Journal ArticleDOI
Forced thermal ratchets.
Reads0
Chats0
TLDR
In this paper, the authors considered a Brownian particle in a periodic potential under heavy damping and showed that if the particle is subject to an external force having time correlations, detailed balance is lost and the particle can exhibit a nonzero net drift speed.Abstract:
We consider a Brownian particle in a periodic potential under heavy damping. The second law forbids it from displaying any net drift speed, even if the symmetry of the potential is broken. But if the particle is subject to an external force having time correlations, detailed balance is lost and the particle can exhibit a nonzero net drift speed. Thus, broken symmetry and time correlations are sufficient ingredients for transport.read more
Citations
More filters
Dissertation
Dynamique des atomes dans un réseau optique dissipatif : modes de propagation, résonance stochastique, diffusion dirigée
TL;DR: In this article, the authors report l'observation directe des modes de propagation Brillouin par imagerie and nous etudions le lien avec the resonance optique that l'on observe dans les spectres pompe-sonde.
Journal ArticleDOI
Can a Correlation Ratchet Operate Under Spatial Symmetry and Temporal Symmetry
Ya Jia,Jia-rong Li +1 more
TL;DR: In this paper, the simplest imaginable ratchet system which cantains two noises correlated with each other is discussed, and it is found that the correlation between noises can induce transport, even when the ratchet potential is completely symmetric in space and the driving forcing is symmetric, and the system can exhibit a current in either direction.
Journal ArticleDOI
Dissipative solitons, wave asymmetry and dynamical ratchets
TL;DR: In this paper, the role of both viscous friction and temperature in both the direction of transport and its quantitative features was assessed using a (mesoscopic) probabilistic description.
Book ChapterDOI
A motor protein model and how it relates to stochastic resonance, feynman’s ratchet, and maxwell’s demon
TL;DR: In this article, the energy input is used to ratchet Brownian motion, i.e., allowing it in one direction and blocking it in the opposite direction, which relates to famous paradoxes like Feynman's Ratchet and Maxwell's Demon, but is thermodynamically consistent.
Journal ArticleDOI
The thermodynamic cycle of an entropy-driven stepper motor walking hand-over-hand
TL;DR: In this article, an entropy-driven spring between the two heads of the stepper was used to simulate the motion of the two legs in a ratchet potential, and a Langevin equation was analyzed by performing numerical simulations.
References
More filters
Book
Stochastic processes in physics and chemistry
TL;DR: In this article, the authors introduce the Fokker-planck equation, the Langevin approach, and the diffusion type of the master equation, as well as the statistics of jump events.
Stochastic Processes in Physics and Chemistry
Abstract: Preface to the first edition. Preface to the second edition. Abbreviated references. I. Stochastic variables. II. Random events. III. Stochastic processes. IV. Markov processes. V. The master equation. VI. One-step processes. VII. Chemical reactions. VIII. The Fokker-Planck equation. IX. The Langevin approach. X. The expansion of the master equation. XI. The diffusion type. XII. First-passage problems. XIII. Unstable systems. XIV. Fluctuations in continuous systems. XV. The statistics of jump events. XVI. Stochastic differential equations. XVII. Stochastic behavior of quantum systems.
Book
Molecular Cell Biology
TL;DR: Molecular cell biology, Molecular cell biology , مرکز فناوری اطلاعات و اصاع رسانی, کδاوρزی
Book
The Fokker-Planck Equation: Methods of Solution and Applications
TL;DR: In this paper, the Fokker-Planck Equation for N Variables (FPE) was extended to N = 1 variable and N = 2 variables, where N is the number of variables in the system.