realization of a Minimal Microscopic Heat Engine
• Two-temperature Langevin dynamics in a parabolic potential
• Magnetizing a complex plasma without a magnetic field
• Electrical Autonomous Brownian Gyrator
• Microscopic Engine Powered by Critical Demixing
• Bound on Thermoelectric Power in a Magnetic Field within Linear Response
• Magnetoplasmons in rotating dusty plasmas
• Carnot efficiency at divergent power output
• Brownian motion of a circle swimmer in a harmonic trap
• Emergence of Nonwhite Noise in Langevin Dynamics with Magnetic Lorentz Force
• Overdamped stochastic thermodynamics with multiple reservoirs
• Self-diffusion in two-dimensional quasi-magnetized rotating dusty plasmas
• Two-temperature Brownian dynamics of a particle in a confining potential
• Asymmetry relations and effective temperatures for biased Brownian gyrators
• Experimental metrics for detection of detailed balance violation
• Thermal ratchet effect in confining geometries
• Entropic anomaly and maximal efficiency of microscopic heat engines
• Attainability of Carnot Efficiency with Autonomous Engines
• Nondiffusive Fluxes in Brownian System with Lorentz Force
• Dynamics of Magnus Dominated Particle Clusters, Collisions, Pinning and Ratchets
• Autonomous Brownian gyrators: a study on gyrating characteristics
• The role of non-conservative scattering forces and damping on Brownian particles in optical traps