Efficiency of Brownian Motors

Abstract

The efficiency of different types of Brownian motors is calculated analytically and numerically. We find that motors based on flashing ratchets present a low efficiency and an unavoidable entropy production. On the other hand, a certain class of motors based on adiabatically changing potentials, named reversible ratchets, exhibit a higher efficiency and the entropy production can be arbitrarily reduced.

LaTeX 209, 6 pages, 7 postscript figures, uses psfig

Cited by in corpus (32)

• Brownian motors: noisy transport far from equilibrium
• Equality connecting energy dissipation with violation of fluctuation-response relation
• Feedback control in a collective flashing ratchet
• Brownian motors: current fluctuations and rectification efficiency
• Inattainability of Carnot efficiency in the Brownian heat engine
• Energy dissipation and violation of the fluctuation-response relation in non-equilibrium Langevin systems
• Brownian motion and gambling: from ratchets to paradoxical games
• Information and flux in a feedback controlled Brownian ratchet
• Current and efficiency enhancement in Brownian motors driven by non Gaussian noises
• Run-and-tumble motion in a linear ratchet potential: Analytic solution, power extraction, and first-passage properties
• Symmetries of the ratchet current
• Threshold feedback control for a collective flashing ratchet: threshold dependence
• Thermodynamics of a stochastic twin elevator
• Interaction of molecular motors can enhance their efficiency
• Role of directional fidelity in multiple extreme performance of F1-ATPase motor
• Design principles and optimal performance for molecular motors under realistic constraints
• Ratchet based ion pumps for selective ion separations
• Interacting molecular motors: Efficiency and work fluctuations
• Gaussian white noise as a resource for microscopic engines
• Force generation in small ensembles of Brownian motors
• Kinesin and the Crooks fluctuation theorem
• Higher-order evolutionary dynamics with game transitions
• Reorganization of a 2D disordered granular medium due to a small local cyclic perturbation
• Entropy and efficiency of a molecular motor model
• Stoke's efficiency and its stochastic properties
• Rate in Template-directed Polymer Synthesis
• Phenomenological analysis of ATP dependence of motor protein
• A [3]-catenane non-autonomous molecular motor model: geometric phase, no-pumping theorem, and energy transduction
• Ambipolar Ion Pumping with Ratchet Driven Active Membranes
• A nanoporous capacitive electrochemical ratchet for continuous ion separations
• Motility and Energetics of Randomly Flashing Ratchets
• Paradoxical games and Brownian thermal engines