Journal ArticleDOI
Forced thermal ratchets.
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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
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Tuning water transport through nanochannels by changing the direction of an external electric field
TL;DR: It is found that the direction of the external field plays an important role in the interactions and dipole orientations of water molecules in the nanochannel, accordingly changing the net water flux dramatically, and a critical angle (θC) between the internal electric field and the Nanochannel axis is found.
Journal ArticleDOI
Rocking feedback-controlled ratchets.
TL;DR: It is shown that for both the one-particle ratchet and the collective version of the ratchet an appropriate rocking increases the flux, which gives the maximum flux that has been achieved in a ratchet device without an a priori bias.
Journal ArticleDOI
Phase shift induces currents in a periodic tube.
Bao-quan Ai,Liang-Gang Liu +1 more
TL;DR: The authors find that the phase shift between the tube shape and the potential can break the symmetry of the effective potential and can induce net currents.
Journal ArticleDOI
Optical matter machines: angular momentum conversion by collective modes in optically bound nanoparticle arrays
John Parker,Curtis W. Peterson,Yuval Yifat,Stuart A. Rice,Zijie Yan,Stephen K. Gray,Norbert F. Scherer +6 more
TL;DR: In this paper, the authors demonstrate an optical matter (OM) machine that converts the spin angular momentum of light into orbital angular momentum (OAM) to do mechanical work, based on a sixfold symmetric hexagonally ordered nanoparticle array that operates as an OM gear.
Journal ArticleDOI
Motion in a rocked ratchet with spatially periodic friction
TL;DR: In this paper, a Brownian particle is considered to move in a medium with periodic space dependent friction with the same periodicity as that of the potential but with a phase lag.
References
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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.